PDB Short entry for 1XCA
HEADER    RETINOIC ACID TRANSPORT                 31-DEC-96   1XCA              
TITLE     APO-CELLULAR RETINOIC ACID BINDING PROTEIN II                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CELLULAR RETINOIC ACID BINDING PROTEIN TYPE II;            
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 CELL_LINE: BL21;                                                     
SOURCE   6 CELLULAR_LOCATION: CYTOPLASM;                                        
SOURCE   7 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   8 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   9 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3) PLYSS;                          
SOURCE  10 EXPRESSION_SYSTEM_CELLULAR_LOCATION: CYTOPLASM;                      
SOURCE  11 EXPRESSION_SYSTEM_VECTOR: PET-17B;                                   
SOURCE  12 EXPRESSION_SYSTEM_PLASMID: BL21                                      
KEYWDS    RETINOIC ACID TRANSPORT, CRABPII, RETINOIC ACID, LIGAND ENTRY,        
KEYWDS   2 VITAMIN A                                                            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    X.CHEN,X.JI                                                           
REVDAT   6   30-AUG-23 1XCA    1       AUTHOR JRNL                              
REVDAT   5   09-AUG-23 1XCA    1       REMARK                                   
REVDAT   4   03-NOV-21 1XCA    1       SEQADV                                   
REVDAT   3   11-DEC-19 1XCA    1       REMARK                                   
REVDAT   2   24-FEB-09 1XCA    1       VERSN                                    
REVDAT   1   01-JUL-98 1XCA    0                                                
JRNL        AUTH   X.CHEN,M.TORDOVA,G.L.GILLILAND,L.WANG,Y.LI,H.YAN,X.JI        
JRNL        TITL   CRYSTAL STRUCTURE OF APO-CELLULAR RETINOIC ACID-BINDING      
JRNL        TITL 2 PROTEIN TYPE II (R111M) SUGGESTS A MECHANISM OF LIGAND       
JRNL        TITL 3 ENTRY.                                                       
JRNL        REF    J.MOL.BIOL.                   V. 278   641 1998              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   9600845                                                      
JRNL        DOI    10.1006/JMBI.1998.1734                                       
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   J.R.THOMPSON,J.M.BRATT,L.J.BANASZAK                          
REMARK   1  TITL   CRYSTAL STRUCTURE OF CELLULAR RETINOIC ACID BINDING PROTEIN  
REMARK   1  TITL 2 I SHOWS INCREASED ACCESS TO THE BINDING CAVITY DUE TO        
REMARK   1  TITL 3 FORMATION OF AN INTERMOLECULAR BETA-SHEET                    
REMARK   1  REF    J.MOL.BIOL.                   V. 252   433 1995              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   G.J.KLEYWEGT,T.BERGFORS,H.SENN,P.LE MOTTE,B.GSELL,K.SHUDO,   
REMARK   1  AUTH 2 T.A.JONES                                                    
REMARK   1  TITL   CRYSTAL STRUCTURES OF CELLULAR RETINOIC ACID BINDING         
REMARK   1  TITL 2 PROTEINS I AND II IN COMPLEX WITH ALL-TRANS-RETINOIC ACID    
REMARK   1  TITL 3 AND A SYNTHETIC RETINOID                                     
REMARK   1  REF    STRUCTURE                     V.   2  1241 1994              
REMARK   1  REFN                   ISSN 0969-2126                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.30 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.1                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 100000.000                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.1000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 85.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 10509                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT UNTIL LAST FEW       
REMARK   3                                      CYCLES                          
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.180                           
REMARK   3   FREE R VALUE                     : 0.282                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 1084                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.009                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 8                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.30                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.40                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 58.30                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 799                          
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3360                       
REMARK   3   BIN FREE R VALUE                    : 0.3910                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 6.42                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 99                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.039                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2176                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 287                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 57.50                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 37.60                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.240                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 27.80                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.060                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : UNRESTRAINED                              
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  : PARAM.H2O                                      
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPHCSDX.PRO                                   
REMARK   3  TOPOLOGY FILE  2   : TOPOL.H2O                                      
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  RESIDUES 24 - 37 OF CHAIN A WERE NOT OBSERVED AND NOT INCLUDED IN   
REMARK   3  THE REFINEMENT; RESTRAINTS BETWEEN THE TWO COPIES OF MOLECULES      
REMARK   3  WERE APPLIED DURING THE INITIAL STAGE OF THE REFINEMENT             
REMARK   3                                                                      
REMARK   3  THE DISORDERED REGION (RESIDUES 24 - 37 OF CHAIN A) WAS             
REMARK   3  MODELED STEREOCHEMICALLY.                                           
REMARK   4                                                                      
REMARK   4 1XCA 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_1000177247.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-APR-95                          
REMARK 200  TEMPERATURE           (KELVIN) : 298                                
REMARK 200  PH                             : 8.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU FR-D                        
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : GRAPHITE(002)                      
REMARK 200  OPTICS                         : COLLIMATOR                         
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : AREA DETECTOR                      
REMARK 200  DETECTOR MANUFACTURER          : SIEMENS                            
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XENGEN                             
REMARK 200  DATA SCALING SOFTWARE          : XENGEN                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 13213                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 81.9                               
REMARK 200  DATA REDUNDANCY                : 2.750                              
REMARK 200  R MERGE                    (I) : 0.08000                            
REMARK 200  R SYM                      (I) : 0.05900                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 10.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.28                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 55.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.64                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.27900                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: X-PLOR 3.1                                            
REMARK 200 STARTING MODEL: PDB ENTRY 1CBS WITH LIGAND AND SOLVENT MOLECULES     
REMARK 200  REMOVED                                                             
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 48.60                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.35                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PROTEIN CONC, 30MG/ML BUFFER 0.1M        
REMARK 280  TRIS, PH 8.0 SALT 0.2M SODIUM ACETATE PRECIPITANT 30% PEG 8000      
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 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 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 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    ASN A  25       87.30    -52.77                                   
REMARK 500    MET A  27      -37.12    142.22                                   
REMARK 500    VAL A  58       -0.16     62.58                                   
REMARK 500    GLU A  73     -130.94   -152.89                                   
REMARK 500    ASP A 126      -98.47     74.48                                   
REMARK 500    SER B  37      -74.55    -49.05                                   
REMARK 500    GLU B  46       78.00   -115.66                                   
REMARK 500    GLU B  73     -136.49   -130.92                                   
REMARK 500    LEU B 100      -77.95    -60.36                                   
REMARK 500    ASP B 116       48.49    -95.97                                   
REMARK 500    ASP B 126     -128.86     65.35                                   
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 404        DISTANCE =  6.06 ANGSTROMS                       
REMARK 525    HOH A 405        DISTANCE =  6.95 ANGSTROMS                       
REMARK 525    HOH A 420        DISTANCE =  9.07 ANGSTROMS                       
REMARK 525    HOH A 441        DISTANCE =  8.91 ANGSTROMS                       
REMARK 525    HOH A 470        DISTANCE =  6.56 ANGSTROMS                       
REMARK 525    HOH A 477        DISTANCE =  7.33 ANGSTROMS                       
REMARK 525    HOH A 483        DISTANCE =  6.53 ANGSTROMS                       
REMARK 525    HOH A 485        DISTANCE =  8.61 ANGSTROMS                       
REMARK 525    HOH B 246        DISTANCE =  7.40 ANGSTROMS                       
REMARK 525    HOH B 247        DISTANCE =  7.62 ANGSTROMS                       
REMARK 525    HOH B 262        DISTANCE =  6.35 ANGSTROMS                       
REMARK 525    HOH B 297        DISTANCE =  6.28 ANGSTROMS                       
REMARK 525    HOH B 326        DISTANCE =  7.09 ANGSTROMS                       
REMARK 525    HOH B 377        DISTANCE =  7.10 ANGSTROMS                       
REMARK 525    HOH B 409        DISTANCE =  5.96 ANGSTROMS                       
REMARK 525    HOH B 411        DISTANCE =  6.21 ANGSTROMS                       
REMARK 525    HOH B 415        DISTANCE =  6.21 ANGSTROMS                       
REMARK 525    HOH B 433        DISTANCE =  6.73 ANGSTROMS                       
REMARK 525    HOH B 435        DISTANCE =  6.94 ANGSTROMS                       
REMARK 525    HOH B 439        DISTANCE =  7.13 ANGSTROMS                       
REMARK 525    HOH B 443        DISTANCE =  7.96 ANGSTROMS                       
REMARK 525    HOH B 454        DISTANCE =  8.19 ANGSTROMS                       
REMARK 525    HOH B 456        DISTANCE =  7.58 ANGSTROMS                       
REMARK 525    HOH B 458        DISTANCE =  7.94 ANGSTROMS                       
REMARK 525    HOH B 459        DISTANCE =  7.17 ANGSTROMS                       
REMARK 525    HOH B 461        DISTANCE =  7.97 ANGSTROMS                       
REMARK 525    HOH B 463        DISTANCE =  6.85 ANGSTROMS                       
REMARK 525    HOH B 465        DISTANCE =  5.93 ANGSTROMS                       
REMARK 525    HOH B 469        DISTANCE =  6.22 ANGSTROMS                       
REMARK 525    HOH B 473        DISTANCE =  7.97 ANGSTROMS                       
REMARK 525    HOH B 474        DISTANCE =  6.10 ANGSTROMS                       
REMARK 525    HOH B 475        DISTANCE =  7.65 ANGSTROMS                       
REMARK 525    HOH B 476        DISTANCE =  8.79 ANGSTROMS                       
REMARK 525    HOH B 482        DISTANCE =  8.87 ANGSTROMS                       
REMARK 525    HOH B 487        DISTANCE =  6.02 ANGSTROMS                       
DBREF  1XCA A    1   137  UNP    P29373   RABP2_HUMAN      1    137             
DBREF  1XCA B    1   137  UNP    P29373   RABP2_HUMAN      1    137             
SEQADV 1XCA MET A  111  UNP  P29373    ARG   111 ENGINEERED MUTATION            
SEQADV 1XCA MET B  111  UNP  P29373    ARG   111 ENGINEERED MUTATION            
SEQRES   1 A  137  PRO ASN PHE SER GLY ASN TRP LYS ILE ILE ARG SER GLU          
SEQRES   2 A  137  ASN PHE GLU GLU LEU LEU LYS VAL LEU GLY VAL ASN VAL          
SEQRES   3 A  137  MET LEU ARG LYS ILE ALA VAL ALA ALA ALA SER LYS PRO          
SEQRES   4 A  137  ALA VAL GLU ILE LYS GLN GLU GLY ASP THR PHE TYR ILE          
SEQRES   5 A  137  LYS THR SER THR THR VAL ARG THR THR GLU ILE ASN PHE          
SEQRES   6 A  137  LYS VAL GLY GLU GLU PHE GLU GLU GLN THR VAL ASP GLY          
SEQRES   7 A  137  ARG PRO CYS LYS SER LEU VAL LYS TRP GLU SER GLU ASN          
SEQRES   8 A  137  LYS MET VAL CYS GLU GLN LYS LEU LEU LYS GLY GLU GLY          
SEQRES   9 A  137  PRO LYS THR SER TRP THR MET GLU LEU THR ASN ASP GLY          
SEQRES  10 A  137  GLU LEU ILE LEU THR MET THR ALA ASP ASP VAL VAL CYS          
SEQRES  11 A  137  THR ARG VAL TYR VAL ARG GLU                                  
SEQRES   1 B  137  PRO ASN PHE SER GLY ASN TRP LYS ILE ILE ARG SER GLU          
SEQRES   2 B  137  ASN PHE GLU GLU LEU LEU LYS VAL LEU GLY VAL ASN VAL          
SEQRES   3 B  137  MET LEU ARG LYS ILE ALA VAL ALA ALA ALA SER LYS PRO          
SEQRES   4 B  137  ALA VAL GLU ILE LYS GLN GLU GLY ASP THR PHE TYR ILE          
SEQRES   5 B  137  LYS THR SER THR THR VAL ARG THR THR GLU ILE ASN PHE          
SEQRES   6 B  137  LYS VAL GLY GLU GLU PHE GLU GLU GLN THR VAL ASP GLY          
SEQRES   7 B  137  ARG PRO CYS LYS SER LEU VAL LYS TRP GLU SER GLU ASN          
SEQRES   8 B  137  LYS MET VAL CYS GLU GLN LYS LEU LEU LYS GLY GLU GLY          
SEQRES   9 B  137  PRO LYS THR SER TRP THR MET GLU LEU THR ASN ASP GLY          
SEQRES  10 B  137  GLU LEU ILE LEU THR MET THR ALA ASP ASP VAL VAL CYS          
SEQRES  11 B  137  THR ARG VAL TYR VAL ARG GLU                                  
FORMUL   3  HOH   *287(H2 O)                                                    
HELIX    1   1 PHE A   15  LEU A   22  1                                   8    
HELIX    2   2 LEU A   28  LYS A   38  1                                  11    
HELIX    3   3 PHE B   15  LYS B   20  1                                   6    
HELIX    4   4 VAL B   26  ALA B   35  1                                  10    
SHEET    1   A10 THR A  60  LYS A  66  0                                        
SHEET    2   A10 THR A  49  SER A  55 -1  N  THR A  54   O  THR A  61           
SHEET    3   A10 ALA A  40  GLU A  46 -1  N  GLU A  46   O  THR A  49           
SHEET    4   A10 GLY A   5  GLU A  13 -1  N  TRP A   7   O  VAL A  41           
SHEET    5   A10 VAL A 128  ARG A 136 -1  N  VAL A 135   O  LYS A   8           
SHEET    6   A10 GLU A 118  ALA A 125 -1  N  ALA A 125   O  VAL A 128           
SHEET    7   A10 SER A 108  LEU A 113 -1  N  GLU A 112   O  ILE A 120           
SHEET    8   A10 LYS A  92  LEU A  99 -1  N  CYS A  95   O  TRP A 109           
SHEET    9   A10 PRO A  80  SER A  89 -1  N  SER A  89   O  LYS A  92           
SHEET   10   A10 PHE A  71  GLN A  74 -1  N  GLU A  73   O  CYS A  81           
SHEET    1   B10 ARG B  59  LYS B  66  0                                        
SHEET    2   B10 THR B  49  THR B  56 -1  N  THR B  56   O  ARG B  59           
SHEET    3   B10 ALA B  40  GLU B  46 -1  N  GLU B  46   O  THR B  49           
SHEET    4   B10 GLY B   5  GLU B  13 -1  N  TRP B   7   O  VAL B  41           
SHEET    5   B10 VAL B 128  ARG B 136 -1  N  VAL B 135   O  LYS B   8           
SHEET    6   B10 GLU B 118  ALA B 125 -1  N  ALA B 125   O  VAL B 128           
SHEET    7   B10 THR B 107  THR B 114 -1  N  THR B 114   O  GLU B 118           
SHEET    8   B10 LYS B  92  LEU B  99 -1  N  CYS B  95   O  TRP B 109           
SHEET    9   B10 PRO B  80  SER B  89 -1  N  SER B  89   O  LYS B  92           
SHEET   10   B10 PHE B  71  GLN B  74 -1  N  GLU B  73   O  CYS B  81           
CRYST1   37.580   62.270   35.120 106.41  90.69 110.64 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      0.026610  0.010023  0.003563        0.00000                         
SCALE2      0.000000  0.017161  0.005525        0.00000                         
SCALE3      0.000000  0.000000  0.029915        0.00000