HEADER    FLUORESCENT PROTEIN                     07-MAY-24   8ZEX              
TITLE     BIOSENSOR HALOKBP1A                                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: HALOKBP1A;                                                 
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    GENETICALLY ENCODED BIOSENSOR, POTASSIUM BINDING PROTEIN, HALOTAG,    
KEYWDS   2 FLUORESCENT PROTEIN                                                  
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Y.WEN,R.E.CAMPBELL                                                    
REVDAT   2   08-JAN-25 8ZEX    1       JRNL                                     
REVDAT   1   18-DEC-24 8ZEX    0                                                
JRNL        AUTH   D.CHENG,Z.OUYANG,X.HE,Y.NASU,Y.WEN,T.TERAI,R.E.CAMPBELL      
JRNL        TITL   HIGH-PERFORMANCE CHEMIGENETIC POTASSIUM ION INDICATOR.       
JRNL        REF    J.AM.CHEM.SOC.                V. 146 35117 2024              
JRNL        REFN                   ESSN 1520-5126                               
JRNL        PMID   39601449                                                     
JRNL        DOI    10.1021/JACS.4C10917                                         
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.66 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PHENIX (1.19_4092: ???)                              
REMARK   3   AUTHORS     : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN            
REMARK   3               : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE,           
REMARK   3               : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER,            
REMARK   3               : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY,              
REMARK   3               : REETAL PAI,RANDY READ,JANE RICHARDSON,               
REMARK   3               : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI,           
REMARK   3               : NICHOLAS SAUTER,JACOB SMITH,LAURENT                  
REMARK   3               : STORONI,TOM TERWILLIGER,PETER ZWART                  
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : ML                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.66                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 18.24                          
REMARK   3   MIN(FOBS/SIGMA_FOBS)              : 1.960                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 96.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 55604                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.184                           
REMARK   3   R VALUE            (WORKING SET) : 0.183                           
REMARK   3   FREE R VALUE                     : 0.204                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 3.600                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1999                            
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (IN BINS).                           
REMARK   3   BIN  RESOLUTION RANGE  COMPL.    NWORK NFREE   RWORK  RFREE        
REMARK   3     1 18.2400 -  3.9900    0.98     3915   145  0.1454 0.1449        
REMARK   3     2  3.9900 -  3.1700    0.96     3817   143  0.1596 0.1572        
REMARK   3     3  3.1700 -  2.7700    0.96     3815   143  0.1834 0.2098        
REMARK   3     4  2.7700 -  2.5200    0.96     3866   144  0.1983 0.2503        
REMARK   3     5  2.5200 -  2.3400    0.96     3845   143  0.1903 0.2348        
REMARK   3     6  2.3400 -  2.2000    0.96     3821   143  0.1853 0.2286        
REMARK   3     7  2.2000 -  2.0900    0.96     3836   144  0.1846 0.2323        
REMARK   3     8  2.0900 -  2.0000    0.96     3840   142  0.1908 0.1894        
REMARK   3     9  2.0000 -  1.9200    0.96     3835   142  0.2032 0.2366        
REMARK   3    10  1.9200 -  1.8600    0.96     3791   142  0.2196 0.2734        
REMARK   3    11  1.8600 -  1.8000    0.95     3826   143  0.2417 0.2831        
REMARK   3    12  1.8000 -  1.7500    0.96     3828   143  0.2650 0.2734        
REMARK   3    13  1.7500 -  1.7000    0.95     3801   141  0.2911 0.3500        
REMARK   3    14  1.7000 -  1.6600    0.95     3769   141  0.3250 0.3457        
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED        : FLAT BULK SOLVENT MODEL                       
REMARK   3   SOLVENT RADIUS     : 1.11                                          
REMARK   3   SHRINKAGE RADIUS   : 0.90                                          
REMARK   3   K_SOL              : NULL                                          
REMARK   3   B_SOL              : NULL                                          
REMARK   3                                                                      
REMARK   3  ERROR ESTIMATES.                                                    
REMARK   3   COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED)     : 0.220            
REMARK   3   PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 24.490           
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  TWINNING INFORMATION.                                               
REMARK   3   FRACTION: NULL                                                     
REMARK   3   OPERATOR: NULL                                                     
REMARK   3                                                                      
REMARK   3  DEVIATIONS FROM IDEAL VALUES.                                       
REMARK   3                 RMSD          COUNT                                  
REMARK   3   BOND      :  0.008           3544                                  
REMARK   3   ANGLE     :  1.043           4841                                  
REMARK   3   CHIRALITY :  0.064            531                                  
REMARK   3   PLANARITY :  0.009            631                                  
REMARK   3   DIHEDRAL  :  5.523            469                                  
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 1                                          
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    SELECTION: ALL                                                    
REMARK   3    ORIGIN FOR THE GROUP (A):  -6.7273   7.0544  -9.2500              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.1651 T22:   0.1795                                     
REMARK   3      T33:   0.1803 T12:  -0.0044                                     
REMARK   3      T13:   0.0134 T23:  -0.0166                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.4197 L22:   1.0955                                     
REMARK   3      L33:   0.3953 L12:  -0.0873                                     
REMARK   3      L13:   0.1423 L23:  -0.1290                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0132 S12:  -0.0078 S13:  -0.0257                       
REMARK   3      S21:  -0.0913 S22:   0.0028 S23:   0.0289                       
REMARK   3      S31:  -0.0394 S32:  -0.0223 S33:   0.0058                       
REMARK   3                                                                      
REMARK   3  NCS DETAILS                                                         
REMARK   3   NUMBER OF NCS GROUPS : NULL                                        
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 8ZEX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 15-MAY-24.                  
REMARK 100 THE DEPOSITION ID IS D_1300047655.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 29-MAR-24                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRF                               
REMARK 200  BEAMLINE                       : BL18U1                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.98                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : DECTRIS PILATUS3 6M                
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XDS                                
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 55656                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.660                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 18.240                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 95.9                               
REMARK 200  DATA REDUNDANCY                : 3.500                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 9.4000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.66                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.72                     
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: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 47.68                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.35                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M PCTP, PH 6.0 25% PEG1500, VAPOR     
REMARK 280  DIFFUSION, SITTING DROP, TEMPERATURE 293K                           
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,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                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: 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 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     GLY A     2                                                      
REMARK 465     GLY A     3                                                      
REMARK 465     SER A     4                                                      
REMARK 465     HIS A     5                                                      
REMARK 465     HIS A     6                                                      
REMARK 465     HIS A     7                                                      
REMARK 465     HIS A     8                                                      
REMARK 465     HIS A     9                                                      
REMARK 465     HIS A    10                                                      
REMARK 465     GLY A    11                                                      
REMARK 465     MET A    12                                                      
REMARK 465     ALA A    13                                                      
REMARK 465     SER A    14                                                      
REMARK 465     MET A    15                                                      
REMARK 465     THR A    16                                                      
REMARK 465     GLY A    17                                                      
REMARK 465     GLY A    18                                                      
REMARK 465     GLN A    19                                                      
REMARK 465     GLN A    20                                                      
REMARK 465     MET A    21                                                      
REMARK 465     GLY A    22                                                      
REMARK 465     ARG A    23                                                      
REMARK 465     ASP A    24                                                      
REMARK 465     LEU A    25                                                      
REMARK 465     TYR A    26                                                      
REMARK 465     ASP A    27                                                      
REMARK 465     ASP A    28                                                      
REMARK 465     ASP A    29                                                      
REMARK 465     ASP A    30                                                      
REMARK 465     LYS A    31                                                      
REMARK 465     ASP A    32                                                      
REMARK 465     PRO A    33                                                      
REMARK 465     SER A    34                                                      
REMARK 465     SER A    35                                                      
REMARK 465     ARG A    36                                                      
REMARK 465     ALA A   198                                                      
REMARK 465     VAL A   199                                                      
REMARK 465     THR A   200                                                      
REMARK 465     GLY A   201                                                      
REMARK 465     GLN A   202                                                      
REMARK 465     HIS A   203                                                      
REMARK 465     ASP A   204                                                      
REMARK 465     LYS A   205                                                      
REMARK 465     SER A   483                                                      
REMARK 465     GLY A   484                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     MET A  37    CG   SD   CE                                        
REMARK 470     GLU A  39    CG   CD   OE1  OE2                                  
REMARK 470     GLU A 197    CG   CD   OE1  OE2                                  
REMARK 470     ASP A 206    CG   OD1  OD2                                       
REMARK 470     LYS A 218    CG   CD   CE   NZ                                   
REMARK 470     GLU A 481    CG   CD   OE1  OE2                                  
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    HOH A   689     O    HOH A   886              2.04            
REMARK 500   O    HOH A   963     O    HOH A   967              2.12            
REMARK 500   O    HOH A   868     O    HOH A   873              2.16            
REMARK 500   O    HOH A   707     O    HOH A   830              2.16            
REMARK 500   O    HOH A   871     O    HOH A   899              2.17            
REMARK 500   O    HOH A   824     O    HOH A   849              2.17            
REMARK 500   O    HOH A   648     O    HOH A   756              2.18            
REMARK 500   O    HOH A   663     O    HOH A   728              2.18            
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    LEU A 408   CA  -  CB  -  CG  ANGL. DEV. =  15.5 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    PRO A  45       56.81    -91.45                                   
REMARK 500    PRO A  78       48.14   -109.52                                   
REMARK 500    THR A  79     -161.03   -103.32                                   
REMARK 500    GLU A 134      -88.24   -101.93                                   
REMARK 500    ASP A 142     -134.01     59.79                                   
REMARK 500    ASN A 257       42.75    -86.20                                   
REMARK 500    ASP A 343      -72.54   -105.71                                   
REMARK 500    VAL A 432      -68.69   -130.85                                   
REMARK 500    LEU A 458      -99.49   -121.58                                   
REMARK 500    GLU A 481       78.49     57.06                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH A 968        DISTANCE =  5.96 ANGSTROMS                       
REMARK 525    HOH A 969        DISTANCE =  5.98 ANGSTROMS                       
REMARK 525    HOH A 970        DISTANCE =  6.09 ANGSTROMS                       
REMARK 525    HOH A 971        DISTANCE =  6.63 ANGSTROMS                       
REMARK 525    HOH A 972        DISTANCE =  6.88 ANGSTROMS                       
REMARK 525    HOH A 973        DISTANCE =  7.07 ANGSTROMS                       
REMARK 525    HOH A 974        DISTANCE =  7.40 ANGSTROMS                       
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K A 501   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 VAL A 188   O                                                      
REMARK 620 2 LYS A 189   O    65.3                                              
REMARK 620 3 ALA A 191   O    83.9  77.3                                        
REMARK 620 4 GLY A 256   O   132.5 159.9 110.4                                  
REMARK 620 5 ILE A 258   O   141.0  78.1  74.8  85.9                            
REMARK 620 6 ILE A 261   O    97.2  78.2 152.4  89.2  87.9                      
REMARK 620 7 HOH A 764   O    75.4 134.3  76.3  65.6 128.3 130.9                
REMARK 620 N                    1     2     3     4     5     6                 
DBREF  8ZEX A    1   484  PDB    8ZEX     8ZEX             1    484             
SEQRES   1 A  484  MET GLY GLY SER HIS HIS HIS HIS HIS HIS GLY MET ALA          
SEQRES   2 A  484  SER MET THR GLY GLY GLN GLN MET GLY ARG ASP LEU TYR          
SEQRES   3 A  484  ASP ASP ASP ASP LYS ASP PRO SER SER ARG MET ALA GLU          
SEQRES   4 A  484  ILE GLY THR GLY PHE PRO PHE ASP PRO HIS TYR VAL GLU          
SEQRES   5 A  484  VAL LEU GLY GLU ARG MET HIS TYR VAL ASP VAL GLY PRO          
SEQRES   6 A  484  ARG ASP GLY THR PRO LEU LEU PHE LEU HIS GLY ASN PRO          
SEQRES   7 A  484  THR SER SER TYR VAL TRP ARG ASN ILE ILE PRO HIS VAL          
SEQRES   8 A  484  ALA PRO THR HIS ARG CYS ILE ALA PRO ASP LEU ILE GLY          
SEQRES   9 A  484  MET GLY LYS SER ASP LYS PRO ASP LEU GLY TYR PHE PHE          
SEQRES  10 A  484  ASP ASP HIS VAL ARG PHE MET ASP ALA PHE ILE GLU ALA          
SEQRES  11 A  484  LEU GLY LEU GLU GLU VAL VAL LEU VAL ILE HIS ASP TRP          
SEQRES  12 A  484  GLY SER ALA LEU GLY PHE HIS TRP ALA LYS ARG ASN PRO          
SEQRES  13 A  484  GLU ARG VAL LYS GLY ILE ALA PHE MET GLU PHE ILE ARG          
SEQRES  14 A  484  PRO ILE PRO THR TRP ASP GLU TRP PRO GLU PHE LEU VAL          
SEQRES  15 A  484  GLY PRO PHE ASN PHE VAL LYS ASP ALA GLY GLU LYS LEU          
SEQRES  16 A  484  TRP GLU ALA VAL THR GLY GLN HIS ASP LYS ASP ASP LEU          
SEQRES  17 A  484  ALA LYS LYS VAL TRP GLU HIS LEU HIS LYS THR GLY ILE          
SEQRES  18 A  484  PRO ASP ALA ASP LYS VAL ASN ILE GLN VAL ALA ASP GLY          
SEQRES  19 A  484  LYS ALA THR VAL ALA GLY ASP GLY LEU SER GLN GLU ALA          
SEQRES  20 A  484  LYS GLU LYS ILE LEU VAL ALA VAL GLY ASN ILE SER GLY          
SEQRES  21 A  484  ILE ALA SER VAL ASP ASP GLN VAL LYS THR ALA THR PRO          
SEQRES  22 A  484  ALA THR ALA SER GLN PHE TYR THR VAL LYS SER GLY ASP          
SEQRES  23 A  484  THR LEU SER ALA ILE SER ASN GLN VAL TYR GLY ASN ALA          
SEQRES  24 A  484  ASP LEU TYR ASN LYS ILE PHE GLU ALA ASN LYS PRO MET          
SEQRES  25 A  484  LEU LYS SER PRO ASP LYS ILE TYR PRO GLY GLN ALA LEU          
SEQRES  26 A  484  ARG ILE PRO TYR SER LEU ALA ARG GLU THR PHE GLN ALA          
SEQRES  27 A  484  PHE ARG THR THR ASP VAL GLY ARG LYS LEU ILE ILE ASP          
SEQRES  28 A  484  GLN ASN VAL PHE ILE GLU GLY THR LEU PRO MET GLY VAL          
SEQRES  29 A  484  VAL ARG PRO LEU THR GLU VAL GLU MET ASP HIS TYR ARG          
SEQRES  30 A  484  GLU PRO PHE LEU ASN PRO VAL ASP ARG GLU PRO LEU TRP          
SEQRES  31 A  484  ARG PHE PRO ASN GLU LEU PRO ILE ALA GLY GLU PRO ALA          
SEQRES  32 A  484  ASN ILE VAL ALA LEU VAL GLU GLU TYR MET ASP TRP LEU          
SEQRES  33 A  484  HIS GLN SER PRO VAL PRO LYS LEU LEU PHE TRP GLY THR          
SEQRES  34 A  484  PRO GLY VAL LEU ILE PRO PRO ALA GLU ALA ALA ARG LEU          
SEQRES  35 A  484  ALA LYS SER LEU PRO ASN CYS LYS ALA VAL ASP ILE GLY          
SEQRES  36 A  484  PRO GLY LEU ASN LEU LEU GLN GLU ASP ASN PRO ASP LEU          
SEQRES  37 A  484  ILE GLY SER GLU ILE ALA ARG TRP LEU SER THR LEU GLU          
SEQRES  38 A  484  ILE SER GLY                                                  
HET      K  A 501       1                                                       
HETNAM       K POTASSIUM ION                                                    
FORMUL   2    K    K 1+                                                         
FORMUL   3  HOH   *374(H2 O)                                                    
HELIX    1 AA1 SER A   80  ARG A   85  5                                   6    
HELIX    2 AA2 ILE A   87  ALA A   92  1                                   6    
HELIX    3 AA3 PHE A  116  LEU A  131  1                                  16    
HELIX    4 AA4 ASP A  142  ASN A  155  1                                  14    
HELIX    5 AA5 THR A  173  TRP A  177  5                                   5    
HELIX    6 AA6 ASP A  207  THR A  219  1                                  13    
HELIX    7 AA7 ASP A  223  ASP A  225  5                                   3    
HELIX    8 AA8 SER A  244  ASN A  257  1                                  14    
HELIX    9 AA9 THR A  287  GLY A  297  1                                  11    
HELIX   10 AB1 ASN A  298  ASP A  300  5                                   3    
HELIX   11 AB2 LEU A  301  ASN A  309  1                                   9    
HELIX   12 AB3 SER A  315  ILE A  319  5                                   5    
HELIX   13 AB4 ALA A  332  ARG A  340  1                                   9    
HELIX   14 AB5 ASP A  343  ILE A  350  1                                   8    
HELIX   15 AB6 ASN A  353  GLY A  358  1                                   6    
HELIX   16 AB7 LEU A  360  VAL A  364  5                                   5    
HELIX   17 AB8 THR A  369  GLU A  378  1                                  10    
HELIX   18 AB9 PRO A  379  LEU A  381  5                                   3    
HELIX   19 AC1 ASN A  382  ASP A  385  5                                   4    
HELIX   20 AC2 ARG A  386  LEU A  396  1                                  11    
HELIX   21 AC3 PRO A  402  SER A  419  1                                  18    
HELIX   22 AC4 PRO A  435  LEU A  446  1                                  12    
HELIX   23 AC5 LEU A  460  ASN A  465  1                                   6    
HELIX   24 AC6 ASN A  465  SER A  478  1                                  14    
SHEET    1 AA1 8 HIS A  49  VAL A  53  0                                        
SHEET    2 AA1 8 GLU A  56  VAL A  63 -1  O  GLU A  56   N  VAL A  53           
SHEET    3 AA1 8 CYS A  97  PRO A 100 -1  O  CYS A  97   N  VAL A  63           
SHEET    4 AA1 8 LEU A  71  LEU A  74  1  N  LEU A  71   O  ILE A  98           
SHEET    5 AA1 8 VAL A 136  HIS A 141  1  O  VAL A 137   N  LEU A  72           
SHEET    6 AA1 8 VAL A 159  MET A 165  1  O  ALA A 163   N  LEU A 138           
SHEET    7 AA1 8 LYS A 423  PRO A 430  1  O  LEU A 424   N  PHE A 164           
SHEET    8 AA1 8 CYS A 449  GLY A 457  1  O  VAL A 452   N  LEU A 425           
SHEET    1 AA2 4 PHE A 185  ASN A 186  0                                        
SHEET    2 AA2 4 SER A 263  THR A 270 -1  O  VAL A 264   N  PHE A 185           
SHEET    3 AA2 4 LYS A 235  LEU A 243  1  N  ALA A 236   O  ASP A 265           
SHEET    4 AA2 4 VAL A 227  ALA A 232 -1  N  GLN A 230   O  THR A 237           
SHEET    1 AA3 2 SER A 277  THR A 281  0                                        
SHEET    2 AA3 2 ALA A 324  PRO A 328 -1  O  ILE A 327   N  GLN A 278           
LINK         O   VAL A 188                 K     K A 501     1555   1555  2.85  
LINK         O   LYS A 189                 K     K A 501     1555   1555  3.13  
LINK         O   ALA A 191                 K     K A 501     1555   1555  2.81  
LINK         O   GLY A 256                 K     K A 501     1555   1555  2.64  
LINK         O   ILE A 258                 K     K A 501     1555   1555  2.84  
LINK         O   ILE A 261                 K     K A 501     1555   1555  2.84  
LINK         K     K A 501                 O   HOH A 764     1555   1555  3.16  
CISPEP   1 ASN A   77    PRO A   78          0         1.73                     
CISPEP   2 GLY A  183    PRO A  184          0         1.75                     
CISPEP   3 LYS A  310    PRO A  311          0         1.44                     
CISPEP   4 GLU A  401    PRO A  402          0        -8.83                     
CISPEP   5 THR A  429    PRO A  430          0         5.79                     
CRYST1   44.590   50.280   58.830  94.00 101.32  99.97 P 1           1          
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      0.022427  0.003942  0.004941        0.00000                         
SCALE2      0.000000  0.020194  0.002182        0.00000                         
SCALE3      0.000000  0.000000  0.017436        0.00000