HEADER    EYE LENS PROTEIN                        21-SEP-92   2BB2              
TITLE     X-RAY ANALYSIS OF BETA B2-CRYSTALLIN AND EVOLUTION OF OLIGOMERIC LENS 
TITLE    2 PROTEINS                                                             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: BETA B2-CRYSTALLIN;                                        
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: BOS TAURUS;                                     
SOURCE   3 ORGANISM_COMMON: CATTLE;                                             
SOURCE   4 ORGANISM_TAXID: 9913                                                 
KEYWDS    EYE LENS PROTEIN                                                      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.BAX,R.LAPATTO,V.NALINI,H.DRIESSEN,P.F.LINDLEY,D.MAHADEVAN,          
AUTHOR   2 T.L.BLUNDELL,C.SLINGSBY                                              
REVDAT   6   05-JUN-24 2BB2    1       REMARK LINK                              
REVDAT   5   13-JUL-11 2BB2    1       VERSN                                    
REVDAT   4   24-FEB-09 2BB2    1       VERSN                                    
REVDAT   3   01-APR-03 2BB2    1       JRNL                                     
REVDAT   2   15-JAN-95 2BB2    1       REMARK                                   
REVDAT   1   31-OCT-93 2BB2    0                                                
JRNL        AUTH   B.BAX,R.LAPATTO,V.NALINI,H.DRIESSEN,P.F.LINDLEY,D.MAHADEVAN, 
JRNL        AUTH 2 T.L.BLUNDELL,C.SLINGSBY                                      
JRNL        TITL   X-RAY ANALYSIS OF BETA B2-CRYSTALLIN AND EVOLUTION OF        
JRNL        TITL 2 OLIGOMERIC LENS PROTEINS.                                    
JRNL        REF    NATURE                        V. 347   776 1990              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   2234050                                                      
JRNL        DOI    10.1038/347776A0                                             
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   B.BAX,C.SLINGSBY                                             
REMARK   1  TITL   CRYSTALLIZATION OF A NEW FORM OF THE EYE LENS PROTEIN BETA   
REMARK   1  TITL 2 B2-CRYSTALLIN                                                
REMARK   1  REF    J.MOL.BIOL.                   V. 208   715 1989              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : NULL                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : NULL                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.186                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1464                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 8                                       
REMARK   3   SOLVENT ATOMS            : 92                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
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  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  THE ELECTRON DENSITY MAPS IN THE REGION OF RESIDUES CYS 22          
REMARK   3  AND CYS 50 (AT THE 3 SIGMA LEVEL) OF THE HIGHLY REFINED             
REMARK   3  STRUCTURE OF BETA-B2 AT 2.1 A (I222 CRYSTAL FORM), SHOW             
REMARK   3  ADDITIONAL DENSITY WHICH IS INTERPRETED AS A MIXED                  
REMARK   3  DISULFIDE WITH BETA-MERCAPTOETHANOL OR DITHIOTHREITOL.              
REMARK   3  AS BETA-MERCAPTOETHANOL FRAGMENT IS COMMON TO BOTH, A               
REMARK   3  DISULFIDE BRIDGE WITH BETA-MERCAPTOETHANOL WAS MODELLED             
REMARK   3  AT RESIDUES 22 AND 50 AND REFINED INTO DENSITY WITH A S-S           
REMARK   3  DISTANCE OF 2.08 A.  ELECTRON DENSITY FOR THE CYS 22                
REMARK   3  ADDUCT INDICATED TWO POSITIONS.  THE MAJOR SITE (55%                
REMARK   3  OCCUPANCY) IS A RIGHT HANDED DISULFIDE, WITH CHI 3 = 85,            
REMARK   3  THE MINOR SITE (45% OCCUPANCY), IS A LEFT HANDED SPIRAL             
REMARK   3  DISULFIDE, CHI 3 = -79.  A RIGHT HANDED DISULFIDE,                  
REMARK   3  CHI 3 = 87 WAS BUILT INTO THE ELECTRON DENSITY AT CYS 50.           
REMARK   3  THESE MODELS WERE SUBSEQUENTLY REFINED USING RESTRAIN.              
REMARK   3  THE RESULTING CONFORMATIONS OF THE MIXED DISULFIDES WERE            
REMARK   3  CONFIRMED BY CALCULATING OMIT ELECTRON DENSITY MAPS.                
REMARK   4                                                                      
REMARK   4 2BB2 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000177808.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 71.22                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.27                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 2 2 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   X+1/2,Y+1/2,Z+1/2                                       
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+1/2                                     
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  1.000000  0.000000  0.000000       38.90000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       41.80000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       54.55000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       38.90000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       41.80000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       54.55000            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       38.90000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       41.80000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       54.55000            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       38.90000            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       41.80000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       54.55000            
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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PQS                                                   
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       77.80000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000       83.60000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3 -1.000000  0.000000  0.000000       77.80000            
REMARK 350   BIOMT2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 350   BIOMT1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   4  0.000000 -1.000000  0.000000       83.60000            
REMARK 350   BIOMT3   4  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: 4760 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 16710 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -19.0 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        0.00000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000       83.60000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000            
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   NE1  TRP A   175     O    HOH A   267              1.84            
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   NH1  ARG A   140     O    HOH A   189     2665     2.13            
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    ASN A  -1   CB  -  CA  -  C   ANGL. DEV. = -12.2 DEGREES          
REMARK 500    CYS A  22   CB  -  CA  -  C   ANGL. DEV. =  13.8 DEGREES          
REMARK 500    GLU A  27   CA  -  CB  -  CG  ANGL. DEV. = -14.7 DEGREES          
REMARK 500    GLU A  27   CB  -  CG  -  CD  ANGL. DEV. = -22.6 DEGREES          
REMARK 500    GLU A  27   OE1 -  CD  -  OE2 ANGL. DEV. =   9.2 DEGREES          
REMARK 500    VAL A  43   CA  -  CB  -  CG1 ANGL. DEV. =  10.9 DEGREES          
REMARK 500    VAL A  56   CA  -  CB  -  CG2 ANGL. DEV. = -10.4 DEGREES          
REMARK 500    TYR A  62   CB  -  CG  -  CD2 ANGL. DEV. =  -4.3 DEGREES          
REMARK 500    TYR A  62   CD1 -  CE1 -  CZ  ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    ARG A  64   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ARG A  71   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500    THR A  72   C   -  N   -  CA  ANGL. DEV. =  24.3 DEGREES          
REMARK 500    ARG A  79   CD  -  NE  -  CZ  ANGL. DEV. =  -9.0 DEGREES          
REMARK 500    SER A  85   CA  -  C   -  O   ANGL. DEV. = -12.8 DEGREES          
REMARK 500    GLN A  86   C   -  N   -  CA  ANGL. DEV. =  20.2 DEGREES          
REMARK 500    TYR A  93   CG  -  CD2 -  CE2 ANGL. DEV. =  -7.8 DEGREES          
REMARK 500    MET A 103   CG  -  SD  -  CE  ANGL. DEV. =  10.3 DEGREES          
REMARK 500    ASP A 107   CB  -  CG  -  OD1 ANGL. DEV. =   6.1 DEGREES          
REMARK 500    ASP A 107   CB  -  CG  -  OD2 ANGL. DEV. =  -9.7 DEGREES          
REMARK 500    ARG A 125   O   -  C   -  N   ANGL. DEV. = -11.2 DEGREES          
REMARK 500    VAL A 126   CA  -  CB  -  CG2 ANGL. DEV. =  10.7 DEGREES          
REMARK 500    VAL A 132   CA  -  CB  -  CG2 ANGL. DEV. =   9.0 DEGREES          
REMARK 500    TYR A 134   CB  -  CG  -  CD1 ANGL. DEV. =  -4.3 DEGREES          
REMARK 500    TYR A 134   CG  -  CD2 -  CE2 ANGL. DEV. =  -5.8 DEGREES          
REMARK 500    GLN A 161   O   -  C   -  N   ANGL. DEV. =  12.0 DEGREES          
REMARK 500    ARG A 168   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.1 DEGREES          
REMARK 500    ARG A 169   NE  -  CZ  -  NH1 ANGL. DEV. =   5.9 DEGREES          
REMARK 500    ARG A 169   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.2 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    TYR A  62       79.20   -116.57                                   
REMARK 500    ARG A  71A     -73.49    -65.73                                   
REMARK 500    ASP A 106A     -40.02     59.58                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    ARG A  64         0.32    SIDE CHAIN                              
REMARK 500    ARG A  71         0.25    SIDE CHAIN                              
REMARK 500    ARG A  71A        0.11    SIDE CHAIN                              
REMARK 500    ARG A 125         0.22    SIDE CHAIN                              
REMARK 500    ARG A 140         0.23    SIDE CHAIN                              
REMARK 500    ARG A 171         0.08    SIDE CHAIN                              
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 BME A 176                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BME A 177                 
DBREF  2BB2 A   -2   175  UNP    P02522   CRBB2_BOVIN     14    194             
SEQRES   1 A  181  LEU ASN PRO LYS ILE ILE ILE PHE GLU GLN GLU ASN PHE          
SEQRES   2 A  181  GLN GLY HIS SER HIS GLU LEU ASN GLY PRO CYS PRO ASN          
SEQRES   3 A  181  LEU LYS GLU THR GLY VAL GLU LYS ALA GLY SER VAL LEU          
SEQRES   4 A  181  VAL GLN ALA GLY PRO TRP VAL GLY TYR GLU GLN ALA ASN          
SEQRES   5 A  181  CYS LYS GLY GLU GLN PHE VAL PHE GLU LYS GLY GLU TYR          
SEQRES   6 A  181  PRO ARG TRP ASP SER TRP THR SER SER ARG ARG THR ASP          
SEQRES   7 A  181  SER LEU SER SER LEU ARG PRO ILE LYS VAL ASP SER GLN          
SEQRES   8 A  181  GLU HIS LYS ILE THR LEU TYR GLU ASN PRO ASN PHE THR          
SEQRES   9 A  181  GLY LYS LYS MET GLU VAL ILE ASP ASP ASP VAL PRO SER          
SEQRES  10 A  181  PHE HIS ALA HIS GLY TYR GLN GLU LYS VAL SER SER VAL          
SEQRES  11 A  181  ARG VAL GLN SER GLY THR TRP VAL GLY TYR GLN TYR PRO          
SEQRES  12 A  181  GLY TYR ARG GLY LEU GLN TYR LEU LEU GLU LYS GLY ASP          
SEQRES  13 A  181  TYR LYS ASP SER GLY ASP PHE GLY ALA PRO GLN PRO GLN          
SEQRES  14 A  181  VAL GLN SER VAL ARG ARG ILE ARG ASP MET GLN TRP              
HET    BME  A 176       8                                                       
HET    BME  A 177       4                                                       
HETNAM     BME BETA-MERCAPTOETHANOL                                             
FORMUL   2  BME    2(C2 H6 O S)                                                 
FORMUL   4  HOH   *92(H2 O)                                                     
HELIX    1   1 ASN A   24  GLY A   28A 5                                   6    
HELIX    2   2 ARG A   64  TRP A   68  5                                   5    
HELIX    3   3 PHE A  112  GLY A  117  5                                   5    
HELIX    4   4 ASP A  153  GLY A  158  5                                   6    
SHEET    1   A 4 GLN A  12  LEU A  18  0                                        
SHEET    2   A 4 LYS A   2  GLN A   8 -1  O  ILE A   3   N  LEU A  18           
SHEET    3   A 4 SER A  34  ALA A  39 -1  O  SER A  34   N  PHE A   6           
SHEET    4   A 4 GLY A  60  TYR A  62 -1  O  GLY A  60   N  VAL A  37           
SHEET    1   B 3 LYS A  51  PHE A  57  0                                        
SHEET    2   B 3 TRP A  42  GLN A  47 -1  O  TRP A  42   N  PHE A  57           
SHEET    3   B 3 SER A  77  PRO A  80 -1  O  SER A  77   N  TYR A  45           
SHEET    1   C 4 THR A  99  ILE A 106  0                                        
SHEET    2   C 4 LYS A  89  ASN A  95 -1  O  ILE A  90   N  VAL A 105           
SHEET    3   C 4 SER A 123  VAL A 126 -1  O  SER A 123   N  TYR A  93           
SHEET    4   C 4 GLY A 149  TYR A 151 -1  O  GLY A 149   N  VAL A 126           
SHEET    1   D 3 ARG A 140  LEU A 146  0                                        
SHEET    2   D 3 TRP A 131  TYR A 136 -1  O  TRP A 131   N  LEU A 146           
SHEET    3   D 3 SER A 166  ARG A 169 -1  O  SER A 166   N  TYR A 134           
LINK         SG ACYS A  22                 S2 ABME A 176     1555   1555  2.04  
LINK         SG BCYS A  22                 S2 BBME A 176     1555   1555  2.04  
LINK         SG  CYS A  50                 S2  BME A 177     1555   1555  2.05  
CISPEP   1 GLY A   40    PRO A   41          0         2.60                     
SITE     1 AC1  6 LEU A  18  PRO A  21  CYS A  22  ASN A  24                    
SITE     2 AC1  6 GLU A  27  THR A  28                                          
SITE     1 AC2  3 PRO A  21  ASN A  49  CYS A  50                               
CRYST1   77.800   83.600  109.100  90.00  90.00  90.00 I 2 2 2       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      0.012853  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.011962  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009166        0.00000