HEADER    OXIDOREDUCTASE                          08-AUG-02   1MEI              
TITLE     INOSINE MONOPHOSPHATE DEHYDROGENASE (IMPDH) FROM TRITRICHOMONAS FOETUS
TITLE    2 WITH XMP AND MYCOPHENOLIC ACID BOUND                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE;                    
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: IMP DEHYDROGENASE, IMPDH;                                   
COMPND   5 EC: 1.1.1.205;                                                       
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: TRITRICHOMONAS FOETUS;                          
SOURCE   3 ORGANISM_TAXID: 5724;                                                
SOURCE   4 GENE: IMPDH;                                                         
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: H712;                                      
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PBACE                                     
KEYWDS    ALPHA BETA BARREL, OXIDOREDUCTASE                                     
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    G.L.PROSISE,H.LUECKE                                                  
REVDAT   3   13-NOV-24 1MEI    1       REMARK LINK   ATOM                       
REVDAT   2   24-FEB-09 1MEI    1       VERSN                                    
REVDAT   1   12-AUG-03 1MEI    0                                                
JRNL        AUTH   G.L.PROSISE,H.LUECKE                                         
JRNL        TITL   CRYSTAL STRUCTURES OF TRITRICHOMONAS FOETUS INOSINE          
JRNL        TITL 2 MONOPHOSPHATE DEHYDROGENASE IN COMPLEX WITH SUBSTRATE,       
JRNL        TITL 3 COFACTOR AND ANALOGS: A STRUCTURAL BASIS FOR THE RANDOM-IN   
JRNL        TITL 4 ORDERED-OUT KINETIC MECHANISM                                
JRNL        REF    J.MOL.BIOL.                   V. 326   517 2003              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   12559919                                                     
JRNL        DOI    10.1016/S0022-2836(02)01383-9                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 33.06                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 3510188.210                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 32648                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.227                           
REMARK   3   FREE R VALUE                     : 0.257                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.200                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1709                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.006                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.20                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.34                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 96.60                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 4936                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2710                       
REMARK   3   BIN FREE R VALUE                    : 0.2930                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 259                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.018                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2690                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 48                                      
REMARK   3   SOLVENT ATOMS            : 180                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 27.40                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 37.30                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.00000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.00000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.27                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.23                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.32                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.28                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.006                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.200                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 22.50                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.680                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 1.230 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.190 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 1.610 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 2.520 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.34                                                 
REMARK   3   BSOL        : 35.45                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : PARAM.GNSOL                                    
REMARK   3  PARAMETER FILE  3  : CIS_PEPTIDE.PARAM                              
REMARK   3  PARAMETER FILE  4  : MPA.PAR                                        
REMARK   3  PARAMETER FILE  5  : XMP.PAR                                        
REMARK   3  PARAMETER FILE  6  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : XMP.TOP                                        
REMARK   3  TOPOLOGY FILE  3   : MPA.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : K.TOP                                          
REMARK   3  TOPOLOGY FILE  5   : TOPH.GNSOL                                     
REMARK   3  TOPOLOGY FILE  6   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1MEI COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-AUG-02.                  
REMARK 100 THE DEPOSITION ID IS D_1000016853.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 11-APR-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL9-1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.97                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 32815                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 99.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.5                               
REMARK 200  DATA REDUNDANCY                : 4.700                              
REMARK 200  R MERGE                    (I) : 0.06600                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 21.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.24                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 98.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.50000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.900                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS            
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: PDB ENTRY 1AK5                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 56.02                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.80                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: SODIUM MALONATE, TRIS, 2                 
REMARK 280  -MERCAPTOETHANOL, EDTA, GLYCEROL, PH 7.5, VAPOR DIFFUSION,          
REMARK 280  SITTING DROP, TEMPERATURE 293K                                      
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 4 3 2                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -X,Y,-Z                                                 
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   Z,X,Y                                                   
REMARK 290       6555   Z,-X,-Y                                                 
REMARK 290       7555   -Z,-X,Y                                                 
REMARK 290       8555   -Z,X,-Y                                                 
REMARK 290       9555   Y,Z,X                                                   
REMARK 290      10555   -Y,Z,-X                                                 
REMARK 290      11555   Y,-Z,-X                                                 
REMARK 290      12555   -Y,-Z,X                                                 
REMARK 290      13555   Y,X,-Z                                                  
REMARK 290      14555   -Y,-X,-Z                                                
REMARK 290      15555   Y,-X,Z                                                  
REMARK 290      16555   -Y,X,Z                                                  
REMARK 290      17555   X,Z,-Y                                                  
REMARK 290      18555   -X,Z,Y                                                  
REMARK 290      19555   -X,-Z,-Y                                                
REMARK 290      20555   X,-Z,Y                                                  
REMARK 290      21555   Z,Y,-X                                                  
REMARK 290      22555   Z,-Y,X                                                  
REMARK 290      23555   -Z,Y,X                                                  
REMARK 290      24555   -Z,-Y,-X                                                
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY2   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY1   6  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY2   6 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY1   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY2   7 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY2   8  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY1   9  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   9  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY3   9  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY1  10  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  10  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY3  10 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY1  11  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  11  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY3  11 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY1  12  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  12  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY3  12  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY1  13  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  13  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  13  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1  14  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  14 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  14  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1  15  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  15 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  15  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1  16  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  16  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  16  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1  17  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  17  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY3  17  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY1  18 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  18  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY3  18  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY1  19 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  19  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY3  19  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY1  20  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  20  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY3  20  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY1  21  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY2  21  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  21 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY1  22  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY2  22  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  22  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY1  23  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY2  23  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  23  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY1  24  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY2  24  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  24 -1.000000  0.000000  0.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -1.000000  0.000000  0.000000      155.07000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000      155.07000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   3 -1.000000  0.000000  0.000000      155.07000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4  0.000000 -1.000000  0.000000      155.07000            
REMARK 350   BIOMT2   4  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   4  0.000000  0.000000  1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A1031  LIES ON A SPECIAL POSITION.                          
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     GLY A   102                                                      
REMARK 465     PHE A   103                                                      
REMARK 465     VAL A   104                                                      
REMARK 465     VAL A   105                                                      
REMARK 465     SER A   106                                                      
REMARK 465     ASP A   107                                                      
REMARK 465     SER A   108                                                      
REMARK 465     ASN A   109                                                      
REMARK 465     VAL A   110                                                      
REMARK 465     LYS A   111                                                      
REMARK 465     PRO A   112                                                      
REMARK 465     ASP A   113                                                      
REMARK 465     GLN A   114                                                      
REMARK 465     THR A   115                                                      
REMARK 465     PHE A   116                                                      
REMARK 465     ALA A   117                                                      
REMARK 465     ASP A   118                                                      
REMARK 465     VAL A   119                                                      
REMARK 465     LEU A   120                                                      
REMARK 465     ALA A   121                                                      
REMARK 465     ILE A   122                                                      
REMARK 465     SER A   123                                                      
REMARK 465     GLN A   124                                                      
REMARK 465     ARG A   125                                                      
REMARK 465     THR A   126                                                      
REMARK 465     THR A   127                                                      
REMARK 465     HIS A   128                                                      
REMARK 465     ASN A   129                                                      
REMARK 465     THR A   130                                                      
REMARK 465     VAL A   131                                                      
REMARK 465     ALA A   132                                                      
REMARK 465     VAL A   133                                                      
REMARK 465     THR A   134                                                      
REMARK 465     ASP A   135                                                      
REMARK 465     ASP A   136                                                      
REMARK 465     GLY A   137                                                      
REMARK 465     THR A   138                                                      
REMARK 465     PRO A   139                                                      
REMARK 465     HIS A   140                                                      
REMARK 465     GLY A   141                                                      
REMARK 465     VAL A   142                                                      
REMARK 465     LEU A   143                                                      
REMARK 465     LEU A   144                                                      
REMARK 465     GLY A   145                                                      
REMARK 465     LEU A   146                                                      
REMARK 465     VAL A   147                                                      
REMARK 465     THR A   148                                                      
REMARK 465     GLN A   149                                                      
REMARK 465     ARG A   150                                                      
REMARK 465     ASP A   151                                                      
REMARK 465     TYR A   152                                                      
REMARK 465     PRO A   153                                                      
REMARK 465     ILE A   154                                                      
REMARK 465     ASP A   155                                                      
REMARK 465     LEU A   156                                                      
REMARK 465     THR A   157                                                      
REMARK 465     GLN A   158                                                      
REMARK 465     THR A   159                                                      
REMARK 465     GLU A   160                                                      
REMARK 465     THR A   161                                                      
REMARK 465     LYS A   162                                                      
REMARK 465     VAL A   163                                                      
REMARK 465     SER A   164                                                      
REMARK 465     ASP A   165                                                      
REMARK 465     MET A   166                                                      
REMARK 465     MET A   167                                                      
REMARK 465     THR A   168                                                      
REMARK 465     PRO A   169                                                      
REMARK 465     PHE A   170                                                      
REMARK 465     SER A   171                                                      
REMARK 465     LYS A   172                                                      
REMARK 465     LEU A   173                                                      
REMARK 465     VAL A   174                                                      
REMARK 465     THR A   175                                                      
REMARK 465     ALA A   176                                                      
REMARK 465     HIS A   177                                                      
REMARK 465     GLN A   178                                                      
REMARK 465     ASP A   179                                                      
REMARK 465     THR A   180                                                      
REMARK 465     LYS A   181                                                      
REMARK 465     LEU A   182                                                      
REMARK 465     SER A   183                                                      
REMARK 465     GLU A   184                                                      
REMARK 465     ALA A   185                                                      
REMARK 465     ASN A   186                                                      
REMARK 465     LYS A   187                                                      
REMARK 465     ILE A   188                                                      
REMARK 465     ILE A   189                                                      
REMARK 465     TRP A   190                                                      
REMARK 465     GLU A   191                                                      
REMARK 465     LYS A   192                                                      
REMARK 465     LYS A   193                                                      
REMARK 465     LEU A   194                                                      
REMARK 465     ASN A   195                                                      
REMARK 465     ALA A   196                                                      
REMARK 465     LEU A   197                                                      
REMARK 465     PRO A   198                                                      
REMARK 465     ILE A   199                                                      
REMARK 465     ILE A   200                                                      
REMARK 465     ASP A   201                                                      
REMARK 465     ASP A   202                                                      
REMARK 465     ASP A   203                                                      
REMARK 465     GLN A   204                                                      
REMARK 465     HIS A   205                                                      
REMARK 465     LEU A   206                                                      
REMARK 465     ARG A   207                                                      
REMARK 465     TYR A   208                                                      
REMARK 465     ILE A   209                                                      
REMARK 465     VAL A   210                                                      
REMARK 465     PHE A   211                                                      
REMARK 465     ARG A   212                                                      
REMARK 465     LYS A   213                                                      
REMARK 465     ASP A   214                                                      
REMARK 465     TYR A   215                                                      
REMARK 465     ASP A   216                                                      
REMARK 465     ARG A   217                                                      
REMARK 465     SER A   218                                                      
REMARK 465     GLN A   219                                                      
REMARK 465     VAL A   220                                                      
REMARK 465     CYS A   221                                                      
REMARK 465     GLN A   417                                                      
REMARK 465     ARG A   418                                                      
REMARK 465     TYR A   419                                                      
REMARK 465     ASP A   420                                                      
REMARK 465     LEU A   421                                                      
REMARK 465     GLY A   422                                                      
REMARK 465     GLY A   423                                                      
REMARK 465     LYS A   424                                                      
REMARK 465     GLN A   425                                                      
REMARK 465     LYS A   426                                                      
REMARK 465     LEU A   427                                                      
REMARK 465     VAL A   484                                                      
REMARK 465     GLU A   485                                                      
REMARK 465     GLY A   486                                                      
REMARK 465     GLY A   487                                                      
REMARK 465     ALA A   488                                                      
REMARK 465     HIS A   489                                                      
REMARK 465     ASP A   490                                                      
REMARK 465     VAL A   491                                                      
REMARK 465     ILE A   492                                                      
REMARK 465     VAL A   493                                                      
REMARK 465     LYS A   494                                                      
REMARK 465     ASP A   495                                                      
REMARK 465     ARG A   496                                                      
REMARK 465     ILE A   497                                                      
REMARK 465     ASN A   498                                                      
REMARK 465     ASP A   499                                                      
REMARK 465     TYR A   500                                                      
REMARK 465     HIS A   501                                                      
REMARK 465     PRO A   502                                                      
REMARK 465     LYS A   503                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    PRO A  53       34.85    -75.12                                   
REMARK 500    VAL A  62      -63.07   -129.28                                   
REMARK 500    ARG A 241      -60.82   -107.38                                   
REMARK 500    ILE A 318       33.58    -84.74                                   
REMARK 500    ILE A 320       55.17   -115.64                                   
REMARK 500    GLN A 324     -106.74   -152.50                                   
REMARK 500    ARG A 329      144.06   -170.16                                   
REMARK 500    GLU A 430      125.71   -174.55                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K A 900   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLY A  20   O                                                      
REMARK 620 2 SER A  22   OG  115.0                                              
REMARK 620 3 SER A  22   N    68.5  56.7                                        
REMARK 620 4 ASP A 264   OD2 155.0  85.6 136.5                                  
REMARK 620 5 ASP A 264   OD1 119.1 125.2 141.2  45.8                            
REMARK 620 6 PHE A 266   O    81.7  95.0  57.5 111.9  84.9                      
REMARK 620 7 ASN A 460   O    78.2  85.0 105.6  90.3 113.2 157.7                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 900                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE XMP A 602                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MOA A 600                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1AK5   RELATED DB: PDB                                   
REMARK 900 INOSINE MONOPHOSPHATE DEHYDROGENASE (IMPDH) FROM TRITRICHOMONAS      
REMARK 900 FOETUS                                                               
REMARK 900 RELATED ID: 1ME7   RELATED DB: PDB                                   
REMARK 900 1ME7 CONTAINS THE SAME PROTEIN WITH RVP AND MOA BOUND                
REMARK 900 RELATED ID: 1ME8   RELATED DB: PDB                                   
REMARK 900 1ME8 CONTAINS THE SAME PROTEIN WITH RVP BOUND                        
REMARK 900 RELATED ID: 1ME9   RELATED DB: PDB                                   
REMARK 900 1ME9 CONTAINS THE SAME PROTEIN WITH IMP BOUND                        
REMARK 900 RELATED ID: 1MEH   RELATED DB: PDB                                   
REMARK 900 1MEH CONTAINS THE SAME PROTEIN WITH IMP AND MOA BOUND                
REMARK 900 RELATED ID: 1MEW   RELATED DB: PDB                                   
REMARK 900 1MEW CONTAINS THE SAME PROTEIN WITH XMP AND NAD BOUND                
DBREF  1MEI A    1   503  UNP    P50097   IMDH_TRIFO       1    503             
SEQRES   1 A  503  MET ALA LYS TYR TYR ASN GLU PRO CYS HIS THR PHE ASN          
SEQRES   2 A  503  GLU TYR LEU LEU ILE PRO GLY LEU SER THR VAL ASP CYS          
SEQRES   3 A  503  ILE PRO SER ASN VAL ASN LEU SER THR PRO LEU VAL LYS          
SEQRES   4 A  503  PHE GLN LYS GLY GLN GLN SER GLU ILE ASN LEU LYS ILE          
SEQRES   5 A  503  PRO LEU VAL SER ALA ILE MET GLN SER VAL SER GLY GLU          
SEQRES   6 A  503  LYS MET ALA ILE ALA LEU ALA ARG GLU GLY GLY ILE SER          
SEQRES   7 A  503  PHE ILE PHE GLY SER GLN SER ILE GLU SER GLN ALA ALA          
SEQRES   8 A  503  MET VAL HIS ALA VAL LYS ASN PHE LYS ALA GLY PHE VAL          
SEQRES   9 A  503  VAL SER ASP SER ASN VAL LYS PRO ASP GLN THR PHE ALA          
SEQRES  10 A  503  ASP VAL LEU ALA ILE SER GLN ARG THR THR HIS ASN THR          
SEQRES  11 A  503  VAL ALA VAL THR ASP ASP GLY THR PRO HIS GLY VAL LEU          
SEQRES  12 A  503  LEU GLY LEU VAL THR GLN ARG ASP TYR PRO ILE ASP LEU          
SEQRES  13 A  503  THR GLN THR GLU THR LYS VAL SER ASP MET MET THR PRO          
SEQRES  14 A  503  PHE SER LYS LEU VAL THR ALA HIS GLN ASP THR LYS LEU          
SEQRES  15 A  503  SER GLU ALA ASN LYS ILE ILE TRP GLU LYS LYS LEU ASN          
SEQRES  16 A  503  ALA LEU PRO ILE ILE ASP ASP ASP GLN HIS LEU ARG TYR          
SEQRES  17 A  503  ILE VAL PHE ARG LYS ASP TYR ASP ARG SER GLN VAL CYS          
SEQRES  18 A  503  HIS ASN GLU LEU VAL ASP SER GLN LYS ARG TYR LEU VAL          
SEQRES  19 A  503  GLY ALA GLY ILE ASN THR ARG ASP PHE ARG GLU ARG VAL          
SEQRES  20 A  503  PRO ALA LEU VAL GLU ALA GLY ALA ASP VAL LEU CYS ILE          
SEQRES  21 A  503  ASP SER SER ASP GLY PHE SER GLU TRP GLN LYS ILE THR          
SEQRES  22 A  503  ILE GLY TRP ILE ARG GLU LYS TYR GLY ASP LYS VAL LYS          
SEQRES  23 A  503  VAL GLY ALA GLY ASN ILE VAL ASP GLY GLU GLY PHE ARG          
SEQRES  24 A  503  TYR LEU ALA ASP ALA GLY ALA ASP PHE ILE LYS ILE GLY          
SEQRES  25 A  503  ILE GLY GLY GLY SER ILE CYS ILE THR ARG GLU GLN LYS          
SEQRES  26 A  503  GLY ILE GLY ARG GLY GLN ALA THR ALA VAL ILE ASP VAL          
SEQRES  27 A  503  VAL ALA GLU ARG ASN LYS TYR PHE GLU GLU THR GLY ILE          
SEQRES  28 A  503  TYR ILE PRO VAL CYS SER ASP GLY GLY ILE VAL TYR ASP          
SEQRES  29 A  503  TYR HIS MET THR LEU ALA LEU ALA MET GLY ALA ASP PHE          
SEQRES  30 A  503  ILE MET LEU GLY ARG TYR PHE ALA ARG PHE GLU GLU SER          
SEQRES  31 A  503  PRO THR ARG LYS VAL THR ILE ASN GLY SER VAL MET LYS          
SEQRES  32 A  503  GLU TYR TRP GLY GLU GLY SER SER ARG ALA ARG ASN TRP          
SEQRES  33 A  503  GLN ARG TYR ASP LEU GLY GLY LYS GLN LYS LEU SER PHE          
SEQRES  34 A  503  GLU GLU GLY VAL ASP SER TYR VAL PRO TYR ALA GLY LYS          
SEQRES  35 A  503  LEU LYS ASP ASN VAL GLU ALA SER LEU ASN LYS VAL LYS          
SEQRES  36 A  503  SER THR MET CYS ASN CYS GLY ALA LEU THR ILE PRO GLN          
SEQRES  37 A  503  LEU GLN SER LYS ALA LYS ILE THR LEU VAL SER SER VAL          
SEQRES  38 A  503  SER ILE VAL GLU GLY GLY ALA HIS ASP VAL ILE VAL LYS          
SEQRES  39 A  503  ASP ARG ILE ASN ASP TYR HIS PRO LYS                          
HET      K  A 900       1                                                       
HET    XMP  A 602      24                                                       
HET    MOA  A 600      23                                                       
HETNAM       K POTASSIUM ION                                                    
HETNAM     XMP XANTHOSINE-5'-MONOPHOSPHATE                                      
HETNAM     MOA MYCOPHENOLIC ACID                                                
HETSYN     XMP 5-MONOPHOSPHATE-9-BETA-D-RIBOFURANOSYL XANTHINE                  
HETSYN     MOA 6-(1,3-DIHYDRO-7-HYDROXY-5-METHOXY-4-METHYL-1-                   
HETSYN   2 MOA  OXOISOBENZOFURAN-6-YL)-4-METHYL-4-HEXANOIC ACID                 
FORMUL   2    K    K 1+                                                         
FORMUL   3  XMP    C10 H14 N4 O9 P 1+                                           
FORMUL   4  MOA    C17 H20 O6                                                   
FORMUL   5  HOH   *180(H2 O)                                                    
HELIX    1   1 THR A   11  ASN A   13  5                                   3    
HELIX    2   2 ILE A   27  VAL A   31  5                                   5    
HELIX    3   3 GLY A   64  GLU A   74  1                                  11    
HELIX    4   4 SER A   85  ASN A   98  1                                  14    
HELIX    5   5 ASP A  242  GLY A  254  1                                  13    
HELIX    6   6 SER A  267  GLY A  282  1                                  16    
HELIX    7   7 ASP A  283  VAL A  285  5                                   3    
HELIX    8   8 ASP A  294  GLY A  305  1                                  12    
HELIX    9   9 GLY A  330  GLY A  350  1                                  21    
HELIX   10  10 TYR A  363  MET A  373  1                                  11    
HELIX   11  11 GLY A  381  ARG A  386  1                                   6    
HELIX   12  12 SER A  410  ASN A  415  1                                   6    
HELIX   13  13 LYS A  442  CYS A  461  1                                  20    
HELIX   14  14 THR A  465  ALA A  473  1                                   9    
SHEET    1   A 2 TYR A  15  ILE A  18  0                                        
SHEET    2   A 2 LYS A 474  LEU A 477 -1  O  LYS A 474   N  ILE A  18           
SHEET    1   B 2 THR A  35  PRO A  36  0                                        
SHEET    2   B 2 ASN A  49  LEU A  50 -1  O  LEU A  50   N  THR A  35           
SHEET    1   C 2 PHE A  40  GLN A  41  0                                        
SHEET    2   C 2 ILE A 351  TYR A 352 -1  O  TYR A 352   N  PHE A  40           
SHEET    1   D 9 LEU A  54  SER A  56  0                                        
SHEET    2   D 9 ILE A  77  ILE A  80  1  O  ILE A  77   N  SER A  56           
SHEET    3   D 9 GLY A 235  ILE A 238  1  O  GLY A 237   N  ILE A  80           
SHEET    4   D 9 VAL A 257  ILE A 260  1  O  CYS A 259   N  ILE A 238           
SHEET    5   D 9 VAL A 287  ILE A 292  1  O  GLY A 288   N  LEU A 258           
SHEET    6   D 9 PHE A 308  ILE A 311  1  O  LYS A 310   N  ALA A 289           
SHEET    7   D 9 VAL A 355  ASP A 358  1  O  CYS A 356   N  ILE A 311           
SHEET    8   D 9 PHE A 377  LEU A 380  1  O  PHE A 377   N  SER A 357           
SHEET    9   D 9 LEU A  54  SER A  56  1  N  VAL A  55   O  ILE A 378           
SHEET    1   E 3 LYS A 394  ILE A 397  0                                        
SHEET    2   E 3 SER A 400  TRP A 406 -1  O  MET A 402   N  VAL A 395           
SHEET    3   E 3 ASP A 434  PRO A 438 -1  O  SER A 435   N  TYR A 405           
SSBOND   1 CYS A   26    CYS A  459                          1555   1555  2.03  
LINK         O   GLY A  20                 K     K A 900     1555   1555  2.12  
LINK         OG  SER A  22                 K     K A 900     1555   1555  2.41  
LINK         N   SER A  22                 K     K A 900     1555   1555  3.38  
LINK         OD2 ASP A 264                 K     K A 900    16655   1555  2.48  
LINK         OD1 ASP A 264                 K     K A 900    16655   1555  3.01  
LINK         O   PHE A 266                 K     K A 900    16655   1555  2.65  
LINK         O   ASN A 460                 K     K A 900     1555   1555  2.81  
CISPEP   1 GLY A  290    ASN A  291          0         0.82                     
SITE     1 AC1  5 GLY A  20  SER A  22  ASP A 264  PHE A 266                    
SITE     2 AC1  5 ASN A 460                                                     
SITE     1 AC2 20 ALA A  57  GLY A 316  SER A 317  ILE A 318                    
SITE     2 AC2 20 CYS A 319  ASP A 358  MET A 379  GLY A 381                    
SITE     3 AC2 20 ARG A 382  TYR A 405  GLY A 407  GLU A 408                    
SITE     4 AC2 20 GLY A 409  GLU A 431  GLY A 432  MOA A 600                    
SITE     5 AC2 20 HOH A 913  HOH A 937  HOH A 947  HOH A1059                    
SITE     1 AC3 12 ASP A 261  SER A 262  SER A 263  ASN A 291                    
SITE     2 AC3 12 GLY A 312  ILE A 313  GLY A 314  GLU A 408                    
SITE     3 AC3 12 GLY A 409  ARG A 414  XMP A 602  HOH A 932                    
CRYST1  155.070  155.070  155.070  90.00  90.00  90.00 P 4 3 2      24          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.006449  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006449  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.006449        0.00000