HEADER    PHOTORECEPTOR                           26-JUL-97   1AP9              
TITLE     X-RAY STRUCTURE OF BACTERIORHODOPSIN FROM MICROCRYSTALS GROWN IN      
TITLE    2 LIPIDIC CUBIC PHASES                                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: BACTERIORHODOPSIN;                                         
COMPND   3 CHAIN: A;                                                            
COMPND   4 OTHER_DETAILS: RETINAL LINKED TO LYS 216 VIA A SCHIFF BASE           
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HALOBACTERIUM SALINARUM;                        
SOURCE   3 ORGANISM_TAXID: 2242;                                                
SOURCE   4 STRAIN: S9;                                                          
SOURCE   5 CELLULAR_LOCATION: PLASMA MEMBRANE                                   
KEYWDS    PHOTORECEPTOR, PROTON PUMP, MEMBRANE PROTEIN, RETINAL PROTEIN,        
KEYWDS   2 MICROCRYSTALS, MICROFOCUS BEAM, LIPIDIC CUBIC PHASES                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    E.PEBAY-PEYROULA,G.RUMMEL,J.P.ROSENBUSCH,E.M.LANDAU                   
REVDAT   5   13-NOV-24 1AP9    1       REMARK                                   
REVDAT   4   02-AUG-23 1AP9    1       REMARK LINK                              
REVDAT   3   13-JUL-11 1AP9    1       VERSN                                    
REVDAT   2   24-FEB-09 1AP9    1       VERSN                                    
REVDAT   1   16-SEP-98 1AP9    0                                                
JRNL        AUTH   E.PEBAY-PEYROULA,G.RUMMEL,J.P.ROSENBUSCH,E.M.LANDAU          
JRNL        TITL   X-RAY STRUCTURE OF BACTERIORHODOPSIN AT 2.5 ANGSTROMS FROM   
JRNL        TITL 2 MICROCRYSTALS GROWN IN LIPIDIC CUBIC PHASES.                 
JRNL        REF    SCIENCE                       V. 277  1676 1997              
JRNL        REFN                   ISSN 0036-8075                               
JRNL        PMID   9287223                                                      
JRNL        DOI    10.1126/SCIENCE.277.5332.1676                                
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   E.M.LANDAU,G.RUMMEL,S.W.COWAN-JACOB,J.P.ROSENBUSCH           
REMARK   1  TITL   CRYSTALLISATION OF A POLAR PROTEIN AND SMALL MOLECULES FROM  
REMARK   1  TITL 2 THE AQUEOUS COMPARTMENT OF LIPIDIC CUBIC PHASES              
REMARK   1  REF    J.PHYS.CHEM.B                 V. 101  1935 1997              
REMARK   1  REFN                   ISSN 1089-5647                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.35 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.8                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.35                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 5.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.500                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 10000000.000                   
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0010                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 77.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 6564                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.258                           
REMARK   3   FREE R VALUE                     : 0.317                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 300                             
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           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.35                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.48                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 67.00                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 957                          
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3947                       
REMARK   3   BIN FREE R VALUE                    : 0.3840                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 49                           
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            : 1694                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 20                                      
REMARK   3   SOLVENT ATOMS            : 26                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 45.50                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 75.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.00000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.00000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.40                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.62                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.51                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.76                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.008                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.491                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 20.82                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.188                           
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  : PARHCSDX.PRO                                   
REMARK   3  PARAMETER FILE  2  : PARAM19.SOL                                    
REMARK   3  PARAMETER FILE  3  : RETINAL.PAR                                    
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPHCSDX.PRO                                   
REMARK   3  TOPOLOGY FILE  2   : RETINAL.TOP                                    
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1AP9 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_1000171089.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : AUG-96                             
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               : ESRF                               
REMARK 200  BEAMLINE                       : ID13                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.688                              
REMARK 200  MONOCHROMATOR                  : SI(111)                            
REMARK 200  OPTICS                         : ELLIPSOIDAL MIRROR                 
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : CCP4                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 8045                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.350                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 10.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 91.2                               
REMARK 200  DATA REDUNDANCY                : 2.000                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.10000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 4.7000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.35                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.56                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 90.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.60                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.26600                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.400                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: X-PLOR 3.8                                            
REMARK 200 STARTING MODEL: PDB ENTRY 2BRD                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 48.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.39                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PROTEIN FROM THE PURPLE MEMBRANE WAS     
REMARK 280  DELIPIDATED AND SOLUBILIZED IN OCTYL GLUCOSIDE. PROTEIN WAS         
REMARK 280  CRYSTALLIZED FROM 60 - 70% (W/W) MONOOLEIN, 0.7 - 4.0 M NA/K -      
REMARK 280  PHOSPHATE IN A PHOSPHATE BUFFER AT PH 5.6, AT 20C AND IN THE        
REMARK 280  DARK. THE MIXTURE WAS CENTRIFUGED AT 10000G FOR 150 MN PRIOR TO     
REMARK 280  CRYSTALLISATION.                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63                             
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z                                                
REMARK 290       3555   -X+Y,-X,Z                                               
REMARK 290       4555   -X,-Y,Z+1/2                                             
REMARK 290       5555   Y,-X+Y,Z+1/2                                            
REMARK 290       6555   X-Y,X,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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  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       52.08000            
REMARK 290   SMTRY1   5  0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   5 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       52.08000            
REMARK 290   SMTRY1   6  0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       52.08000            
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: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 6840 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 29080 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -56.0 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 -0.500000 -0.866025  0.000000       30.88000            
REMARK 350   BIOMT2   2  0.866025 -0.500000  0.000000       53.48573            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3 -0.500000  0.866025  0.000000      -30.88000            
REMARK 350   BIOMT2   3 -0.866025 -0.500000  0.000000       53.48573            
REMARK 350   BIOMT3   3  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     GLN A     1                                                      
REMARK 465     ALA A     2                                                      
REMARK 465     GLN A     3                                                      
REMARK 465     ILE A     4                                                      
REMARK 465     THR A     5                                                      
REMARK 465     GLY A     6                                                      
REMARK 465     SER A   226                                                      
REMARK 465     ARG A   227                                                      
REMARK 465     ALA A   228                                                      
REMARK 465     ILE A   229                                                      
REMARK 465     PHE A   230                                                      
REMARK 465     GLY A   231                                                      
REMARK 465     GLU A   232                                                      
REMARK 465     ALA A   233                                                      
REMARK 465     GLU A   234                                                      
REMARK 465     ALA A   235                                                      
REMARK 465     PRO A   236                                                      
REMARK 465     GLU A   237                                                      
REMARK 465     PRO A   238                                                      
REMARK 465     SER A   239                                                      
REMARK 465     ALA A   240                                                      
REMARK 465     GLY A   241                                                      
REMARK 465     ASP A   242                                                      
REMARK 465     GLY A   243                                                      
REMARK 465     ALA A   244                                                      
REMARK 465     ALA A   245                                                      
REMARK 465     ALA A   246                                                      
REMARK 465     THR A   247                                                      
REMARK 465     SER A   248                                                      
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     ARG A   7    CD   NE   CZ   NH1  NH2                             
REMARK 470     ARG A 225    O                                                   
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    LEU A  22      -53.18   -166.65                                   
REMARK 500    VAL A  34       90.28    -68.18                                   
REMARK 500    THR A  47      -24.17   -164.30                                   
REMARK 500    LEU A  66      -62.51   -152.50                                   
REMARK 500    THR A  67      101.83    -12.77                                   
REMARK 500    MET A  68      170.56    -40.73                                   
REMARK 500    VAL A  69     -148.12   -120.70                                   
REMARK 500    PRO A  70       97.78    -56.67                                   
REMARK 500    PHE A  71      107.80     62.88                                   
REMARK 500    GLN A  75      -81.16   -154.79                                   
REMARK 500    ASN A  76       99.79    -37.94                                   
REMARK 500    THR A  89      -49.50   -147.88                                   
REMARK 500    THR A 128     -147.78     60.08                                   
REMARK 500    LYS A 129       38.26   -168.29                                   
REMARK 500    VAL A 130       90.09    -45.90                                   
REMARK 500    TYR A 131      -10.18     57.79                                   
REMARK 500    PHE A 153       35.21    -94.90                                   
REMARK 500    PHE A 154      -63.21   -144.46                                   
REMARK 500    SER A 158       22.13    -77.19                                   
REMARK 500    LYS A 159      -10.96   -151.23                                   
REMARK 500    GLU A 161      -75.83    174.52                                   
REMARK 500    MET A 163       -7.29     65.81                                   
REMARK 500    VAL A 167        3.08    -58.95                                   
REMARK 500    LEU A 190       26.47    -78.92                                   
REMARK 500    ALA A 196     -105.38    -73.29                                   
REMARK 500    ILE A 198      -62.86    -90.72                                   
REMARK 500    PRO A 200     -132.71    -42.49                                   
REMARK 500    LEU A 224      -34.95   -166.34                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: SFF                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: SCHIFF BASE                                        
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE RET A 300                 
DBREF  1AP9 A    1   248  UNP    P02945   BACR_HALN1      14    261             
SEQRES   1 A  248  GLN ALA GLN ILE THR GLY ARG PRO GLU TRP ILE TRP LEU          
SEQRES   2 A  248  ALA LEU GLY THR ALA LEU MET GLY LEU GLY THR LEU TYR          
SEQRES   3 A  248  PHE LEU VAL LYS GLY MET GLY VAL SER ASP PRO ASP ALA          
SEQRES   4 A  248  LYS LYS PHE TYR ALA ILE THR THR LEU VAL PRO ALA ILE          
SEQRES   5 A  248  ALA PHE THR MET TYR LEU SER MET LEU LEU GLY TYR GLY          
SEQRES   6 A  248  LEU THR MET VAL PRO PHE GLY GLY GLU GLN ASN PRO ILE          
SEQRES   7 A  248  TYR TRP ALA ARG TYR ALA ASP TRP LEU PHE THR THR PRO          
SEQRES   8 A  248  LEU LEU LEU LEU ASP LEU ALA LEU LEU VAL ASP ALA ASP          
SEQRES   9 A  248  GLN GLY THR ILE LEU ALA LEU VAL GLY ALA ASP GLY ILE          
SEQRES  10 A  248  MET ILE GLY THR GLY LEU VAL GLY ALA LEU THR LYS VAL          
SEQRES  11 A  248  TYR SER TYR ARG PHE VAL TRP TRP ALA ILE SER THR ALA          
SEQRES  12 A  248  ALA MET LEU TYR ILE LEU TYR VAL LEU PHE PHE GLY PHE          
SEQRES  13 A  248  THR SER LYS ALA GLU SER MET ARG PRO GLU VAL ALA SER          
SEQRES  14 A  248  THR PHE LYS VAL LEU ARG ASN VAL THR VAL VAL LEU TRP          
SEQRES  15 A  248  SER ALA TYR PRO VAL VAL TRP LEU ILE GLY SER GLU GLY          
SEQRES  16 A  248  ALA GLY ILE VAL PRO LEU ASN ILE GLU THR LEU LEU PHE          
SEQRES  17 A  248  MET VAL LEU ASP VAL SER ALA LYS VAL GLY PHE GLY LEU          
SEQRES  18 A  248  ILE LEU LEU ARG SER ARG ALA ILE PHE GLY GLU ALA GLU          
SEQRES  19 A  248  ALA PRO GLU PRO SER ALA GLY ASP GLY ALA ALA ALA THR          
SEQRES  20 A  248  SER                                                          
HET    RET  A 300      20                                                       
HETNAM     RET RETINAL                                                          
FORMUL   2  RET    C20 H28 O                                                    
FORMUL   3  HOH   *26(H2 O)                                                     
HELIX    1  A1 TRP A   10  MET A   20  1                                  11    
HELIX    2  A2 GLY A   23  LYS A   30  1                                   8    
HELIX    3   B PRO A   37  LEU A   61  1                                  25    
HELIX    4  C1 TYR A   83  TRP A   86  1                                   4    
HELIX    5  C2 THR A   90  LEU A   93  1                                   4    
HELIX    6   D GLN A  105  ALA A  126  1                                  22    
HELIX    7   E ARG A  134  LEU A  152  1                                  19    
HELIX    8  F1 GLU A  166  SER A  169  1                                   4    
HELIX    9  F2 LYS A  172  TRP A  189  1                                  18    
HELIX   10   G ASN A  202  GLY A  220  1                                  19    
LINK         NZ  LYS A 216                 C15 RET A 300     1555   1555  1.26  
SITE     1 SFF  1 LYS A 216                                                     
SITE     1 AC1 13 TYR A  83  TRP A  86  THR A  89  THR A  90                    
SITE     2 AC1 13 MET A 118  ILE A 119  TRP A 138  SER A 141                    
SITE     3 AC1 13 MET A 145  TRP A 182  TYR A 185  ASP A 212                    
SITE     4 AC1 13 LYS A 216                                                     
CRYST1   61.760   61.760  104.160  90.00  90.00 120.00 P 63          6          
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      0.016192  0.009348  0.000000        0.00000                         
SCALE2      0.000000  0.018697  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009601        0.00000