HEADER    SIGNALING PROTEIN                       24-JAN-10   3LI9              
TITLE     CRYSTAL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF THE PUTATIVE         
TITLE    2 HISTIDINE KINASE MMHK1S-Z2                                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: HYPOTHETICAL SENSORY TRANSDUCTION HISTIDINE KINASE;        
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: EXTRACELLULAR DOMAIN (UNP RESIDUES 32-313);                
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: METHANOSARCINA MAZEI;                           
SOURCE   3 ORGANISM_COMMON: METHANOSARCINA FRISIA;                              
SOURCE   4 ORGANISM_TAXID: 2209;                                                
SOURCE   5 STRAIN: DSM 3647;                                                    
SOURCE   6 GENE: MM_2955;                                                       
SOURCE   7 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   8 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   9 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE  10 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  11 EXPRESSION_SYSTEM_PLASMID: PET22B+                                   
KEYWDS    PDC FOLD, SIGNALING PROTEIN                                           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Z.ZHANG,W.A.HENDRICKSON                                               
REVDAT   4   27-NOV-24 3LI9    1       REMARK SEQADV LINK                       
REVDAT   3   01-NOV-17 3LI9    1       REMARK                                   
REVDAT   2   11-AUG-10 3LI9    1       JRNL                                     
REVDAT   1   05-MAY-10 3LI9    0                                                
JRNL        AUTH   Z.ZHANG,W.A.HENDRICKSON                                      
JRNL        TITL   STRUCTURAL CHARACTERIZATION OF THE PREDOMINANT FAMILY OF     
JRNL        TITL 2 HISTIDINE KINASE SENSOR DOMAINS.                             
JRNL        REF    J.MOL.BIOL.                   V. 400   335 2010              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   20435045                                                     
JRNL        DOI    10.1016/J.JMB.2010.04.049                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.70 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0066                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 19.91                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 32966                          
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 + TEST SET) : 0.182                           
REMARK   3   R VALUE            (WORKING SET) : 0.181                           
REMARK   3   FREE R VALUE                     : 0.211                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1668                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.70                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.74                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 2159                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 93.00                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2330                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 99                           
REMARK   3   BIN FREE R VALUE                    : 0.2990                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2061                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 14                                      
REMARK   3   SOLVENT ATOMS            : 230                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 22.81                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 2.10000                                              
REMARK   3    B22 (A**2) : -0.74000                                             
REMARK   3    B33 (A**2) : -1.36000                                             
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.101         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.099         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.063         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.887         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.957                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.945                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2124 ; 0.027 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2879 ; 2.079 ; 1.966       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   261 ; 5.477 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   102 ;35.656 ;25.196       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   347 ;12.797 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     7 ;20.595 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   308 ; 0.157 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1639 ; 0.011 ; 0.021       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  1303 ; 1.387 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2109 ; 2.374 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   821 ; 3.955 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   770 ; 5.972 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS. U VALUES: REFINED INDIVIDUALLY                           
REMARK   4                                                                      
REMARK   4 3LI9 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 11-FEB-10.                  
REMARK 100 THE DEPOSITION ID IS D_1000057310.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-AUG-06                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 5.6                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X4A                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.97903, 0.97936, 0.97174          
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 62673                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.700                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.9                               
REMARK 200  DATA REDUNDANCY                : 4.700                              
REMARK 200  R MERGE                    (I) : 0.05100                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 16.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.76                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 93.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.50                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.33500                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: MAD                                            
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD                          
REMARK 200 SOFTWARE USED: SOLVE                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 44.81                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.23                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 15% PEG3350, 0.21M NH4SO4,               
REMARK 280  0.1MBISTRIS, PH 5.6, VAPOR DIFFUSION, TEMPERATURE 293K              
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -X,Y,-Z+1/2                                             
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z                                           
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   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        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       49.58850            
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       49.58850            
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  1.000000  0.000000  0.000000       33.64150            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       44.24750            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       33.64150            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       44.24750            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       49.58850            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       33.64150            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       44.24750            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       49.58850            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       33.64150            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       44.24750            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: MONOMERIC                         
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                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 4160 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 21700 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -2.0 KCAL/MOL                         
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       67.28300            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       49.58850            
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     MSE A    30                                                      
REMARK 465     GLU A    31                                                      
REMARK 465     ILE A    32                                                      
REMARK 465     GLY A    33                                                      
REMARK 465     THR A    34                                                      
REMARK 465     VAL A    35                                                      
REMARK 465     THR A    36                                                      
REMARK 465     SER A    37                                                      
REMARK 465     GLN A    38                                                      
REMARK 465     GLU A    39                                                      
REMARK 465     GLU A    40                                                      
REMARK 465     ALA A   303                                                      
REMARK 465     GLY A   304                                                      
REMARK 465     VAL A   305                                                      
REMARK 465     LYS A   306                                                      
REMARK 465     ASP A   307                                                      
REMARK 465     LEU A   308                                                      
REMARK 465     ARG A   309                                                      
REMARK 465     ASP A   310                                                      
REMARK 465     ARG A   311                                                      
REMARK 465     LEU A   312                                                      
REMARK 465     LEU A   313                                                      
REMARK 465     GLU A   314                                                      
REMARK 465     HIS A   315                                                      
REMARK 465     HIS A   316                                                      
REMARK 465     HIS A   317                                                      
REMARK 465     HIS A   318                                                      
REMARK 465     HIS A   319                                                      
REMARK 465     HIS A   320                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    ALA A    43     O    HOH A   477              1.82            
REMARK 500   OD2  ASP A   183     O    HOH A   462              2.13            
REMARK 500   CD   LYS A    41     O    HOH A   497              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A   364     O    HOH A   450     3655     2.11            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    GLU A 146   CD    GLU A 146   OE2     0.068                       
REMARK 500    GLU A 170   CD    GLU A 170   OE2     0.077                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    MSE A  76   CG  - SE   -  CE  ANGL. DEV. = -14.0 DEGREES          
REMARK 500    ARG A 131   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.7 DEGREES          
REMARK 500    ARG A 213   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.7 DEGREES          
REMARK 500    MSE A 222   CG  - SE   -  CE  ANGL. DEV. = -13.9 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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    ASP A 114        6.32   -152.30                                   
REMARK 500    ASP A 127     -167.74   -117.19                                   
REMARK 500    PHE A 215     -136.18     52.19                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTB A 1                   
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 3LI8   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3LIA   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3LIB   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3LIC   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3LID   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3LIE   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3LIF   RELATED DB: PDB                                   
DBREF  3LI9 A   32   313  UNP    Q8PSW8   Q8PSW8_METMA    32    313             
SEQADV 3LI9 MSE A   30  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 GLU A   31  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 GLU A  314  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 HIS A  315  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 HIS A  316  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 HIS A  317  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 HIS A  318  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 HIS A  319  UNP  Q8PSW8              EXPRESSION TAG                 
SEQADV 3LI9 HIS A  320  UNP  Q8PSW8              EXPRESSION TAG                 
SEQRES   1 A  291  MSE GLU ILE GLY THR VAL THR SER GLN GLU GLU LYS LEU          
SEQRES   2 A  291  ALA TYR GLU LYS SER ILE GLU MSE ALA GLY ASN TYR ALA          
SEQRES   3 A  291  ASN GLN PHE ASP ALA GLN MSE GLU ALA ASN GLN ALA ILE          
SEQRES   4 A  291  ALA ARG THR LEU ALA CYS THR MSE ALA GLU TYR GLY SER          
SEQRES   5 A  291  GLN ASP ARG GLU GLU ALA MSE SER ILE ILE LYS ARG ILE          
SEQRES   6 A  291  LEU ASN GLU ASN PRO GLN LEU ILE GLY VAL TYR LEU GLY          
SEQRES   7 A  291  TYR GLU PRO ASP ALA PHE ASP GLY ARG ASP LYS ASN TYR          
SEQRES   8 A  291  ILE ASN ALA PRO GLY HIS ASP SER THR GLY ARG PHE VAL          
SEQRES   9 A  291  PRO TYR CYS ASN LYS ILE ASN GLY PRO VAL ILE ILE GLU          
SEQRES  10 A  291  PRO LEU VAL HIS TYR ASP SER SER ASP TYR TYR GLN LEU          
SEQRES  11 A  291  PRO LYS THR THR GLY LYS ASP THR LEU THR GLU PRO TYR          
SEQRES  12 A  291  PHE TYR GLU GLY ILE PHE MSE VAL SER TYR ASP SER PRO          
SEQRES  13 A  291  ILE PHE LYS ASN GLY GLU PHE ALA GLY ILE ALA GLY VAL          
SEQRES  14 A  291  ASP VAL PRO LEU GLU TYR VAL ASP ASP VAL ALA SER SER          
SEQRES  15 A  291  ILE ARG THR PHE ASP THR GLY TYR ALA PHE MSE VAL SER          
SEQRES  16 A  291  ASN THR GLY ILE PHE LEU SER HIS PRO THR GLN LYS ASN          
SEQRES  17 A  291  TRP ILE GLY GLU LYS SER LEU SER ASP PHE ASP VAL GLU          
SEQRES  18 A  291  GLU ILE LYS ASN ALA ALA SER ASP ILE ARG GLU GLY ILE          
SEQRES  19 A  291  GLY GLY HIS VAL GLU ILE LYS ASP PRO ILE THR GLY LYS          
SEQRES  20 A  291  THR VAL ILE MSE PHE TYR GLU PRO VAL LYS THR GLY ASP          
SEQRES  21 A  291  PHE SER PHE VAL LEU VAL VAL PRO LYS GLU GLU MSE LEU          
SEQRES  22 A  291  ALA GLY VAL LYS ASP LEU ARG ASP ARG LEU LEU GLU HIS          
SEQRES  23 A  291  HIS HIS HIS HIS HIS                                          
MODRES 3LI9 MSE A   50  MET  SELENOMETHIONINE                                   
MODRES 3LI9 MSE A   62  MET  SELENOMETHIONINE                                   
MODRES 3LI9 MSE A   76  MET  SELENOMETHIONINE                                   
MODRES 3LI9 MSE A   88  MET  SELENOMETHIONINE                                   
MODRES 3LI9 MSE A  179  MET  SELENOMETHIONINE                                   
MODRES 3LI9 MSE A  222  MET  SELENOMETHIONINE                                   
MODRES 3LI9 MSE A  280  MET  SELENOMETHIONINE                                   
MODRES 3LI9 MSE A  301  MET  SELENOMETHIONINE                                   
HET    MSE  A  50       8                                                       
HET    MSE  A  62       8                                                       
HET    MSE  A  76       8                                                       
HET    MSE  A  88       8                                                       
HET    MSE  A 179       8                                                       
HET    MSE  A 222       8                                                       
HET    MSE  A 280       8                                                       
HET    MSE  A 301       8                                                       
HET    BTB  A   1      14                                                       
HETNAM     MSE SELENOMETHIONINE                                                 
HETNAM     BTB 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-                 
HETNAM   2 BTB  PROPANE-1,3-DIOL                                                
HETSYN     BTB BIS-TRIS BUFFER                                                  
FORMUL   1  MSE    8(C5 H11 N O2 SE)                                            
FORMUL   2  BTB    C8 H19 N O5                                                  
FORMUL   3  HOH   *230(H2 O)                                                    
HELIX    1   1 LYS A   41  GLU A   78  1                                  38    
HELIX    2   2 ASP A   83  GLU A   97  1                                  15    
HELIX    3   3 ARG A  116  TYR A  120  5                                   5    
HELIX    4   4 SER A  154  GLY A  164  1                                  11    
HELIX    5   5 LEU A  202  SER A  210  1                                   9    
HELIX    6   6 GLN A  235  ILE A  239  5                                   5    
HELIX    7   7 SER A  243  PHE A  247  5                                   5    
HELIX    8   8 VAL A  249  GLU A  261  1                                  13    
HELIX    9   9 LYS A  298  LEU A  302  1                                   5    
SHEET    1   A 6 ILE A 144  PRO A 147  0                                        
SHEET    2   A 6 PRO A 134  ASN A 137 -1  N  TYR A 135   O  GLU A 146           
SHEET    3   A 6 GLY A 103  TYR A 108 -1  N  VAL A 104   O  CYS A 136           
SHEET    4   A 6 GLU A 191  PRO A 201 -1  O  GLY A 197   N  TYR A 105           
SHEET    5   A 6 ILE A 177  LYS A 188 -1  N  ILE A 186   O  ALA A 193           
SHEET    6   A 6 THR A 167  LEU A 168 -1  N  THR A 167   O  ASP A 183           
SHEET    1   B 6 ILE A 144  PRO A 147  0                                        
SHEET    2   B 6 PRO A 134  ASN A 137 -1  N  TYR A 135   O  GLU A 146           
SHEET    3   B 6 GLY A 103  TYR A 108 -1  N  VAL A 104   O  CYS A 136           
SHEET    4   B 6 GLU A 191  PRO A 201 -1  O  GLY A 197   N  TYR A 105           
SHEET    5   B 6 ILE A 177  LYS A 188 -1  N  ILE A 186   O  ALA A 193           
SHEET    6   B 6 TYR A 172  TYR A 174 -1  N  TYR A 172   O  MSE A 179           
SHEET    1   C 4 TYR A 219  VAL A 223  0                                        
SHEET    2   C 4 PHE A 290  PRO A 297 -1  O  VAL A 295   N  TYR A 219           
SHEET    3   C 4 THR A 277  VAL A 285 -1  N  ILE A 279   O  VAL A 296           
SHEET    4   C 4 GLY A 265  LYS A 270 -1  N  ILE A 269   O  VAL A 278           
LINK         C   GLU A  49                 N   MSE A  50     1555   1555  1.33  
LINK         C   MSE A  50                 N   ALA A  51     1555   1555  1.33  
LINK         C   GLN A  61                 N   MSE A  62     1555   1555  1.31  
LINK         C   MSE A  62                 N   GLU A  63     1555   1555  1.32  
LINK         C   THR A  75                 N   MSE A  76     1555   1555  1.34  
LINK         C   MSE A  76                 N   ALA A  77     1555   1555  1.31  
LINK         C   ALA A  87                 N   MSE A  88     1555   1555  1.34  
LINK         C   MSE A  88                 N   SER A  89     1555   1555  1.35  
LINK         C   PHE A 178                 N   MSE A 179     1555   1555  1.32  
LINK         C   MSE A 179                 N   VAL A 180     1555   1555  1.33  
LINK         C   PHE A 221                 N   MSE A 222     1555   1555  1.32  
LINK         C   MSE A 222                 N   VAL A 223     1555   1555  1.33  
LINK         C   ILE A 279                 N   MSE A 280     1555   1555  1.32  
LINK         C   MSE A 280                 N   PHE A 281     1555   1555  1.34  
LINK         C   GLU A 300                 N   MSE A 301     1555   1555  1.33  
LINK         C   MSE A 301                 N   LEU A 302     1555   1555  1.32  
SITE     1 AC1 11 TYR A 105  TYR A 135  LEU A 148  VAL A 149                    
SITE     2 AC1 11 TYR A 156  TYR A 172  TYR A 174  MSE A 179                    
SITE     3 AC1 11 SER A 181  ASP A 199  HOH A 517                               
CRYST1   67.283   88.495   99.177  90.00  90.00  90.00 C 2 2 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      0.014863  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.011300  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.010083        0.00000