PDB Short entry for 4GKC
HEADER    TRANSPORT PROTEIN                       10-AUG-12   4GKC              
TITLE     CRYSTAL STRUCTURE OF Q108K:K40L:T51V:T53C:R58W:T29L:Y19W:Q4A MUTANT OF
TITLE    2 CELLULAR RETINOL BINDING PROTEIN II COMPLEX WITH ALL-TRANS-RETINAL AT
TITLE    3 1.33                                                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: RETINOL-BINDING PROTEIN 2;                                 
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: CELLULAR RETINOL-BINDING PROTEIN II, CRBP-II;               
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: RBP2, CRBP2;                                                   
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PET17                                     
KEYWDS    RETINAL COMPLEX+ BETA BARREL, TRANSPORT PROTEIN                       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Z.NOSSONI,J.H.GEIGER                                                  
REVDAT   3   13-SEP-23 4GKC    1       REMARK SEQADV LINK                       
REVDAT   2   24-JAN-18 4GKC    1       AUTHOR REMARK                            
REVDAT   1   26-DEC-12 4GKC    0                                                
JRNL        AUTH   W.WANG,Z.NOSSONI,T.BERBASOVA,C.T.WATSON,I.YAPICI,K.S.LEE,    
JRNL        AUTH 2 C.VASILEIOU,J.H.GEIGER,B.BORHAN                              
JRNL        TITL   TUNING THE ELECTRONIC ABSORPTION OF PROTEIN-EMBEDDED         
JRNL        TITL 2 ALL-TRANS-RETINAL.                                           
JRNL        REF    SCIENCE                       V. 338  1340 2012              
JRNL        REFN                   ISSN 0036-8075                               
JRNL        PMID   23224553                                                     
JRNL        DOI    10.1126/SCIENCE.1226135                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.30 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0109                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.30                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 28.12                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 86.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 50433                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.189                           
REMARK   3   R VALUE            (WORKING SET) : 0.187                           
REMARK   3   FREE R VALUE                     : 0.225                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2670                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.30                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.33                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 2926                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 68.40                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2900                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 158                          
REMARK   3   BIN FREE R VALUE                    : 0.3720                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2187                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 40                                      
REMARK   3   SOLVENT ATOMS            : 354                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 18.61                          
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.067         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.071         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.037         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.831         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.959                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.939                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2331 ; 0.029 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  3157 ; 2.491 ; 1.941       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   278 ; 6.950 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   119 ;37.828 ;25.126       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   422 ;13.281 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    12 ;19.299 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   336 ; 0.141 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1790 ; 0.014 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  1352 ; 1.581 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2191 ; 2.682 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   979 ; 3.817 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   966 ; 5.880 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 4GKC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 29-AUG-12.                  
REMARK 100 THE DEPOSITION ID IS D_1000074291.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 200                                
REMARK 200  PH                             : 4.6                                
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 21-ID-D                            
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.1272                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MAR300                             
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 50433                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.300                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 28.122                             
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: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: 2RCQ                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 40.69                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.07                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 40% PEG 4000, 0.1M CH3COONA.3H2O, 0.1    
REMARK 280  M CH3COONH4, EVAPORATION, TEMPERATURE 298K, PH 4.6                  
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, 2                                                    
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 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     ASP A 113    CG   OD1  OD2                                       
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     SER B   12   N    CA   C    O    CB   OG                         
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   367     O    HOH A   461              1.62            
REMARK 500   O    GLY A   112     O    HOH A   401              1.63            
REMARK 500   O    HOH A   412     O    HOH A   460              1.75            
REMARK 500   O    HOH B   340     O    HOH B   423              1.82            
REMARK 500   O    HOH B   404     O    HOH B   459              1.85            
REMARK 500   O    HOH B   357     O    HOH B   463              1.97            
REMARK 500   O    ASP A    26     O    HOH A   455              2.03            
REMARK 500   OH   TYR A    60     O    HOH A   461              2.04            
REMARK 500   OE1  GLU A    17     O    HOH A   417              2.10            
REMARK 500   O    HOH B   369     O    HOH B   473              2.10            
REMARK 500   O    HOH A   432     O    HOH A   454              2.10            
REMARK 500   O    HOH B   421     O    HOH B   427              2.12            
REMARK 500   OH   TYR B    60     O    HOH B   459              2.13            
REMARK 500   O    HOH A   306     O    HOH A   424              2.14            
REMARK 500   CD   GLU B   111     O    HOH B   477              2.14            
REMARK 500   O    HOH A   405     O    HOH A   424              2.15            
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   C    LYS A   133     O    HOH A   437     1545     1.35            
REMARK 500   C    LYS B   133     O    HOH B   368     1645     1.53            
REMARK 500   NZ   LYS A    21     O    HOH A   469     1565     1.75            
REMARK 500   O    HOH A   462     O    HOH B   381     1556     1.93            
REMARK 500   O    HOH A   442     O    HOH B   430     1556     2.01            
REMARK 500   CE   LYS A   132     O    HOH A   389     1545     2.05            
REMARK 500   O    HOH B   441     O    HOH B   444     1455     2.15            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    ARG A   2   CZ    ARG A   2   NH2     0.080                       
REMARK 500    GLU B  11   CB    GLU B  11   CG     -0.155                       
REMARK 500    TRP B  88   CE3   TRP B  88   CZ3     0.102                       
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    PHE A  16   CB  -  CG  -  CD2 ANGL. DEV. =  -4.2 DEGREES          
REMARK 500    ARG A  30   NE  -  CZ  -  NH1 ANGL. DEV. =  10.5 DEGREES          
REMARK 500    ARG A  30   NE  -  CZ  -  NH2 ANGL. DEV. = -12.9 DEGREES          
REMARK 500    ASP A  47   CB  -  CG  -  OD2 ANGL. DEV. =   7.2 DEGREES          
REMARK 500    ARG A 104   NE  -  CZ  -  NH1 ANGL. DEV. =   4.1 DEGREES          
REMARK 500    ARG B  30   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.0 DEGREES          
REMARK 500    ASP B  47   CB  -  CG  -  OD2 ANGL. DEV. =   6.0 DEGREES          
REMARK 500    GLU B  69   OE1 -  CD  -  OE2 ANGL. DEV. =   7.8 DEGREES          
REMARK 500    ASP B  71   CB  -  CG  -  OD1 ANGL. DEV. =   6.2 DEGREES          
REMARK 500    TYR B  73   CZ  -  CE2 -  CD2 ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    ASP B 123   CB  -  CG  -  OD1 ANGL. DEV. =   6.6 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    LEU A  77     -107.61   -113.65                                   
REMARK 500    TRP B  58      113.37   -168.38                                   
REMARK 500    LEU B  77     -110.16   -108.50                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 PHE B   57     TRP B   58                 -139.59                    
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 RET A 201                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE RET B 201                 
DBREF  4GKC A    1   133  UNP    P50120   RET2_HUMAN       2    134             
DBREF  4GKC B    1   133  UNP    P50120   RET2_HUMAN       2    134             
SEQADV 4GKC ALA A    4  UNP  P50120    GLN     5 ENGINEERED MUTATION            
SEQADV 4GKC TRP A   19  UNP  P50120    TYR    20 ENGINEERED MUTATION            
SEQADV 4GKC LEU A   29  UNP  P50120    THR    30 ENGINEERED MUTATION            
SEQADV 4GKC LEU A   40  UNP  P50120    LYS    41 ENGINEERED MUTATION            
SEQADV 4GKC VAL A   51  UNP  P50120    THR    52 ENGINEERED MUTATION            
SEQADV 4GKC CYS A   53  UNP  P50120    THR    54 ENGINEERED MUTATION            
SEQADV 4GKC TRP A   58  UNP  P50120    ARG    59 ENGINEERED MUTATION            
SEQADV 4GKC LYS A  108  UNP  P50120    GLN   109 ENGINEERED MUTATION            
SEQADV 4GKC ALA B    4  UNP  P50120    GLN     5 ENGINEERED MUTATION            
SEQADV 4GKC TRP B   19  UNP  P50120    TYR    20 ENGINEERED MUTATION            
SEQADV 4GKC LEU B   29  UNP  P50120    THR    30 ENGINEERED MUTATION            
SEQADV 4GKC LEU B   40  UNP  P50120    LYS    41 ENGINEERED MUTATION            
SEQADV 4GKC VAL B   51  UNP  P50120    THR    52 ENGINEERED MUTATION            
SEQADV 4GKC CYS B   53  UNP  P50120    THR    54 ENGINEERED MUTATION            
SEQADV 4GKC TRP B   58  UNP  P50120    ARG    59 ENGINEERED MUTATION            
SEQADV 4GKC LYS B  108  UNP  P50120    GLN   109 ENGINEERED MUTATION            
SEQRES   1 A  133  THR ARG ASP ALA ASN GLY THR TRP GLU MET GLU SER ASN          
SEQRES   2 A  133  GLU ASN PHE GLU GLY TRP MET LYS ALA LEU ASP ILE ASP          
SEQRES   3 A  133  PHE ALA LEU ARG LYS ILE ALA VAL ARG LEU THR GLN THR          
SEQRES   4 A  133  LEU VAL ILE ASP GLN ASP GLY ASP ASN PHE LYS VAL LYS          
SEQRES   5 A  133  CYS THR SER THR PHE TRP ASN TYR ASP VAL ASP PHE THR          
SEQRES   6 A  133  VAL GLY VAL GLU PHE ASP GLU TYR THR LYS SER LEU ASP          
SEQRES   7 A  133  ASN ARG HIS VAL LYS ALA LEU VAL THR TRP GLU GLY ASP          
SEQRES   8 A  133  VAL LEU VAL CYS VAL GLN LYS GLY GLU LYS GLU ASN ARG          
SEQRES   9 A  133  GLY TRP LYS LYS TRP ILE GLU GLY ASP LYS LEU TYR LEU          
SEQRES  10 A  133  GLU LEU THR CYS GLY ASP GLN VAL CYS ARG GLN VAL PHE          
SEQRES  11 A  133  LYS LYS LYS                                                  
SEQRES   1 B  133  THR ARG ASP ALA ASN GLY THR TRP GLU MET GLU SER ASN          
SEQRES   2 B  133  GLU ASN PHE GLU GLY TRP MET LYS ALA LEU ASP ILE ASP          
SEQRES   3 B  133  PHE ALA LEU ARG LYS ILE ALA VAL ARG LEU THR GLN THR          
SEQRES   4 B  133  LEU VAL ILE ASP GLN ASP GLY ASP ASN PHE LYS VAL LYS          
SEQRES   5 B  133  CYS THR SER THR PHE TRP ASN TYR ASP VAL ASP PHE THR          
SEQRES   6 B  133  VAL GLY VAL GLU PHE ASP GLU TYR THR LYS SER LEU ASP          
SEQRES   7 B  133  ASN ARG HIS VAL LYS ALA LEU VAL THR TRP GLU GLY ASP          
SEQRES   8 B  133  VAL LEU VAL CYS VAL GLN LYS GLY GLU LYS GLU ASN ARG          
SEQRES   9 B  133  GLY TRP LYS LYS TRP ILE GLU GLY ASP LYS LEU TYR LEU          
SEQRES  10 B  133  GLU LEU THR CYS GLY ASP GLN VAL CYS ARG GLN VAL PHE          
SEQRES  11 B  133  LYS LYS LYS                                                  
HET    RET  A 201      20                                                       
HET    RET  B 201      20                                                       
HETNAM     RET RETINAL                                                          
FORMUL   3  RET    2(C20 H28 O)                                                 
FORMUL   5  HOH   *354(H2 O)                                                    
HELIX    1   1 ASN A   15  LEU A   23  1                                   9    
HELIX    2   2 ASP A   26  VAL A   34  1                                   9    
HELIX    3   3 ASN B   15  LEU B   23  1                                   9    
HELIX    4   4 ASP B   26  VAL B   34  1                                   9    
SHEET    1   A10 TYR A  60  THR A  65  0                                        
SHEET    2   A10 ASN A  48  THR A  54 -1  N  CYS A  53   O  TYR A  60           
SHEET    3   A10 THR A  39  ASP A  45 -1  N  ASP A  45   O  ASN A  48           
SHEET    4   A10 GLY A   6  GLU A  14 -1  N  TRP A   8   O  LEU A  40           
SHEET    5   A10 GLN A 124  LYS A 132 -1  O  VAL A 129   N  GLU A  11           
SHEET    6   A10 LYS A 114  CYS A 121 -1  N  LEU A 117   O  GLN A 128           
SHEET    7   A10 GLY A 105  GLU A 111 -1  N  GLU A 111   O  LYS A 114           
SHEET    8   A10 VAL A  92  LYS A  98 -1  N  CYS A  95   O  TRP A 106           
SHEET    9   A10 HIS A  81  GLU A  89 -1  N  THR A  87   O  VAL A  94           
SHEET   10   A10 PHE A  70  TYR A  73 -1  N  PHE A  70   O  ALA A  84           
SHEET    1   B10 TYR B  60  THR B  65  0                                        
SHEET    2   B10 ASN B  48  THR B  54 -1  N  PHE B  49   O  PHE B  64           
SHEET    3   B10 THR B  39  ASP B  45 -1  N  THR B  39   O  THR B  54           
SHEET    4   B10 GLY B   6  GLU B  14 -1  N  TRP B   8   O  LEU B  40           
SHEET    5   B10 GLN B 124  LYS B 132 -1  O  VAL B 129   N  GLU B  11           
SHEET    6   B10 LYS B 114  CYS B 121 -1  N  LEU B 117   O  GLN B 128           
SHEET    7   B10 GLY B 105  GLU B 111 -1  N  GLU B 111   O  LYS B 114           
SHEET    8   B10 VAL B  92  LYS B  98 -1  N  LEU B  93   O  LYS B 108           
SHEET    9   B10 HIS B  81  GLU B  89 -1  N  THR B  87   O  VAL B  94           
SHEET   10   B10 PHE B  70  TYR B  73 -1  N  PHE B  70   O  ALA B  84           
LINK         NZ  LYS A 108                 C15 RET A 201     1555   1555  1.24  
LINK         NZ  LYS B 108                 C15 RET B 201     1555   1555  1.24  
SITE     1 AC1  9 TRP A  19  ALA A  33  GLN A  38  TRP A  58                    
SITE     2 AC1  9 ASN A  59  TYR A  60  LEU A  77  TRP A 106                    
SITE     3 AC1  9 LYS A 108                                                     
SITE     1 AC2  8 ALA B  33  GLN B  38  TRP B  58  LEU B  77                    
SITE     2 AC2  8 TRP B 106  LYS B 108  HOH B 341  HOH B 391                    
CRYST1   30.970   36.002   64.016  86.10  86.46  65.32 P 1           2          
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      0.032289 -0.014838 -0.001308        0.00000                         
SCALE2      0.000000  0.030569 -0.001425        0.00000                         
SCALE3      0.000000  0.000000  0.015668        0.00000