HEADER    HYDROLASE                               17-OCT-01   1K6V              
TITLE     LACK OF SYNERGY FOR INHIBITORS TARGETING A MULTI-DRUG RESISTANT HIV-1 
TITLE    2 PROTEASE                                                             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: POL POLYPROTEIN;                                           
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: HIV-1 PROTEASE, RESIDUES 57-155;                           
COMPND   5 EC: 3.4.23.16;                                                       
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HUMAN IMMUNODEFICIENCY VIRUS 1;                 
SOURCE   3 ORGANISM_TAXID: 11676;                                               
SOURCE   4 GENE: POL;                                                           
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    INDINAVIR, INHIBITOR RECOGNITION, DRUG RESISTANCE, HIV-1 PROTEASE,    
KEYWDS   2 HYDROLASE                                                            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    C.A.SCHIFFER                                                          
REVDAT   5   16-AUG-23 1K6V    1       REMARK                                   
REVDAT   4   27-OCT-21 1K6V    1       COMPND REMARK SEQADV HETNAM              
REVDAT   3   24-FEB-09 1K6V    1       VERSN                                    
REVDAT   2   01-APR-03 1K6V    1       JRNL                                     
REVDAT   1   06-FEB-02 1K6V    0                                                
JRNL        AUTH   N.M.KING,L.MELNICK,M.PRABU-JEYABALAN,E.A.NALIVAIKA,S.S.YANG, 
JRNL        AUTH 2 Y.GAO,X.NIE,C.ZEPP,D.L.HEEFNER,C.A.SCHIFFER                  
JRNL        TITL   LACK OF SYNERGY FOR INHIBITORS TARGETING A                   
JRNL        TITL 2 MULTI-DRUG-RESISTANT HIV-1 PROTEASE.                         
JRNL        REF    PROTEIN SCI.                  V.  11   418 2002              
JRNL        REFN                   ISSN 0961-8368                               
JRNL        PMID   11790852                                                     
JRNL        DOI    10.1110/PS.2520102                                           
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
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) : 2.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 27.00                          
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)   (%) : 96.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 12820                          
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) : 0.177                           
REMARK   3   FREE R VALUE                     : 0.211                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 1282                            
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            : 1508                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 65                                      
REMARK   3   SOLVENT ATOMS            : 158                                     
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) : 0.006                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.200                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 25.70                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.800                           
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 : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : 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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : MK1.PARAM                                      
REMARK   3  PARAMETER FILE  4  : ACE.PARAM                                      
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : MK1.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : ACE.TOP                                        
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1K6V COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-NOV-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000014634.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 11-APR-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 298.0                              
REMARK 200  PH                             : 6.2                                
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                             
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : YALE MIRRORS                       
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 12820                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.000                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 27.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.0                               
REMARK 200  DATA REDUNDANCY                : 8.500                              
REMARK 200  R MERGE                    (I) : 0.06900                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.6000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS            
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: PDB ENTRY 1K6P                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 43.48                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.18                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: SODIUM PHOSPHATE, SODIUM CITRATE,        
REMARK 280  AMMONIUM SULPHATE, PH 6.2, VAPOR DIFFUSION, HANGING DROP,           
REMARK 280  TEMPERATURE 298K                                                    
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       25.72250            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       30.87150            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       29.70200            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       30.87150            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       25.72250            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       29.70200            
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: 5800 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 9390 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -21.0 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 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ARG A  41    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     ARG B  41    CG   CD   NE   CZ   NH1  NH2                        
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     LYS B    7   CE   NZ                                             
REMARK 480     LYS B   45   CD   CE   NZ                                        
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    PRO B  79       52.28    -69.22                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 502                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT B 505                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 506                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT B 508                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE XN2 B 252                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1K6C   RELATED DB: PDB                                   
REMARK 900 LACK OF SYNERGY FOR INHIBITORS TARGETING A MULTI-DRUG RESISTANT HIV- 
REMARK 900 1 PROTEASE                                                           
REMARK 900 RELATED ID: 1K6P   RELATED DB: PDB                                   
REMARK 900 LACK OF SYNERGY FOR INHIBITORS TARGETING A MULTI-DRUG RESISTANT HIV- 
REMARK 900 1 PROTEASE                                                           
REMARK 900 RELATED ID: 1K6T   RELATED DB: PDB                                   
REMARK 900 LACK OF SYNERGY FOR INHIBITORS TARGETING A MULTI-DRUG RESISTANT HIV- 
REMARK 900 1 PROTEASE                                                           
DBREF  1K6V A    1    99  UNP    P35963   POL_HV1Y2       57    155             
DBREF  1K6V B    1    99  UNP    P35963   POL_HV1Y2       57    155             
SEQADV 1K6V LYS A    7  UNP  P35963    GLN    63 ENGINEERED MUTATION            
SEQADV 1K6V ARG A   14  UNP  P35963    LYS    70 ENGINEERED MUTATION            
SEQADV 1K6V THR A   82  UNP  P35963    VAL   138 ENGINEERED MUTATION            
SEQADV 1K6V VAL A   84  UNP  P35963    ILE   140 ENGINEERED MUTATION            
SEQADV 1K6V LYS B    7  UNP  P35963    GLN    63 ENGINEERED MUTATION            
SEQADV 1K6V ARG B   14  UNP  P35963    LYS    70 ENGINEERED MUTATION            
SEQADV 1K6V THR B   82  UNP  P35963    VAL   138 ENGINEERED MUTATION            
SEQADV 1K6V VAL B   84  UNP  P35963    ILE   140 ENGINEERED MUTATION            
SEQRES   1 A   99  PRO GLN ILE THR LEU TRP LYS ARG PRO LEU VAL THR ILE          
SEQRES   2 A   99  ARG ILE GLY GLY GLN LEU LYS GLU ALA LEU LEU ASP THR          
SEQRES   3 A   99  GLY ALA ASP ASP THR VAL LEU GLU GLU MET ASN LEU PRO          
SEQRES   4 A   99  GLY ARG TRP LYS PRO LYS MET ILE GLY GLY ILE GLY GLY          
SEQRES   5 A   99  PHE ILE LYS VAL ARG GLN TYR ASP GLN ILE PRO ILE GLU          
SEQRES   6 A   99  ILE CYS GLY HIS LYS ALA ILE GLY THR VAL LEU VAL GLY          
SEQRES   7 A   99  PRO THR PRO THR ASN VAL 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 LYS ARG PRO LEU VAL THR ILE          
SEQRES   2 B   99  ARG ILE GLY GLY GLN LEU LYS GLU ALA LEU LEU ASP THR          
SEQRES   3 B   99  GLY ALA ASP ASP THR VAL LEU GLU GLU MET ASN LEU PRO          
SEQRES   4 B   99  GLY ARG TRP LYS PRO LYS MET ILE GLY GLY ILE GLY GLY          
SEQRES   5 B   99  PHE ILE LYS VAL ARG GLN TYR ASP GLN ILE PRO ILE GLU          
SEQRES   6 B   99  ILE CYS GLY HIS LYS ALA ILE GLY THR VAL LEU VAL GLY          
SEQRES   7 B   99  PRO THR PRO THR ASN VAL ILE GLY ARG ASN LEU LEU THR          
SEQRES   8 B   99  GLN ILE GLY CYS THR LEU ASN PHE                              
HET    ACT  A 502       4                                                       
HET    ACT  A 506       4                                                       
HET    ACT  B 505       4                                                       
HET    ACT  B 508       4                                                       
HET    XN2  B 252      49                                                       
HETNAM     ACT ACETATE ION                                                      
HETNAM     XN2 N-[2-HYDROXY-1-INDANYL]-5-[(2-                                   
HETNAM   2 XN2  TERTIARYBUTYLAMINOCARBONYL)-4(BENZO[1,3]DIOXOL-5-               
HETNAM   3 XN2  YLMETHYL)-PIPERAZINO]-4-HYDROXY-2-(1-PHE NYLETHYL)-             
HETNAM   4 XN2  PENTANAMIDE                                                     
HETSYN     XN2 ANALOGUE OF INDINAVIR DRUG                                       
FORMUL   3  ACT    4(C2 H3 O2 1-)                                               
FORMUL   7  XN2    C39 H50 N4 O6                                                
FORMUL   8  HOH   *158(H2 O)                                                    
HELIX    1   1 GLY A   86  THR A   91  1                                   6    
HELIX    2   2 GLY B   86  THR B   91  1                                   6    
SHEET    1   A 4 GLN A   2  THR A   4  0                                        
SHEET    2   A 4 THR B  96  ASN B  98 -1  O  LEU B  97   N  ILE A   3           
SHEET    3   A 4 THR A  96  ASN A  98 -1  O  THR A  96   N  ASN B  98           
SHEET    4   A 4 GLN B   2  ILE B   3 -1  N  ILE B   3   O  LEU A  97           
SHEET    1   B 8 LYS A  43  GLY A  49  0                                        
SHEET    2   B 8 GLY A  52  ILE A  66 -1  O  GLY A  52   N  GLY A  49           
SHEET    3   B 8 LEU A  10  ILE A  15 -1  O  ARG A  14   N  GLU A  65           
SHEET    4   B 8 GLN A  18  LEU A  24 -1  N  GLN A  18   O  ILE A  15           
SHEET    5   B 8 VAL A  84  ILE A  85  1  N  ILE A  85   O  LEU A  23           
SHEET    6   B 8 VAL A  32  LEU A  33 -1  O  VAL A  32   N  VAL A  84           
SHEET    7   B 8 HIS A  69  VAL A  77  1  O  LEU A  76   N  LEU A  33           
SHEET    8   B 8 GLY A  52  ILE A  66 -1  N  ARG A  57   O  VAL A  77           
SHEET    1   C 8 LYS B  43  GLY B  49  0                                        
SHEET    2   C 8 GLY B  52  ILE B  66 -1  O  GLY B  52   N  GLY B  49           
SHEET    3   C 8 LEU B  10  ILE B  15 -1  O  ARG B  14   N  GLU B  65           
SHEET    4   C 8 GLN B  18  LEU B  24 -1  N  GLN B  18   O  ILE B  15           
SHEET    5   C 8 VAL B  84  ILE B  85  1  N  ILE B  85   O  LEU B  23           
SHEET    6   C 8 VAL B  32  LEU B  33 -1  O  VAL B  32   N  VAL B  84           
SHEET    7   C 8 HIS B  69  VAL B  77  1  O  LEU B  76   N  LEU B  33           
SHEET    8   C 8 GLY B  52  ILE B  66 -1  N  ARG B  57   O  VAL B  77           
SITE     1 AC1  5 PRO A   1  HOH A 560  HOH A 574  HIS B  69                    
SITE     2 AC1  5 LYS B  70                                                     
SITE     1 AC2  5 PRO A  39  GLY A  40  MET B  36  ASN B  37                    
SITE     2 AC2  5 HOH B 571                                                     
SITE     1 AC3  4 ARG A  14  ARG B  14  GLY B  17  HOH B 564                    
SITE     1 AC4  4 PRO B   1  ARG B  57  HIS B  69  HOH B 543                    
SITE     1 AC5 24 TRP A   6  ARG A   8  ASP A  25  GLY A  27                    
SITE     2 AC5 24 ILE A  47  GLY A  48  GLY A  49  ILE A  50                    
SITE     3 AC5 24 PHE A  53  VAL A  84  HOH A 530  ASP B  25                    
SITE     4 AC5 24 GLY B  27  ALA B  28  ASP B  29  ASP B  30                    
SITE     5 AC5 24 VAL B  32  GLY B  48  GLY B  49  ILE B  50                    
SITE     6 AC5 24 PRO B  81  HOH B 512  HOH B 527  HOH B 567                    
CRYST1   51.445   59.404   61.743  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      0.019438  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.016833  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.016196        0.00000