HEADER    HYDROLASE/HYDROLASE INHIBITOR           28-DEC-99   1C6Z              
TITLE     ALTERNATE BINDING SITE FOR THE P1-P3 GROUP OF A CLASS OF POTENT HIV-1 
TITLE    2 PROTEASE INHIBITORS AS A RESULT OF CONCERTED STRUCTURAL CHANGE IN    
TITLE    3 80'S LOOP.                                                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (PROTEASE);                                        
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 EC: 3.4.24.-;                                                        
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 OTHER_DETAILS: NY5 ISOLATE                                           
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HUMAN IMMUNODEFICIENCY VIRUS 1;                 
SOURCE   3 ORGANISM_TAXID: 11676;                                               
SOURCE   4 GENE: NY5 ISOLATE;                                                   
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    HYDROLASE-HYDROLASE INHIBITOR COMPLEX                                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    S.MUNSHI                                                              
REVDAT   4   27-DEC-23 1C6Z    1       COMPND REMARK HETNAM HETSYN              
REVDAT   3   13-JUL-11 1C6Z    1       VERSN                                    
REVDAT   2   24-FEB-09 1C6Z    1       VERSN                                    
REVDAT   1   28-DEC-00 1C6Z    0                                                
JRNL        AUTH   S.MUNSHI,Z.CHEN,Y.YAN,Y.LI,D.B.OLSEN,H.B.SCHOCK,B.B.GALVIN,  
JRNL        AUTH 2 B.DORSEY,L.C.KUO                                             
JRNL        TITL   AN ALTERNATE BINDING SITE FOR THE P1-P3 GROUP OF A CLASS OF  
JRNL        TITL 2 POTENT HIV-1 PROTEASE INHIBITORS AS A RESULT OF CONCERTED    
JRNL        TITL 3 STRUCTURAL CHANGE IN THE 80S LOOP OF THE PROTEASE.           
JRNL        REF    ACTA CRYSTALLOGR.,SECT.D      V.  56   381 2000              
JRNL        REFN                   ISSN 0907-4449                               
JRNL        PMID   10739910                                                     
JRNL        DOI    10.1107/S0907444900000469                                    
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   A.KROHN,S.REDSHAW,J.C.RITCHIE,B.J.GRAVES,M.H.HATADA          
REMARK   1  TITL   NOVEL BINDING MODE OF HIGHLY POTENT HIV-PROTEINASE           
REMARK   1  TITL 2 INHIBITORS INCORPORATING THE (R)-HYDROXYETHYLAMINE ISOSTERE  
REMARK   1  REF    J.MED.CHEM.                   V.  34  3340 1991              
REMARK   1  REFN                   ISSN 0022-2623                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : NULL                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.180                           
REMARK   3   FREE R VALUE                     : 0.290                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1514                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 49                                      
REMARK   3   SOLVENT ATOMS            : 76                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  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) : 0.017                           
REMARK   3   BOND ANGLES            (DEGREES) : 2.500                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1C6Z COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-JAN-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000001412.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 7717                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 82.0                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : 0.06200                            
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) : 2.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.59                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 73.0                               
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: NULL                         
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 58.50                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.96                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALS OBTAINED BY CO                  
REMARK 280  -CRYSTALLIZATION AT PH 5.2, USING 0.6M NACL AS PRECIPITATING        
REMARK 280  AGENT IN 0.1M SODIUM ACETATE BUFFER. PROTEIN WAS AT 5.5 MG/ML       
REMARK 280  CONCENTRATION.                                                      
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-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       44.06500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       16.49500            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       44.07000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       16.49500            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       44.06500            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       44.07000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 5170 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 9200 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -29.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, 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 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 9X MUTANT PROTEASE HAS NINE POINT MUTATIONS COMPARED TO              
REMARK 400 WILD TYPE: L10V,K20M,L24I,S37D,M46I,I54V,L63P,A71V,V82T              
REMARK 400                                                                      
REMARK 400 THERE IS ONE PROTEASE DIMER IN AN ASYMMETRICAL UNIT.  THE            
REMARK 400 TWO MOLECULES ARE LABELED AS CHAIN A AND CHAIN B.  THERE             
REMARK 400 IS ONE SAQUINAVIR INHIBITOR MOLECULE LABELED AS ROC 505              
REMARK 400 WITH ALTERNATE CONFORMATIONS OF OCCUPANCY 0.5                        
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   CG2  THR A     4     O    HOH B   307              1.60            
REMARK 500   O    THR B   204     O    HOH B   324              2.10            
REMARK 500   O    ILE A    72     O    HOH A   333              2.19            
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   O    HOH A   306     O    HOH A   327     3646     0.39            
REMARK 500   O    HOH A   339     O    HOH A   351     3656     1.13            
REMARK 500   N    LEU A    89     O    HOH B   332     4556     1.41            
REMARK 500   CA   LEU A    89     O    HOH B   332     4556     1.51            
REMARK 500   NH1  ARG B   241     O    HOH A   333     4456     1.61            
REMARK 500   C    ASN A    88     O    HOH B   332     4556     1.89            
REMARK 500   CB   LEU A    89     O    HOH B   332     4556     2.15            
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    PRO A   1   CA  -  N   -  CD  ANGL. DEV. = -13.0 DEGREES          
REMARK 500    GLN A   7   CG  -  CD  -  OE1 ANGL. DEV. =  12.4 DEGREES          
REMARK 500    GLU A  35   CA  -  CB  -  CG  ANGL. DEV. =  19.3 DEGREES          
REMARK 500    GLN A  61   CA  -  CB  -  CG  ANGL. DEV. = -14.3 DEGREES          
REMARK 500    ASN A  98   CB  -  CA  -  C   ANGL. DEV. = -14.5 DEGREES          
REMARK 500    PRO B 201   CA  -  N   -  CD  ANGL. DEV. =  -9.7 DEGREES          
REMARK 500    GLN B 218   CA  -  CB  -  CG  ANGL. DEV. =  13.9 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    MET A  36      168.96    179.85                                   
REMARK 500    GLN A  61       58.87     38.04                                   
REMARK 500    GLU A  65       78.73   -100.98                                   
REMARK 500    LEU B 205       31.20    -92.35                                   
REMARK 500    PRO B 209       82.21    -66.38                                   
REMARK 500    PRO B 239       58.61    -67.73                                   
REMARK 500    PRO B 279       44.39    -75.32                                   
REMARK 500    ARG B 287       23.75    -72.81                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 THE INHIBITOR ROC IS A HYDROXYETHYLAMINE CONTAINING                  
REMARK 600 TRANSITION STATE MIMETIC.                                            
REMARK 630                                                                      
REMARK 630 MOLECULE TYPE: PEPTIDE-LIKE INHIBITOR                                
REMARK 630 MOLECULE NAME: (2S)-N-[(2S,3R)-4-[(2S,3S,4AS,8AS)-3-(TERT-           
REMARK 630 BUTYLCARBAMOYL)-3,4,4A,5,6,7,8,8A-OCTAHYDRO-1H-ISOQUINOLIN-2-YL]-3-  
REMARK 630 HYDROXY-1 -PHENYL-BUTAN-2-YL]-2-(QUINOLIN-2-YLCARBONYLAMINO)         
REMARK 630 BUTANEDIAMIDE                                                        
REMARK 630 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 630  SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                           
REMARK 630                                                                      
REMARK 630   M RES C SSSEQI                                                     
REMARK 630     ROC B   505                                                      
REMARK 630 SOURCE: NULL                                                         
REMARK 630 TAXONOMY: NULL                                                       
REMARK 630 SUBCOMP:    QNC ASN HP0 NTB                                          
REMARK 630 DETAILS: NULL                                                        
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ROC B 505                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1C6X   RELATED DB: PDB                                   
REMARK 900 HIV-1 PROTEASE WITH L-739,622                                        
REMARK 900 RELATED ID: 1C6Y   RELATED DB: PDB                                   
REMARK 900 HIV-1 PROTEASE WITH L-735,524                                        
REMARK 900 RELATED ID: 1C70   RELATED DB: PDB                                   
REMARK 900 HIV-1 PROTEASE WITH L-756,423                                        
DBREF  1C6Z A    1    99  UNP    O09893   O09893_9HIV1     1     99             
DBREF  1C6Z B  201   299  UNP    O09893   O09893_9HIV1     1     99             
SEQRES   1 A   99  PRO GLN ILE THR LEU TRP GLN ARG PRO VAL VAL THR ILE          
SEQRES   2 A   99  LYS ILE GLY GLY GLN LEU MET GLU ALA LEU ILE ASP THR          
SEQRES   3 A   99  GLY ALA ASP ASP THR VAL LEU GLU GLU MET ASP LEU PRO          
SEQRES   4 A   99  GLY ARG TRP LYS PRO LYS ILE ILE GLY GLY ILE GLY GLY          
SEQRES   5 A   99  PHE VAL LYS VAL ARG GLN TYR ASP GLN ILE PRO ILE GLU          
SEQRES   6 A   99  ILE CYS GLY HIS LYS VAL ILE GLY THR VAL LEU VAL GLY          
SEQRES   7 A   99  PRO THR PRO THR ASN ILE ILE GLY ARG ASN LEU LEU THR          
SEQRES   8 A   99  GLN ILE GLY CYS THR LEU ASN PHE                              
SEQRES   1 B   99  PRO GLN ILE THR LEU TRP GLN ARG PRO VAL VAL THR ILE          
SEQRES   2 B   99  LYS ILE GLY GLY GLN LEU MET GLU ALA LEU ILE ASP THR          
SEQRES   3 B   99  GLY ALA ASP ASP THR VAL LEU GLU GLU MET ASP LEU PRO          
SEQRES   4 B   99  GLY ARG TRP LYS PRO LYS ILE ILE GLY GLY ILE GLY GLY          
SEQRES   5 B   99  PHE VAL LYS VAL ARG GLN TYR ASP GLN ILE PRO ILE GLU          
SEQRES   6 B   99  ILE CYS GLY HIS LYS VAL ILE GLY THR VAL LEU VAL GLY          
SEQRES   7 B   99  PRO THR PRO THR ASN ILE ILE GLY ARG ASN LEU LEU THR          
SEQRES   8 B   99  GLN ILE GLY CYS THR LEU ASN PHE                              
HET    ROC  B 505      98                                                       
HETNAM     ROC (2S)-N-[(2S,3R)-4-[(2S,3S,4AS,8AS)-3-(TERT-                      
HETNAM   2 ROC  BUTYLCARBAMOYL)-3,4,4A,5,6,7,8,8A-OCTAHYDRO-1H-                 
HETNAM   3 ROC  ISOQUINOLIN-2-YL]-3-HYDROXY-1 -PHENYL-BUTAN-2-YL]-2-            
HETNAM   4 ROC  (QUINOLIN-2-YLCARBONYLAMINO)BUTANEDIAMIDE                       
HETSYN     ROC FORTOVASE; SAQUINAVIR; RO 31-8959                                
FORMUL   3  ROC    C38 H50 N6 O5                                                
FORMUL   4  HOH   *76(H2 O)                                                     
HELIX    1   1 GLY A   86  THR A   91  1                                   6    
HELIX    2   2 GLN A   92  GLY A   94  5                                   3    
SHEET    1   A 4 GLN A   2  THR A   4  0                                        
SHEET    2   A 4 THR B 296  ASN B 298 -1  O  LEU B 297   N  ILE A   3           
SHEET    3   A 4 THR A  96  ASN A  98 -1  N  THR A  96   O  ASN B 298           
SHEET    4   A 4 GLN B 202  THR B 204 -1  N  ILE B 203   O  LEU A  97           
SHEET    1   B 3 VAL A  10  ILE A  15  0                                        
SHEET    2   B 3 GLN A  18  ILE A  24 -1  O  GLN A  18   N  ILE A  15           
SHEET    3   B 3 ILE A  84  ILE A  85  1  N  ILE A  85   O  LEU A  23           
SHEET    1   C 4 VAL A  32  LEU A  33  0                                        
SHEET    2   C 4 HIS A  69  VAL A  77  1  O  LEU A  76   N  LEU A  33           
SHEET    3   C 4 GLY A  52  ILE A  66 -1  N  ARG A  57   O  VAL A  77           
SHEET    4   C 4 LYS A  43  GLY A  49 -1  O  LYS A  43   N  GLN A  58           
SHEET    1   D 8 PRO B 244  GLY B 249  0                                        
SHEET    2   D 8 GLY B 252  ILE B 266 -1  O  GLY B 252   N  GLY B 249           
SHEET    3   D 8 HIS B 269  GLY B 278 -1  N  HIS B 269   O  ILE B 266           
SHEET    4   D 8 THR B 231  GLU B 234  1  O  THR B 231   N  LEU B 276           
SHEET    5   D 8 ILE B 284  ILE B 285 -1  N  ILE B 284   O  VAL B 232           
SHEET    6   D 8 GLN B 218  ILE B 224  1  O  LEU B 223   N  ILE B 285           
SHEET    7   D 8 VAL B 210  ILE B 215 -1  O  VAL B 211   N  ALA B 222           
SHEET    8   D 8 GLY B 252  ILE B 266 -1  N  GLU B 265   O  LYS B 214           
SITE     1 AC1 22 ASP A  25  GLY A  27  ALA A  28  ASP A  29                    
SITE     2 AC1 22 ASP A  30  GLY A  48  GLY A  49  ILE A  50                    
SITE     3 AC1 22 PRO A  81  THR A  82  ARG B 208  ASP B 225                    
SITE     4 AC1 22 GLY B 227  ALA B 228  ASP B 229  ASP B 230                    
SITE     5 AC1 22 ILE B 247  GLY B 248  GLY B 249  PRO B 281                    
SITE     6 AC1 22 ILE B 284  HOH B 301                                          
CRYST1   88.130   88.140   32.990  90.00  90.00  90.00 P 21 21 21    8          
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      0.011346  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.011346  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.030313        0.00000