HEADER    IMMUNE SYSTEM                           27-NOV-02   1NAK              
TITLE     IGG1 FAB FRAGMENT (83.1) COMPLEX WITH 16-RESIDUE PEPTIDE (RESIDUES    
TITLE    2 304-321 OF HIV-1 GP120 (MN ISOLATE))                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: FAB 83.1 - LIGHT CHAIN;                                    
COMPND   3 CHAIN: L, M;                                                         
COMPND   4 MOL_ID: 2;                                                           
COMPND   5 MOLECULE: FAB 83.1 - HEAVY CHAIN;                                    
COMPND   6 CHAIN: H, I;                                                         
COMPND   7 MOL_ID: 3;                                                           
COMPND   8 MOLECULE: PEPTIDE MP1;                                               
COMPND   9 CHAIN: P, Q;                                                         
COMPND  10 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: MUS MUSCULUS;                                   
SOURCE   3 ORGANISM_COMMON: HOUSE MOUSE;                                        
SOURCE   4 ORGANISM_TAXID: 10090;                                               
SOURCE   5 STRAIN: ASW;                                                         
SOURCE   6 MOL_ID: 2;                                                           
SOURCE   7 ORGANISM_SCIENTIFIC: MUS MUSCULUS;                                   
SOURCE   8 ORGANISM_COMMON: HOUSE MOUSE;                                        
SOURCE   9 ORGANISM_TAXID: 10090;                                               
SOURCE  10 STRAIN: ASW;                                                         
SOURCE  11 MOL_ID: 3;                                                           
SOURCE  12 SYNTHETIC: YES;                                                      
SOURCE  13 OTHER_DETAILS: THE PEPTIDE WAS SYNTHESIZED CHEMICALLY; ITS SEQUENCE  
SOURCE  14 OCCURS IN THE MN HIV-1 VIRAL ISOLATE.                                
KEYWDS    IMMUNOGLOBULIN FOLD, IMMUNE SYSTEM                                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    R.L.STANFIELD,J.B.GHIARA,E.O.SAPHIRE,A.T.PROFY,I.A.WILSON             
REVDAT   5   30-OCT-24 1NAK    1       REMARK                                   
REVDAT   4   16-AUG-23 1NAK    1       REMARK                                   
REVDAT   3   03-SEP-14 1NAK    1       AUTHOR VERSN                             
REVDAT   2   24-FEB-09 1NAK    1       VERSN                                    
REVDAT   1   18-NOV-03 1NAK    0                                                
JRNL        AUTH   R.L.STANFIELD,J.B.GHIARA,E.OLLMANN SAPHIRE,A.T.PROFY,        
JRNL        AUTH 2 I.A.WILSON                                                   
JRNL        TITL   RECURRING CONFORMATION OF THE HUMAN IMMUNODEFICIENCY VIRUS   
JRNL        TITL 2 TYPE 1 GP120 V3 LOOP.                                        
JRNL        REF    VIROLOGY                      V. 315   159 2003              
JRNL        REFN                   ISSN 0042-6822                               
JRNL        PMID   14592768                                                     
JRNL        DOI    10.1016/S0042-6822(03)00525-7                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.57 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.57                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 48.08                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 97.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 29740                          
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) : 0.288                           
REMARK   3   FREE R VALUE                     : 0.326                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1469                            
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           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.57                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.66                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 74.90                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1061                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.4640                       
REMARK   3   BIN FREE R VALUE                    : 0.5250                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.30                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.066                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 6770                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 107                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 42.10                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 29.30                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 6.69000                                              
REMARK   3    B22 (A**2) : -4.33000                                             
REMARK   3    B33 (A**2) : -2.36000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 2.24000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
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) : 0.54                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.55                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.600                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 26.90                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.980                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
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  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.38                                                 
REMARK   3   BSOL        : 38.58                                                
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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : NULL                                           
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  RESIDUES 128-135 OF CHAINS H AND I HAVE VERY WEAK ELECTRON          
REMARK   3   DENSITY AND WERE GIVEN OCCUPANCY VALUES OF 0.0                     
REMARK   4                                                                      
REMARK   4 1NAK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-DEC-02.                  
REMARK 100 THE DEPOSITION ID IS D_1000017719.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 16-JUN-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 19-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.033                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : CUSTOM-MADE                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 29751                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.570                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 48.200                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.5                               
REMARK 200  DATA REDUNDANCY                : 2.900                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.11500                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 9.4000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.57                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.66                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 80.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.39400                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.100                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: EPMR                                                  
REMARK 200 STARTING MODEL: PDB ENTRY 1ACY                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 51.11                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.54                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 1.6M NA/K PHOSPHATE, 5% ISOPROPANOL,     
REMARK 280  PH 6.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298.K            
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-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   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       61.29850            
REMARK 290   SMTRY3   2  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: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 4340 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 19500 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -28.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: L, H, P                               
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: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 4430 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 19410 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -28.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: M, I, Q                               
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     GLU L   213                                                      
REMARK 465     CYS L   214                                                      
REMARK 465     CYS P   311                                                      
REMARK 465     PHE P   324                                                      
REMARK 465     TYR P   325                                                      
REMARK 465     THR P   326                                                      
REMARK 465     THR P   327                                                      
REMARK 465     CYS P   328                                                      
REMARK 465     GLU M   213                                                      
REMARK 465     CYS M   214                                                      
REMARK 465     CYS Q   311                                                      
REMARK 465     PHE Q   324                                                      
REMARK 465     TYR Q   325                                                      
REMARK 465     THR Q   326                                                      
REMARK 465     THR Q   327                                                      
REMARK 465     CYS Q   328                                                      
REMARK 475                                                                      
REMARK 475 ZERO OCCUPANCY RESIDUES                                              
REMARK 475 THE FOLLOWING RESIDUES WERE MODELED WITH ZERO OCCUPANCY.             
REMARK 475 THE LOCATION AND PROPERTIES OF THESE RESIDUES MAY NOT                
REMARK 475 BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;                      
REMARK 475 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE)          
REMARK 475   M RES C  SSEQI                                                     
REMARK 475     SER H   128                                                      
REMARK 475     ALA H   129                                                      
REMARK 475     ALA H   130                                                      
REMARK 475     GLN H   133                                                      
REMARK 475     THR H   134                                                      
REMARK 475     ASN H   135                                                      
REMARK 475     SER I   128                                                      
REMARK 475     ALA I   129                                                      
REMARK 475     ALA I   130                                                      
REMARK 475     GLN I   133                                                      
REMARK 475     THR I   134                                                      
REMARK 475     ASN I   135                                                      
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    CYS L  88   CA  -  CB  -  SG  ANGL. DEV. =   7.0 DEGREES          
REMARK 500    ALA H 130   N   -  CA  -  C   ANGL. DEV. = -22.8 DEGREES          
REMARK 500    GLN H 133   N   -  CA  -  C   ANGL. DEV. =  25.8 DEGREES          
REMARK 500    GLN H 133   CA  -  C   -  N   ANGL. DEV. = -13.2 DEGREES          
REMARK 500    ARG P 313   N   -  CA  -  C   ANGL. DEV. =  29.5 DEGREES          
REMARK 500    ALA I 130   N   -  CA  -  C   ANGL. DEV. = -23.2 DEGREES          
REMARK 500    GLN I 133   N   -  CA  -  C   ANGL. DEV. =  26.5 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    SER L  27E     -27.34   -168.32                                   
REMARK 500    SER L  28      -19.93     93.52                                   
REMARK 500    VAL L  51      -57.71     77.99                                   
REMARK 500    SER L  67      129.84    178.10                                   
REMARK 500    SER L  76      -72.66    -44.73                                   
REMARK 500    ARG L 108     -169.19   -102.40                                   
REMARK 500    THR L 126        1.18    -65.50                                   
REMARK 500    ASN L 138       76.83     44.56                                   
REMARK 500    THR L 200        9.18    -65.58                                   
REMARK 500    SER H  15      -14.67     88.95                                   
REMARK 500    VAL H  27      135.40   -175.96                                   
REMARK 500    SER H  62        6.84    -66.52                                   
REMARK 500    LEU H  63      -23.82   -145.02                                   
REMARK 500    LYS H  64       -1.03    -47.42                                   
REMARK 500    SER H  82B      58.71     38.96                                   
REMARK 500    ASP H  95      -60.67    -27.17                                   
REMARK 500    ALA H 129       39.52   -165.91                                   
REMARK 500    THR H 134       32.30    -17.00                                   
REMARK 500    ASN H 135     -117.20    -93.54                                   
REMARK 500    PHE H 148      138.92   -174.56                                   
REMARK 500    PRO H 151     -158.38   -110.90                                   
REMARK 500    SER H 163       22.84     48.60                                   
REMARK 500    ASP H 183       16.09     57.77                                   
REMARK 500    ARG P 313       87.20    -46.68                                   
REMARK 500    HIS P 315       67.66     62.84                                   
REMARK 500    SER M  27E     -23.93   -167.40                                   
REMARK 500    SER M  28      -16.70     89.22                                   
REMARK 500    VAL M  51      -53.82     67.75                                   
REMARK 500    SER M  67      130.98    176.75                                   
REMARK 500    SER M  76      -73.69    -49.24                                   
REMARK 500    THR M 126        0.14    -66.24                                   
REMARK 500    ASN M 138       75.09     44.86                                   
REMARK 500    ILE M 144      143.02   -170.19                                   
REMARK 500    LYS M 169      -51.04   -121.78                                   
REMARK 500    ASN M 190      -63.05   -107.57                                   
REMARK 500    LYS M 199      -36.33    -30.78                                   
REMARK 500    SER M 201      140.21   -176.47                                   
REMARK 500    ARG M 211      -73.55    -43.54                                   
REMARK 500    SER I  15      -20.92     91.28                                   
REMARK 500    VAL I  27      142.01   -172.53                                   
REMARK 500    ASN I  43       75.55     45.64                                   
REMARK 500    LEU I  63      -19.31   -145.92                                   
REMARK 500    LYS I  64       -1.54    -51.70                                   
REMARK 500    SER I  82B      61.41     34.96                                   
REMARK 500    ASP I  95      -64.59    -27.03                                   
REMARK 500    PHE I  97       18.83     56.25                                   
REMARK 500    ALA I 129       48.35   -171.14                                   
REMARK 500    THR I 134        9.85     -9.36                                   
REMARK 500    ASN I 135     -112.58    -66.55                                   
REMARK 500    PHE I 148      138.43   -176.63                                   
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS      52 RAMACHANDRAN OUTLIERS.                        
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THE SEQUENCE OF THIS PROTEIN WAS NOT DEPOSITED INTO ANY              
REMARK 999 SEQUENCE DATABASE                                                    
DBREF  1NAK L    1   214  PDB    1NAK     1NAK             1    214             
DBREF  1NAK H    1   229  PDB    1NAK     1NAK             1    229             
DBREF  1NAK P  311   328  PDB    1NAK     1NAK           311    328             
DBREF  1NAK M    1   214  PDB    1NAK     1NAK             1    214             
DBREF  1NAK I    1   229  PDB    1NAK     1NAK             1    229             
DBREF  1NAK Q  311   328  PDB    1NAK     1NAK           311    328             
SEQRES   1 L  219  ASP VAL VAL MET THR GLN SER PRO VAL SER LEU PRO VAL          
SEQRES   2 L  219  SER LEU GLY ASP GLN ALA SER ILE SER CYS ARG SER SER          
SEQRES   3 L  219  GLN SER LEU GLY HIS SER SER GLY ASN THR TYR LEU HIS          
SEQRES   4 L  219  TRP PHE LEU GLN LYS PRO GLY GLN SER PRO LYS LEU LEU          
SEQRES   5 L  219  ILE TYR LYS VAL SER ASN ARG PHE SER GLY VAL PRO ASP          
SEQRES   6 L  219  ARG PHE SER GLY SER GLY SER GLY THR ASP PHE THR PHE          
SEQRES   7 L  219  LYS ILE SER ARG VAL GLU ALA GLU ASP LEU GLY VAL TYR          
SEQRES   8 L  219  PHE CYS PHE GLN THR THR HIS ASP PRO TYR THR PHE GLY          
SEQRES   9 L  219  GLY GLY THR LYS LEU GLU ILE LYS ARG ALA ASP ALA ALA          
SEQRES  10 L  219  PRO THR VAL SER ILE PHE PRO PRO SER SER GLU GLN LEU          
SEQRES  11 L  219  THR SER GLY GLY ALA SER VAL VAL CYS PHE LEU ASN ASN          
SEQRES  12 L  219  PHE TYR PRO LYS ASP ILE ASN VAL LYS TRP LYS ILE ASP          
SEQRES  13 L  219  GLY SER GLU ARG GLN ASN GLY VAL LEU ASN SER TRP THR          
SEQRES  14 L  219  ASP GLN ASP SER LYS ASP SER THR TYR SER MET SER SER          
SEQRES  15 L  219  THR LEU THR LEU THR LYS ASP GLU TYR GLU ARG HIS ASN          
SEQRES  16 L  219  SER TYR THR CYS GLU ALA THR HIS LYS THR SER THR SER          
SEQRES  17 L  219  PRO ILE VAL LYS SER PHE ASN ARG ASN GLU CYS                  
SEQRES   1 H  214  GLU VAL GLN LEU GLN GLU SER GLY PRO SER LEU VAL LYS          
SEQRES   2 H  214  PRO SER GLN THR LEU SER LEU THR CYS SER VAL THR GLY          
SEQRES   3 H  214  VAL SER ILE THR SER GLY TYR TRP ASN TRP ILE ARG LYS          
SEQRES   4 H  214  PHE PRO GLY ASN LYS PHE GLU TYR MET GLY TYR ILE SER          
SEQRES   5 H  214  LYS SER GLY SER ALA TYR TYR ASN PRO SER LEU LYS SER          
SEQRES   6 H  214  ARG ILE SER PHE THR ARG ASP THR SER LYS ASN GLN PHE          
SEQRES   7 H  214  TYR LEU LYS LEU ASN SER VAL THR THR GLU ASP THR ALA          
SEQRES   8 H  214  THR TYR TYR CYS ALA ILE ASP ASP PHE ASP ILE TRP GLY          
SEQRES   9 H  214  ALA GLY THR THR VAL THR VAL SER SER ALA LYS THR THR          
SEQRES  10 H  214  PRO PRO SER VAL TYR PRO LEU ALA PRO GLY SER ALA ALA          
SEQRES  11 H  214  GLN THR ASN SER MET VAL THR LEU GLY CYS LEU VAL LYS          
SEQRES  12 H  214  GLY TYR PHE PRO GLU PRO VAL THR VAL THR TRP ASN SER          
SEQRES  13 H  214  GLY SER LEU SER SER GLY VAL HIS THR PHE PRO ALA VAL          
SEQRES  14 H  214  LEU GLN SER ASP LEU TYR THR LEU SER SER SER VAL THR          
SEQRES  15 H  214  VAL PRO SER SER PRO ARG PRO SER GLU THR VAL THR CYS          
SEQRES  16 H  214  ASN VAL ALA HIS PRO ALA SER SER THR LYS VAL ASP LYS          
SEQRES  17 H  214  LYS ILE VAL PRO ARG ASP                                      
SEQRES   1 P   16  CYS LYS ARG ILE HIS ILE GLY PRO GLY ARG ALA PHE TYR          
SEQRES   2 P   16  THR THR CYS                                                  
SEQRES   1 M  219  ASP VAL VAL MET THR GLN SER PRO VAL SER LEU PRO VAL          
SEQRES   2 M  219  SER LEU GLY ASP GLN ALA SER ILE SER CYS ARG SER SER          
SEQRES   3 M  219  GLN SER LEU GLY HIS SER SER GLY ASN THR TYR LEU HIS          
SEQRES   4 M  219  TRP PHE LEU GLN LYS PRO GLY GLN SER PRO LYS LEU LEU          
SEQRES   5 M  219  ILE TYR LYS VAL SER ASN ARG PHE SER GLY VAL PRO ASP          
SEQRES   6 M  219  ARG PHE SER GLY SER GLY SER GLY THR ASP PHE THR PHE          
SEQRES   7 M  219  LYS ILE SER ARG VAL GLU ALA GLU ASP LEU GLY VAL TYR          
SEQRES   8 M  219  PHE CYS PHE GLN THR THR HIS ASP PRO TYR THR PHE GLY          
SEQRES   9 M  219  GLY GLY THR LYS LEU GLU ILE LYS ARG ALA ASP ALA ALA          
SEQRES  10 M  219  PRO THR VAL SER ILE PHE PRO PRO SER SER GLU GLN LEU          
SEQRES  11 M  219  THR SER GLY GLY ALA SER VAL VAL CYS PHE LEU ASN ASN          
SEQRES  12 M  219  PHE TYR PRO LYS ASP ILE ASN VAL LYS TRP LYS ILE ASP          
SEQRES  13 M  219  GLY SER GLU ARG GLN ASN GLY VAL LEU ASN SER TRP THR          
SEQRES  14 M  219  ASP GLN ASP SER LYS ASP SER THR TYR SER MET SER SER          
SEQRES  15 M  219  THR LEU THR LEU THR LYS ASP GLU TYR GLU ARG HIS ASN          
SEQRES  16 M  219  SER TYR THR CYS GLU ALA THR HIS LYS THR SER THR SER          
SEQRES  17 M  219  PRO ILE VAL LYS SER PHE ASN ARG ASN GLU CYS                  
SEQRES   1 I  214  GLU VAL GLN LEU GLN GLU SER GLY PRO SER LEU VAL LYS          
SEQRES   2 I  214  PRO SER GLN THR LEU SER LEU THR CYS SER VAL THR GLY          
SEQRES   3 I  214  VAL SER ILE THR SER GLY TYR TRP ASN TRP ILE ARG LYS          
SEQRES   4 I  214  PHE PRO GLY ASN LYS PHE GLU TYR MET GLY TYR ILE SER          
SEQRES   5 I  214  LYS SER GLY SER ALA TYR TYR ASN PRO SER LEU LYS SER          
SEQRES   6 I  214  ARG ILE SER PHE THR ARG ASP THR SER LYS ASN GLN PHE          
SEQRES   7 I  214  TYR LEU LYS LEU ASN SER VAL THR THR GLU ASP THR ALA          
SEQRES   8 I  214  THR TYR TYR CYS ALA ILE ASP ASP PHE ASP ILE TRP GLY          
SEQRES   9 I  214  ALA GLY THR THR VAL THR VAL SER SER ALA LYS THR THR          
SEQRES  10 I  214  PRO PRO SER VAL TYR PRO LEU ALA PRO GLY SER ALA ALA          
SEQRES  11 I  214  GLN THR ASN SER MET VAL THR LEU GLY CYS LEU VAL LYS          
SEQRES  12 I  214  GLY TYR PHE PRO GLU PRO VAL THR VAL THR TRP ASN SER          
SEQRES  13 I  214  GLY SER LEU SER SER GLY VAL HIS THR PHE PRO ALA VAL          
SEQRES  14 I  214  LEU GLN SER ASP LEU TYR THR LEU SER SER SER VAL THR          
SEQRES  15 I  214  VAL PRO SER SER PRO ARG PRO SER GLU THR VAL THR CYS          
SEQRES  16 I  214  ASN VAL ALA HIS PRO ALA SER SER THR LYS VAL ASP LYS          
SEQRES  17 I  214  LYS ILE VAL PRO ARG ASP                                      
SEQRES   1 Q   16  CYS LYS ARG ILE HIS ILE GLY PRO GLY ARG ALA PHE TYR          
SEQRES   2 Q   16  THR THR CYS                                                  
FORMUL   7  HOH   *107(H2 O)                                                    
HELIX    1   1 GLU L   79  LEU L   83  5                                   5    
HELIX    2   2 SER L  121  THR L  126  1                                   6    
HELIX    3   3 LYS L  183  HIS L  189  1                                   7    
HELIX    4   4 SER H   28  GLY H   32  5                                   5    
HELIX    5   5 THR H   83  THR H   87  5                                   5    
HELIX    6   6 SER H  163  SER H  165  5                                   3    
HELIX    7   7 GLU M   79  LEU M   83  5                                   5    
HELIX    8   8 SER M  121  THR M  126  1                                   6    
HELIX    9   9 LYS M  183  HIS M  189  1                                   7    
HELIX   10  10 SER I   28  GLY I   32  5                                   5    
HELIX   11  11 THR I   83  THR I   87  5                                   5    
HELIX   12  12 SER I  163  SER I  165  5                                   3    
SHEET    1   A 4 MET L   4  SER L   7  0                                        
SHEET    2   A 4 ALA L  19  SER L  25 -1  O  ARG L  24   N  THR L   5           
SHEET    3   A 4 ASP L  70  ILE L  75 -1  O  PHE L  73   N  ILE L  21           
SHEET    4   A 4 PHE L  62  SER L  67 -1  N  SER L  67   O  ASP L  70           
SHEET    1   B 6 SER L  10  SER L  14  0                                        
SHEET    2   B 6 THR L 102  LYS L 107  1  O  LYS L 107   N  VAL L  13           
SHEET    3   B 6 GLY L  84  GLN L  90 -1  N  TYR L  86   O  THR L 102           
SHEET    4   B 6 LEU L  33  GLN L  38 -1  N  HIS L  34   O  PHE L  89           
SHEET    5   B 6 PRO L  44  TYR L  49 -1  O  ILE L  48   N  TRP L  35           
SHEET    6   B 6 ASN L  53  ARG L  54 -1  O  ASN L  53   N  TYR L  49           
SHEET    1   C 4 THR L 114  PHE L 118  0                                        
SHEET    2   C 4 GLY L 129  PHE L 139 -1  O  VAL L 133   N  PHE L 118           
SHEET    3   C 4 TYR L 173  THR L 182 -1  O  MET L 175   N  LEU L 136           
SHEET    4   C 4 VAL L 159  TRP L 163 -1  N  LEU L 160   O  THR L 178           
SHEET    1   D 4 SER L 153  GLU L 154  0                                        
SHEET    2   D 4 ASN L 145  ILE L 150 -1  N  ILE L 150   O  SER L 153           
SHEET    3   D 4 SER L 191  THR L 197 -1  O  THR L 193   N  LYS L 149           
SHEET    4   D 4 ILE L 205  ASN L 210 -1  O  LYS L 207   N  CYS L 194           
SHEET    1   E 4 GLN H   3  SER H   7  0                                        
SHEET    2   E 4 LEU H  18  THR H  25 -1  O  SER H  23   N  GLN H   5           
SHEET    3   E 4 GLN H  77  LEU H  82 -1  O  LEU H  82   N  LEU H  18           
SHEET    4   E 4 ILE H  67  ASP H  72 -1  N  THR H  70   O  TYR H  79           
SHEET    1   F 6 LEU H  11  VAL H  12  0                                        
SHEET    2   F 6 THR H 107  VAL H 111  1  O  THR H 110   N  VAL H  12           
SHEET    3   F 6 ALA H  88  ILE H  94 -1  N  TYR H  90   O  THR H 107           
SHEET    4   F 6 TRP H  34  PHE H  40 -1  N  ILE H  37   O  TYR H  91           
SHEET    5   F 6 LYS H  44  ILE H  51 -1  O  MET H  48   N  TRP H  36           
SHEET    6   F 6 ALA H  57  TYR H  59 -1  O  TYR H  58   N  TYR H  50           
SHEET    1   G 4 SER H 120  LEU H 124  0                                        
SHEET    2   G 4 MET H 137  TYR H 147 -1  O  GLY H 141   N  LEU H 124           
SHEET    3   G 4 LEU H 184  PRO H 194 -1  O  TYR H 185   N  TYR H 147           
SHEET    4   G 4 VAL H 171  GLN H 179 -1  N  HIS H 172   O  SER H 190           
SHEET    1   H 3 THR H 153  TRP H 157  0                                        
SHEET    2   H 3 THR H 207  HIS H 212 -1  O  ASN H 209   N  THR H 156           
SHEET    3   H 3 THR H 217  LYS H 222 -1  O  VAL H 219   N  VAL H 210           
SHEET    1   I 4 MET M   4  SER M   7  0                                        
SHEET    2   I 4 ALA M  19  SER M  25 -1  O  ARG M  24   N  THR M   5           
SHEET    3   I 4 ASP M  70  ILE M  75 -1  O  PHE M  73   N  ILE M  21           
SHEET    4   I 4 PHE M  62  SER M  67 -1  N  SER M  67   O  ASP M  70           
SHEET    1   J 6 SER M  10  SER M  14  0                                        
SHEET    2   J 6 THR M 102  LYS M 107  1  O  LYS M 107   N  VAL M  13           
SHEET    3   J 6 GLY M  84  GLN M  90 -1  N  TYR M  86   O  THR M 102           
SHEET    4   J 6 LEU M  33  GLN M  38 -1  N  HIS M  34   O  PHE M  89           
SHEET    5   J 6 PRO M  44  TYR M  49 -1  O  ILE M  48   N  TRP M  35           
SHEET    6   J 6 ASN M  53  ARG M  54 -1  O  ASN M  53   N  TYR M  49           
SHEET    1   K 4 SER M  10  SER M  14  0                                        
SHEET    2   K 4 THR M 102  LYS M 107  1  O  LYS M 107   N  VAL M  13           
SHEET    3   K 4 GLY M  84  GLN M  90 -1  N  TYR M  86   O  THR M 102           
SHEET    4   K 4 THR M  97  PHE M  98 -1  O  THR M  97   N  GLN M  90           
SHEET    1   L 4 THR M 114  PHE M 118  0                                        
SHEET    2   L 4 GLY M 129  PHE M 139 -1  O  VAL M 133   N  PHE M 118           
SHEET    3   L 4 TYR M 173  THR M 182 -1  O  MET M 175   N  LEU M 136           
SHEET    4   L 4 VAL M 159  TRP M 163 -1  N  LEU M 160   O  THR M 178           
SHEET    1   M 4 SER M 153  GLU M 154  0                                        
SHEET    2   M 4 ASN M 145  ILE M 150 -1  N  ILE M 150   O  SER M 153           
SHEET    3   M 4 SER M 191  THR M 197 -1  O  THR M 193   N  LYS M 149           
SHEET    4   M 4 ILE M 205  ASN M 210 -1  O  LYS M 207   N  CYS M 194           
SHEET    1   N 4 GLN I   3  SER I   7  0                                        
SHEET    2   N 4 LEU I  18  THR I  25 -1  O  SER I  23   N  GLN I   5           
SHEET    3   N 4 GLN I  77  LEU I  82 -1  O  LEU I  82   N  LEU I  18           
SHEET    4   N 4 ILE I  67  ASP I  72 -1  N  THR I  70   O  TYR I  79           
SHEET    1   O 6 LEU I  11  VAL I  12  0                                        
SHEET    2   O 6 THR I 107  VAL I 111  1  O  THR I 110   N  VAL I  12           
SHEET    3   O 6 ALA I  88  ILE I  94 -1  N  ALA I  88   O  VAL I 109           
SHEET    4   O 6 TRP I  34  PHE I  40 -1  N  ILE I  37   O  TYR I  91           
SHEET    5   O 6 LYS I  44  ILE I  51 -1  O  MET I  48   N  TRP I  36           
SHEET    6   O 6 ALA I  57  TYR I  59 -1  O  TYR I  58   N  TYR I  50           
SHEET    1   P 4 SER I 120  LEU I 124  0                                        
SHEET    2   P 4 MET I 137  TYR I 147 -1  O  GLY I 141   N  LEU I 124           
SHEET    3   P 4 LEU I 184  PRO I 194 -1  O  TYR I 185   N  TYR I 147           
SHEET    4   P 4 VAL I 171  THR I 173 -1  N  HIS I 172   O  SER I 190           
SHEET    1   Q 4 SER I 120  LEU I 124  0                                        
SHEET    2   Q 4 MET I 137  TYR I 147 -1  O  GLY I 141   N  LEU I 124           
SHEET    3   Q 4 LEU I 184  PRO I 194 -1  O  TYR I 185   N  TYR I 147           
SHEET    4   Q 4 VAL I 177  GLN I 179 -1  N  GLN I 179   O  LEU I 184           
SHEET    1   R 3 THR I 153  TRP I 157  0                                        
SHEET    2   R 3 THR I 207  HIS I 212 -1  O  ASN I 209   N  THR I 156           
SHEET    3   R 3 THR I 217  LYS I 222 -1  O  VAL I 219   N  VAL I 210           
SSBOND   1 CYS L   23    CYS L   88                          1555   1555  2.04  
SSBOND   2 CYS L  134    CYS L  194                          1555   1555  2.04  
SSBOND   3 CYS H   22    CYS H   92                          1555   1555  2.04  
SSBOND   4 CYS H  142    CYS H  208                          1555   1555  2.03  
SSBOND   5 CYS M   23    CYS M   88                          1555   1555  2.03  
SSBOND   6 CYS M  134    CYS M  194                          1555   1555  2.03  
SSBOND   7 CYS I   22    CYS I   92                          1555   1555  2.04  
SSBOND   8 CYS I  142    CYS I  208                          1555   1555  2.03  
CISPEP   1 SER L    7    PRO L    8          0        -0.12                     
CISPEP   2 ASP L   94    PRO L   95          0        -0.09                     
CISPEP   3 TYR L  140    PRO L  141          0        -0.41                     
CISPEP   4 PHE H  148    PRO H  149          0        -0.04                     
CISPEP   5 GLU H  150    PRO H  151          0        -0.38                     
CISPEP   6 ARG H  200    PRO H  202          0         0.12                     
CISPEP   7 SER M    7    PRO M    8          0        -0.25                     
CISPEP   8 ASP M   94    PRO M   95          0        -0.60                     
CISPEP   9 TYR M  140    PRO M  141          0         0.00                     
CISPEP  10 PHE I  148    PRO I  149          0        -0.08                     
CISPEP  11 GLU I  150    PRO I  151          0        -0.33                     
CISPEP  12 ARG I  200    PRO I  202          0        -0.09                     
CRYST1   60.511  122.597   69.464  90.00 108.54  90.00 P 1 21 1      4          
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      0.016526  0.000000  0.005542        0.00000                         
SCALE2      0.000000  0.008157  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.015184        0.00000