HEADER    STRUCTURAL GENOMICS, UNKNOWN FUNCTION   26-SEP-01   1K26              
TITLE     STRUCTURE OF A NUDIX PROTEIN FROM PYROBACULUM AEROPHILUM SOLVED BY THE
TITLE    2 SINGLE WAVELENGTH ANOMOLOUS SCATTERING METHOD                        
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: NUDIX HOMOLOG;                                             
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PYROBACULUM AEROPHILUM;                         
SOURCE   3 ORGANISM_TAXID: 13773;                                               
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   7 EXPRESSION_SYSTEM_VECTOR_TYPE: PET-22B(+);                           
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PET-22B_MUTT                              
KEYWDS    NUDIX/MUTT-LIKE FOLD, MIXED ALPHA/BETA, DIMER, PUTATIVE NUDIX         
KEYWDS   2 HYDROLASE, STRUCTURAL GENOMICS, UNKNOWN FUNCTION                     
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    S.WANG,C.MURA,M.R.SAWAYA,D.CASCIO,D.EISENBERG                         
REVDAT   4   07-FEB-24 1K26    1       REMARK LINK                              
REVDAT   3   13-JUL-11 1K26    1       VERSN                                    
REVDAT   2   24-FEB-09 1K26    1       VERSN                                    
REVDAT   1   03-APR-02 1K26    0                                                
JRNL        AUTH   S.WANG,C.MURA,M.R.SAWAYA,D.CASCIO,D.EISENBERG                
JRNL        TITL   STRUCTURE OF A NUDIX PROTEIN FROM PYROBACULUM AEROPHILUM     
JRNL        TITL 2 REVEALS A DIMER WITH TWO INTERSUBUNIT BETA-SHEETS.           
JRNL        REF    ACTA CRYSTALLOGR.,SECT.D      V.  58   571 2002              
JRNL        REFN                   ISSN 0907-4449                               
JRNL        PMID   11914479                                                     
JRNL        DOI    10.1107/S0907444902001191                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.85 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.0                                              
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) : 1.85                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 19.85                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 150296.420                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 89.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 25333                          
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) : 0.183                           
REMARK   3   FREE R VALUE                     : 0.219                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 7.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1992                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.005                           
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) : 1.85                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.97                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 58.20                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 2470                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2460                       
REMARK   3   BIN FREE R VALUE                    : 0.2870                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 8.70                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 235                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.019                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2372                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 54                                      
REMARK   3   SOLVENT ATOMS            : 149                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 16.20                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 27.50                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -4.85000                                             
REMARK   3    B22 (A**2) : -0.21000                                             
REMARK   3    B33 (A**2) : 5.06000                                              
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) : 0.19                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.16                            
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) : 0.23                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.21                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.015                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.700                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 24.40                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.140                           
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) : 2.920 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 3.680 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 4.670 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 6.490 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.45                                                 
REMARK   3   BSOL        : 61.29                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : RESTRAINT                                               
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  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  4  : CRY_XPLOR_PAR.TXT                              
REMARK   3  PARAMETER FILE  5  : ACY_XPLOR_PAR.TXT                              
REMARK   3  PARAMETER FILE  6  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER_REP.TOP                                  
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : CRY_XPLOR_TOP.TXT                              
REMARK   3  TOPOLOGY FILE  5   : ACY_XPLOR_TOP.TXT                              
REMARK   3  TOPOLOGY FILE  6   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1K26 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 27-SEP-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000014466.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 16-SEP-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 110                                
REMARK 200  PH                             : 4.8                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X8C                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.1053                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 25455                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.850                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 100.000                            
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 89.3                               
REMARK 200  DATA REDUNDANCY                : 13.70                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.07600                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 18.9000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.85                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.92                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 52.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.25                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.47000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.150                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SAD                          
REMARK 200 SOFTWARE USED: MLPHARE                                               
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 45.57                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.26                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 4000, AMMONIUM SULFATE, SODIUM       
REMARK 280  ACETATE, ISOPROPANOL, PH 4.8, VAPOR DIFFUSION, HANGING DROP,        
REMARK 280  TEMPERATURE 293K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
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       26.21200            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       42.88100            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       35.82750            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       42.88100            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       26.21200            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       35.82750            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A DIMER AS IN THE ASYMMETRIC      
REMARK 300 UNIT.                                                                
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: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 5090 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 14780 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -96.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
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 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     HIS A   151                                                      
REMARK 465     HIS A   152                                                      
REMARK 465     HIS A   153                                                      
REMARK 465     HIS A   154                                                      
REMARK 465     HIS A   155                                                      
REMARK 465     HIS A   156                                                      
REMARK 465     ALA B   148                                                      
REMARK 465     LEU B   149                                                      
REMARK 465     GLU B   150                                                      
REMARK 465     HIS B   151                                                      
REMARK 465     HIS B   152                                                      
REMARK 465     HIS B   153                                                      
REMARK 465     HIS B   154                                                      
REMARK 465     HIS B   155                                                      
REMARK 465     HIS B   156                                                      
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    LEU A 149       48.36    -77.54                                   
REMARK 500    ASN B 124       -0.17     76.02                                   
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                             IR3 A 206  IR                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 LYS A  20   NZ                                                     
REMARK 620 2 HIS A  31   NE2 138.4                                              
REMARK 620 3 GOL A 211   O3   99.1 122.0                                        
REMARK 620 4 HOH A 256   O   149.3  67.6  55.3                                  
REMARK 620 5 HOH A 288   O   102.9  74.2 105.4 100.7                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             IR3 A 205  IR                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  66   OE1                                                    
REMARK 620 2 HOH A 229   O    91.3                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             IR3 A 203  IR                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A 257   O                                                      
REMARK 620 2 HOH A 267   O    87.7                                              
REMARK 620 3 HOH A 270   O    92.9  97.0                                        
REMARK 620 4 HOH A 301   O    86.6 173.5  86.3                                  
REMARK 620 5 HOH A 308   O   177.9  90.8  85.7  95.0                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             IR3 B 204  IR                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A 287   O                                                      
REMARK 620 2 LYS B  18   NZ  114.0                                              
REMARK 620 3 ASP B  65   OD2 117.9 128.1                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              NI B 208  NI                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH B 267   O                                                      
REMARK 620 2 HOH B 268   O   131.2                                              
REMARK 620 N                    1                                               
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 201                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 202                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IR3 A 203                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IR3 B 204                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IR3 A 205                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IR3 A 206                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI A 207                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI B 208                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC9                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 209                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 210                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 211                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACY A 212                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACY B 213                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACY A 214                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACY B 215                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACY B 216                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1JRK   RELATED DB: PDB                                   
REMARK 900 1JRK CONTAINS THE SAME PROTEIN CRYSTALLIZED AS A TETRAMER (DIMER OF  
REMARK 900 DIMERS) IN THE ASYMMETRIC UNIT.                                      
REMARK 900 RELATED ID: 1K2E   RELATED DB: PDB                                   
REMARK 900 1K2E CONTAINS THE SAME PROTEIN AT 1.8A, SOLVED BY MOLECULAR          
REMARK 900 REPLACEMENT.                                                         
DBREF  1K26 A    2   142  UNP    Q8ZTD8   Q8ZTD8_PYRAE     6    146             
DBREF  1K26 B    2   142  UNP    Q8ZTD8   Q8ZTD8_PYRAE     6    146             
SEQRES   1 A  156  MET ILE VAL THR SER GLY VAL LEU VAL GLU ASN GLY LYS          
SEQRES   2 A  156  VAL LEU LEU VAL LYS HIS LYS ARG LEU GLY VAL TYR ILE          
SEQRES   3 A  156  TYR PRO GLY GLY HIS VAL GLU HIS ASN GLU THR PRO ILE          
SEQRES   4 A  156  GLU ALA VAL LYS ARG GLU PHE GLU GLU GLU THR GLY ILE          
SEQRES   5 A  156  VAL VAL GLU PRO ILE GLY PHE THR TYR GLY ILE ILE ASP          
SEQRES   6 A  156  GLU ASN ALA VAL GLU ARG PRO MET PRO LEU VAL ILE LEU          
SEQRES   7 A  156  GLU GLU VAL VAL LYS TYR PRO GLU GLU THR HIS ILE HIS          
SEQRES   8 A  156  PHE ASP LEU ILE TYR LEU VAL LYS ARG VAL GLY GLY ASP          
SEQRES   9 A  156  LEU LYS ASN GLY GLU TRP ILE ASP VAL ARG GLU ILE ASP          
SEQRES  10 A  156  ARG ILE GLU THR PHE PRO ASN VAL ARG LYS VAL VAL SER          
SEQRES  11 A  156  LEU ALA LEU SER THR LEU TYR ARG LEU GLY LYS ILE SER          
SEQRES  12 A  156  LYS LEU ALA ALA ALA LEU GLU HIS HIS HIS HIS HIS HIS          
SEQRES   1 B  156  MET ILE VAL THR SER GLY VAL LEU VAL GLU ASN GLY LYS          
SEQRES   2 B  156  VAL LEU LEU VAL LYS HIS LYS ARG LEU GLY VAL TYR ILE          
SEQRES   3 B  156  TYR PRO GLY GLY HIS VAL GLU HIS ASN GLU THR PRO ILE          
SEQRES   4 B  156  GLU ALA VAL LYS ARG GLU PHE GLU GLU GLU THR GLY ILE          
SEQRES   5 B  156  VAL VAL GLU PRO ILE GLY PHE THR TYR GLY ILE ILE ASP          
SEQRES   6 B  156  GLU ASN ALA VAL GLU ARG PRO MET PRO LEU VAL ILE LEU          
SEQRES   7 B  156  GLU GLU VAL VAL LYS TYR PRO GLU GLU THR HIS ILE HIS          
SEQRES   8 B  156  PHE ASP LEU ILE TYR LEU VAL LYS ARG VAL GLY GLY ASP          
SEQRES   9 B  156  LEU LYS ASN GLY GLU TRP ILE ASP VAL ARG GLU ILE ASP          
SEQRES  10 B  156  ARG ILE GLU THR PHE PRO ASN VAL ARG LYS VAL VAL SER          
SEQRES  11 B  156  LEU ALA LEU SER THR LEU TYR ARG LEU GLY LYS ILE SER          
SEQRES  12 B  156  LYS LEU ALA ALA ALA LEU GLU HIS HIS HIS HIS HIS HIS          
HET    SO4  A 201       5                                                       
HET    IR3  A 203       1                                                       
HET    IR3  A 205       1                                                       
HET    IR3  A 206       1                                                       
HET     NI  A 207       1                                                       
HET    GOL  A 209       6                                                       
HET    GOL  A 210       6                                                       
HET    GOL  A 211       6                                                       
HET    ACY  A 212       4                                                       
HET    ACY  A 214       4                                                       
HET    SO4  B 202       5                                                       
HET    IR3  B 204       1                                                       
HET     NI  B 208       1                                                       
HET    ACY  B 213       4                                                       
HET    ACY  B 215       4                                                       
HET    ACY  B 216       4                                                       
HETNAM     SO4 SULFATE ION                                                      
HETNAM     IR3 IRIDIUM (III) ION                                                
HETNAM      NI NICKEL (II) ION                                                  
HETNAM     GOL GLYCEROL                                                         
HETNAM     ACY ACETIC ACID                                                      
HETSYN     GOL GLYCERIN; PROPANE-1,2,3-TRIOL                                    
FORMUL   3  SO4    2(O4 S 2-)                                                   
FORMUL   4  IR3    4(IR 3+)                                                     
FORMUL   7   NI    2(NI 2+)                                                     
FORMUL   8  GOL    3(C3 H8 O3)                                                  
FORMUL  11  ACY    5(C2 H4 O2)                                                  
FORMUL  19  HOH   *149(H2 O)                                                    
HELIX    1   1 THR A   37  GLY A   51  1                                  15    
HELIX    2   2 ARG A  114  ILE A  119  5                                   6    
HELIX    3   3 ASN A  124  LEU A  149  1                                  26    
HELIX    4   4 THR B   37  GLY B   51  1                                  15    
HELIX    5   5 GLU B  115  ILE B  119  5                                   5    
HELIX    6   6 ASN B  124  LEU B  139  1                                  16    
SHEET    1   A 6 ILE B  64  ASP B  65  0                                        
SHEET    2   A 6 ALA B  68  GLU B  70 -1  O  ALA B  68   N  ASP B  65           
SHEET    3   A 6 VAL A  76  LYS A  83 -1  N  GLU A  79   O  VAL B  69           
SHEET    4   A 6 THR A  88  GLY A 103 -1  O  HIS A  89   N  VAL A  82           
SHEET    5   A 6 ILE A   2  VAL A   7  1  N  SER A   5   O  TYR A  96           
SHEET    6   A 6 GLY A  29  HIS A  31 -1  O  GLY A  30   N  THR A   4           
SHEET    1   B 5 ILE B  64  ASP B  65  0                                        
SHEET    2   B 5 ALA B  68  GLU B  70 -1  O  ALA B  68   N  ASP B  65           
SHEET    3   B 5 VAL A  76  LYS A  83 -1  N  GLU A  79   O  VAL B  69           
SHEET    4   B 5 THR A  88  GLY A 103 -1  O  HIS A  89   N  VAL A  82           
SHEET    5   B 5 ILE A  52  ILE A  57 -1  N  VAL A  53   O  VAL A 101           
SHEET    1   C 3 GLU A 109  ASP A 112  0                                        
SHEET    2   C 3 LYS A  13  LYS A  18 -1  N  LEU A  16   O  GLU A 109           
SHEET    3   C 3 VAL A   9  GLU A  10 -1  N  GLU A  10   O  LYS A  13           
SHEET    1   D 3 GLU A 109  ASP A 112  0                                        
SHEET    2   D 3 LYS A  13  LYS A  18 -1  N  LEU A  16   O  GLU A 109           
SHEET    3   D 3 TYR A  25  ILE A  26 -1  O  ILE A  26   N  VAL A  17           
SHEET    1   E 5 ALA A  68  GLU A  70  0                                        
SHEET    2   E 5 VAL B  76  LYS B  83 -1  O  GLU B  79   N  VAL A  69           
SHEET    3   E 5 THR B  88  GLY B 103 -1  O  HIS B  89   N  VAL B  82           
SHEET    4   E 5 ILE B   2  VAL B   7  1  N  SER B   5   O  TYR B  96           
SHEET    5   E 5 GLY B  29  HIS B  31 -1  O  GLY B  30   N  THR B   4           
SHEET    1   F 4 ALA A  68  GLU A  70  0                                        
SHEET    2   F 4 VAL B  76  LYS B  83 -1  O  GLU B  79   N  VAL A  69           
SHEET    3   F 4 THR B  88  GLY B 103 -1  O  HIS B  89   N  VAL B  82           
SHEET    4   F 4 ILE B  52  ILE B  57 -1  N  VAL B  53   O  VAL B 101           
SHEET    1   G 3 GLU B 109  ASP B 112  0                                        
SHEET    2   G 3 LYS B  13  LYS B  18 -1  N  VAL B  14   O  ILE B 111           
SHEET    3   G 3 VAL B   9  GLU B  10 -1  N  GLU B  10   O  LYS B  13           
SHEET    1   H 3 GLU B 109  ASP B 112  0                                        
SHEET    2   H 3 LYS B  13  LYS B  18 -1  N  VAL B  14   O  ILE B 111           
SHEET    3   H 3 TYR B  25  ILE B  26 -1  O  ILE B  26   N  VAL B  17           
LINK         NZ  LYS A  20                IR   IR3 A 206     1555   1555  3.37  
LINK         NE2 HIS A  31                IR   IR3 A 206     1555   1555  3.36  
LINK         OE1 GLU A  66                IR   IR3 A 205     1555   1555  3.59  
LINK        IR   IR3 A 203                 O   HOH A 257     1555   1555  2.46  
LINK        IR   IR3 A 203                 O   HOH A 267     1555   1555  2.34  
LINK        IR   IR3 A 203                 O   HOH A 270     1555   1555  2.59  
LINK        IR   IR3 A 203                 O   HOH A 301     1555   1555  2.42  
LINK        IR   IR3 A 203                 O   HOH A 308     1555   1555  2.30  
LINK        IR   IR3 A 205                 O   HOH A 229     1555   1555  2.30  
LINK        IR   IR3 A 206                 O3  GOL A 211     1555   1555  3.60  
LINK        IR   IR3 A 206                 O   HOH A 256     1555   1555  2.32  
LINK        IR   IR3 A 206                 O   HOH A 288     1555   1555  2.58  
LINK         O   HOH A 287                IR   IR3 B 204     1555   1555  2.37  
LINK         NZ  LYS B  18                IR   IR3 B 204     1455   1555  2.77  
LINK         OD2 ASP B  65                IR   IR3 B 204     1555   1555  3.19  
LINK        NI    NI B 208                 O   HOH B 267     1555   1555  2.26  
LINK        NI    NI B 208                 O   HOH B 268     1555   1555  2.35  
SITE     1 AC1  6 ASN A 124  VAL A 125  ARG A 126  LYS A 127                    
SITE     2 AC1  6 HOH A 236  HOH A 287                                          
SITE     1 AC2  5 ASN B 124  VAL B 125  ARG B 126  LYS B 127                    
SITE     2 AC2  5 HOH B 234                                                     
SITE     1 AC3  5 HOH A 257  HOH A 267  HOH A 270  HOH A 301                    
SITE     2 AC3  5 HOH A 308                                                     
SITE     1 AC4  3 HOH A 287  LYS B  18  ASP B  65                               
SITE     1 AC5  2 GLU A  66  HOH A 229                                          
SITE     1 AC6  5 LYS A  20  HIS A  31  GOL A 211  HOH A 256                    
SITE     2 AC6  5 HOH A 288                                                     
SITE     1 AC7  4 ARG A  21  TYR A  84  HIS A  89  HIS A  91                    
SITE     1 AC8  3 HIS B  31  HOH B 267  HOH B 268                               
SITE     1 AC9 10 VAL A   3  ILE A  26  GLY A  29  GLY A  30                    
SITE     2 AC9 10 GLU A  80  HIS A  91  ASP A  93  GOL A 211                    
SITE     3 AC9 10 HOH A 247  HOH A 256                                          
SITE     1 BC1  5 MET A   1  HIS A  89  ILE A  90  ARG A 138                    
SITE     2 BC1  5 HOH A 264                                                     
SITE     1 BC2 10 VAL A  17  LYS A  18  HIS A  19  LYS A  20                    
SITE     2 BC2 10 GLY A  29  GLU A  49  IR3 A 206  GOL A 209                    
SITE     3 BC2 10 HOH A 256  HOH A 299                                          
SITE     1 BC3  5 VAL A  81  LYS A  83  HOH A 233  HOH A 259                    
SITE     2 BC3  5 HOH B 233                                                     
SITE     1 BC4  5 GLU B  80  ASP B  93  PRO B 123  VAL B 125                    
SITE     2 BC4  5 HOH B 259                                                     
SITE     1 BC5  2 GLU A  10  ASN A  11                                          
SITE     1 BC6  3 GLU B  10  ASN B  11  TRP B 110                               
SITE     1 BC7  2 GLU B  80  HIS B  91                                          
CRYST1   52.424   71.655   85.762  90.00  90.00  90.00 P 21 21 21    8          
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      0.019075  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.013956  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011660        0.00000