PDB Short entry for 1SOM
HEADER    SERINE HYDROLASE                        17-MAR-99   1SOM              
TITLE     TORPEDO CALIFORNICA ACETYLCHOLINESTERASE INHIBITED BY NERVE AGENT GD  
TITLE    2 (SOMAN).                                                             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (ACETYLCHOLINESTERASE);                            
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 3.1.1.7;                                                         
COMPND   5 OTHER_DETAILS: NERVE AGENT GD (SOMAN) COVALENTLY BOUND TO CATALYTIC  
COMPND   6 SERINE (SER200)                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: TORPEDO CALIFORNICA;                            
SOURCE   3 ORGANISM_COMMON: PACIFIC ELECTRIC RAY;                               
SOURCE   4 ORGANISM_TAXID: 7787;                                                
SOURCE   5 VARIANT: G2 FORM;                                                    
SOURCE   6 ORGAN: ELECTRIC ORGAN;                                               
SOURCE   7 TISSUE: ELECTROPLAQUE                                                
KEYWDS    SERINE HYDROLASE, CHOLINESTERASE, NERVE AGENT, ORGANOPHOSPHOROUS ACID 
KEYWDS   2 ANHYDRIDE                                                            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.M.GREENBLATT,C.B.MILLARD,J.L.SUSSMAN,I.SILMAN                       
REVDAT   6   02-JUN-21 1SOM    1       REMARK HETSYN                            
REVDAT   5   29-JUL-20 1SOM    1       COMPND REMARK HETNAM LINK                
REVDAT   5 2                   1       SITE                                     
REVDAT   4   13-JUL-11 1SOM    1       VERSN                                    
REVDAT   3   24-FEB-09 1SOM    1       VERSN                                    
REVDAT   2   01-APR-03 1SOM    1       JRNL                                     
REVDAT   1   25-JUN-99 1SOM    0                                                
JRNL        AUTH   C.B.MILLARD,G.KRYGER,A.ORDENTLICH,H.M.GREENBLATT,M.HAREL,    
JRNL        AUTH 2 M.L.RAVES,Y.SEGALL,D.BARAK,A.SHAFFERMAN,I.SILMAN,J.L.SUSSMAN 
JRNL        TITL   CRYSTAL STRUCTURES OF AGED PHOSPHONYLATED                    
JRNL        TITL 2 ACETYLCHOLINESTERASE: NERVE AGENT REACTION PRODUCTS AT THE   
JRNL        TITL 3 ATOMIC LEVEL.                                                
JRNL        REF    BIOCHEMISTRY                  V.  38  7032 1999              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   10353814                                                     
JRNL        DOI    10.1021/BI982678L                                            
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   C.B.MILLARD,G.KRYGER,A.ORDENTLICH,M.HAREL,M.L.RAVES,         
REMARK   1  AUTH 2 H.M.GREENBLAT,Y.SEGALL,D.BARAK,A.SHAFFERMAN,I.SILMAN,        
REMARK   1  AUTH 3 J.L.SUSSMAN                                                  
REMARK   1  TITL   CRYSTAL STRUCTURAL OF "AGED" PHOSPHORYLATED AND              
REMARK   1  TITL 2 PHOSPHONYLATED TORPEDO CALIFORNICA ACETYLCHOLINESTERASE      
REMARK   1  EDIT   B.P.DOCTOR, P.TAYLOR, D.M.QUINN, R.L.ROTUNDO, M.K GENTRY     
REMARK   1  REF    STRUCTURE AND FUNCTION OF              425 1998              
REMARK   1  REF  2 CHOLINESTERASES AND RELATED                                  
REMARK   1  REF  3 PROTEINS                                                     
REMARK   1  PUBL   NEW YORK : PLENUM PRESS                                      
REMARK   1  REFN                                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.20 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 : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 29.50                          
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)   (%) : 96.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 48792                          
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) : 0.210                           
REMARK   3   FREE R VALUE                     : 0.251                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2460                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.005                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.20                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.34                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 94.50                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 7455                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2640                       
REMARK   3   BIN FREE R VALUE                    : 0.2920                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.10                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 398                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.015                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4174                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 42                                      
REMARK   3   SOLVENT ATOMS            : 184                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 24.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 35.30                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 7.77000                                              
REMARK   3    B22 (A**2) : 7.77000                                              
REMARK   3    B33 (A**2) : -15.50000                                            
REMARK   3    B12 (A**2) : 3.42000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.26                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.25                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.32                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.27                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.019                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.900                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 23.90                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.220                           
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        : 0.37                                                 
REMARK   3   BSOL        : 49.78                                                
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  : CARBOHYDRATE.PARAM                             
REMARK   3  PARAMETER FILE  3  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  4  : CIS_PEPTIDE.PARAM                              
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : CARBOHYDRATE.TOP                               
REMARK   3  TOPOLOGY FILE  3   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  4   : SOMAN.TOP                                      
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  REFINED INITIALLY WITH REFMAC TO AN R OF 23.4 AND RFREE OF 27.9     
REMARK   3                                                                      
REMARK   3  CONTINUOUS ELECTRON DENSITY FEATURES IN FRONT OF THE INDOLE         
REMARK   3  RINGS OF TRP84 AND TRP279 DID NOT SATISFACTORILY REFINE             
REMARK   3  WITH WATER MOLECULES. THESE FEATURES WERE LEFT EMPTY DURING         
REMARK   3  REFINEMENT, BUT THEIR POSITIONS ARE INDICATED IN THE MODEL          
REMARK   3  BY OXYGEN ATOMS WITH ZERO OCCUPANCY (RESIDUES 1000 - 1009)          
REMARK   4                                                                      
REMARK   4 1SOM COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-MAR-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000000673.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : DEC-97                             
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU300                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NI FILTER                          
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS II                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 49048                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.7                               
REMARK 200  DATA REDUNDANCY                : 5.800                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.05000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 15.6000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.28                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 94.1                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.29700                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.600                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER                        
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: 2ACE                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 68.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.80                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PROTEIN WAS CRYSTALLIZED FROM 35-40%     
REMARK 280  W/V PEG 200 0.15M MES PH 6.0 0.05M NACL 4 DEG. CELSIUS ,            
REMARK 280  TEMPERATURE 277.0K                                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+1/3                                            
REMARK 290       3555   -X+Y,-X,Z+2/3                                           
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z+2/3                                           
REMARK 290       6555   -X,-X+Y,-Z+1/3                                          
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       45.66733            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       91.33467            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       91.33467            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       45.66733            
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 3080 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 37560 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: 2.0 KCAL/MOL                          
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -0.500000  0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.866025  0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000      137.00200            
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     ASP A     1                                                      
REMARK 465     ASP A     2                                                      
REMARK 465     HIS A     3                                                      
REMARK 465     HIS A   486                                                      
REMARK 465     SER A   487                                                      
REMARK 465     GLN A   488                                                      
REMARK 465     GLU A   489                                                      
REMARK 465     ALA A   536                                                      
REMARK 465     CYS A   537                                                      
REMARK 465     ASP A   538                                                      
REMARK 465     GLY A   539                                                      
REMARK 465     GLU A   540                                                      
REMARK 465     LEU A   541                                                      
REMARK 465     SER A   542                                                      
REMARK 465     SER A   543                                                      
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     ASN A  42    CG   OD1  ND2                                       
REMARK 470     ARG A  46    CZ   NH1  NH2                                       
REMARK 470     ARG A 250    CZ   NH1  NH2                                       
REMARK 470     ASN A 257    CG   OD1  ND2                                       
REMARK 470     GLU A 260    OE1  OE2                                            
REMARK 470     GLU A 268    OE1  OE2                                            
REMARK 470     GLU A 344    OE1  OE2                                            
REMARK 470     GLU A 350    OE1  OE2                                            
REMARK 470     LYS A 357    NZ                                                  
REMARK 470     LYS A 413    CD   CE   NZ                                        
REMARK 470     LYS A 498    CG   CD   CE   NZ                                   
REMARK 470     GLU A 508    CD   OE1  OE2                                       
REMARK 470     ARG A 515    CZ   NH1  NH2                                       
REMARK 470     GLN A 526    OE1  NE2                                            
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   UNK  UNX A  1008     O    HOH A   728              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    LEU A 494   CA  -  CB  -  CG  ANGL. DEV. =  14.0 DEGREES          
REMARK 500    VAL A 518   CB  -  CA  -  C   ANGL. DEV. = -11.9 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    PHE A  45      -17.27     83.52                                   
REMARK 500    PRO A  76      126.49    -38.60                                   
REMARK 500    SER A 108       76.42   -158.71                                   
REMARK 500    SER A 200     -123.70     56.28                                   
REMARK 500    GLU A 299      -76.58   -124.04                                   
REMARK 500    THR A 317     -161.75   -164.56                                   
REMARK 500    ASP A 380       49.88   -156.03                                   
REMARK 500    VAL A 400      -60.21   -127.17                                   
REMARK 500    GLN A 526      -60.64   -120.86                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    TYR A 442         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 GD (SOMAN) HAS UNDERGONE DEALKYLATION                                
REMARK 600 AND THE PINACOLYL GROUP IS NOT VISIBLE                               
REMARK 600 IN THE ELECTRON DENSITY MAPS.                                        
REMARK 600                                                                      
REMARK 600 DUMMY ATOMS NOT USED IN REFINEMENT TO SHOW                           
REMARK 600 LOCATION OF TWO DENSITY FEATURES NEAR THE                            
REMARK 600 INDOLE RINGS OF TRP84 AND TRP279                                     
REMARK 615                                                                      
REMARK 615 ZERO OCCUPANCY ATOM                                                  
REMARK 615 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 615 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 615 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 615 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 615   M RES C  SSEQI                                                     
REMARK 615     UNX A  1000                                                      
REMARK 615     UNX A  1001                                                      
REMARK 615     UNX A  1002                                                      
REMARK 615     UNX A  1003                                                      
REMARK 615     UNX A  1004                                                      
REMARK 615     UNX A  1005                                                      
REMARK 615     UNX A  1006                                                      
REMARK 615     UNX A  1007                                                      
REMARK 615     UNX A  1008                                                      
REMARK 615     UNX A  1009                                                      
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: CAT                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: CATALYTIC TRIAD                                    
DBREF  1SOM A    1   543  UNP    P04058   ACES_TORCA      22    564             
SEQRES   1 A  543  ASP ASP HIS SER GLU LEU LEU VAL ASN THR LYS SER GLY          
SEQRES   2 A  543  LYS VAL MET GLY THR ARG VAL PRO VAL LEU SER SER HIS          
SEQRES   3 A  543  ILE SER ALA PHE LEU GLY ILE PRO PHE ALA GLU PRO PRO          
SEQRES   4 A  543  VAL GLY ASN MET ARG PHE ARG ARG PRO GLU PRO LYS LYS          
SEQRES   5 A  543  PRO TRP SER GLY VAL TRP ASN ALA SER THR TYR PRO ASN          
SEQRES   6 A  543  ASN CYS GLN GLN TYR VAL ASP GLU GLN PHE PRO GLY PHE          
SEQRES   7 A  543  SER GLY SER GLU MET TRP ASN PRO ASN ARG GLU MET SER          
SEQRES   8 A  543  GLU ASP CYS LEU TYR LEU ASN ILE TRP VAL PRO SER PRO          
SEQRES   9 A  543  ARG PRO LYS SER THR THR VAL MET VAL TRP ILE TYR GLY          
SEQRES  10 A  543  GLY GLY PHE TYR SER GLY SER SER THR LEU ASP VAL TYR          
SEQRES  11 A  543  ASN GLY LYS TYR LEU ALA TYR THR GLU GLU VAL VAL LEU          
SEQRES  12 A  543  VAL SER LEU SER TYR ARG VAL GLY ALA PHE GLY PHE LEU          
SEQRES  13 A  543  ALA LEU HIS GLY SER GLN GLU ALA PRO GLY ASN VAL GLY          
SEQRES  14 A  543  LEU LEU ASP GLN ARG MET ALA LEU GLN TRP VAL HIS ASP          
SEQRES  15 A  543  ASN ILE GLN PHE PHE GLY GLY ASP PRO LYS THR VAL THR          
SEQRES  16 A  543  ILE PHE GLY GLU SER ALA GLY GLY ALA SER VAL GLY MET          
SEQRES  17 A  543  HIS ILE LEU SER PRO GLY SER ARG ASP LEU PHE ARG ARG          
SEQRES  18 A  543  ALA ILE LEU GLN SER GLY SER PRO ASN CYS PRO TRP ALA          
SEQRES  19 A  543  SER VAL SER VAL ALA GLU GLY ARG ARG ARG ALA VAL GLU          
SEQRES  20 A  543  LEU GLY ARG ASN LEU ASN CYS ASN LEU ASN SER ASP GLU          
SEQRES  21 A  543  GLU LEU ILE HIS CYS LEU ARG GLU LYS LYS PRO GLN GLU          
SEQRES  22 A  543  LEU ILE ASP VAL GLU TRP ASN VAL LEU PRO PHE ASP SER          
SEQRES  23 A  543  ILE PHE ARG PHE SER PHE VAL PRO VAL ILE ASP GLY GLU          
SEQRES  24 A  543  PHE PHE PRO THR SER LEU GLU SER MET LEU ASN SER GLY          
SEQRES  25 A  543  ASN PHE LYS LYS THR GLN ILE LEU LEU GLY VAL ASN LYS          
SEQRES  26 A  543  ASP GLU GLY SER PHE PHE LEU LEU TYR GLY ALA PRO GLY          
SEQRES  27 A  543  PHE SER LYS ASP SER GLU SER LYS ILE SER ARG GLU ASP          
SEQRES  28 A  543  PHE MET SER GLY VAL LYS LEU SER VAL PRO HIS ALA ASN          
SEQRES  29 A  543  ASP LEU GLY LEU ASP ALA VAL THR LEU GLN TYR THR ASP          
SEQRES  30 A  543  TRP MET ASP ASP ASN ASN GLY ILE LYS ASN ARG ASP GLY          
SEQRES  31 A  543  LEU ASP ASP ILE VAL GLY ASP HIS ASN VAL ILE CYS PRO          
SEQRES  32 A  543  LEU MET HIS PHE VAL ASN LYS TYR THR LYS PHE GLY ASN          
SEQRES  33 A  543  GLY THR TYR LEU TYR PHE PHE ASN HIS ARG ALA SER ASN          
SEQRES  34 A  543  LEU VAL TRP PRO GLU TRP MET GLY VAL ILE HIS GLY TYR          
SEQRES  35 A  543  GLU ILE GLU PHE VAL PHE GLY LEU PRO LEU VAL LYS GLU          
SEQRES  36 A  543  LEU ASN TYR THR ALA GLU GLU GLU ALA LEU SER ARG ARG          
SEQRES  37 A  543  ILE MET HIS TYR TRP ALA THR PHE ALA LYS THR GLY ASN          
SEQRES  38 A  543  PRO ASN GLU PRO HIS SER GLN GLU SER LYS TRP PRO LEU          
SEQRES  39 A  543  PHE THR THR LYS GLU GLN LYS PHE ILE ASP LEU ASN THR          
SEQRES  40 A  543  GLU PRO MET LYS VAL HIS GLN ARG LEU ARG VAL GLN MET          
SEQRES  41 A  543  CYS VAL PHE TRP ASN GLN PHE LEU PRO LYS LEU LEU ASN          
SEQRES  42 A  543  ALA THR ALA CYS ASP GLY GLU LEU SER SER                      
MODRES 1SOM ASN A   59  ASN  GLYCOSYLATION SITE                                 
MODRES 1SOM ASN A  416  ASN  GLYCOSYLATION SITE                                 
HET    NAG  A 544      14                                                       
HET    NAG  A 545      14                                                       
HET    UNX  A1000       1                                                       
HET    UNX  A1001       1                                                       
HET    UNX  A1002       1                                                       
HET    UNX  A1003       1                                                       
HET    UNX  A1004       1                                                       
HET    UNX  A1005       1                                                       
HET    UNX  A1006       1                                                       
HET    UNX  A1007       1                                                       
HET    UNX  A1008       1                                                       
HET    UNX  A1009       1                                                       
HET    VXA  A1010       4                                                       
HETNAM     NAG 2-ACETAMIDO-2-DEOXY-BETA-D-GLUCOPYRANOSE                         
HETNAM     UNX UNKNOWN ATOM OR ION                                              
HETNAM     VXA METHYLPHOSPHONIC ACID ESTER GROUP                                
HETSYN     NAG N-ACETYL-BETA-D-GLUCOSAMINE; 2-ACETAMIDO-2-DEOXY-BETA-           
HETSYN   2 NAG  D-GLUCOSE; 2-ACETAMIDO-2-DEOXY-D-GLUCOSE; 2-ACETAMIDO-          
HETSYN   3 NAG  2-DEOXY-GLUCOSE; N-ACETYL-D-GLUCOSAMINE                         
FORMUL   2  NAG    2(C8 H15 N O6)                                               
FORMUL   4  UNX    10(X)                                                        
FORMUL  14  VXA    C H4 O2 P 1-                                                 
FORMUL  15  HOH   *184(H2 O)                                                    
HELIX    1  1A SER A   79  ASN A   85  1                                   7    
HELIX    2  2A GLY A  132  GLU A  139  1                                   8    
HELIX    3  3A VAL A  168  ASN A  183  1                                  16    
HELIX    4  4A SER A  200  LEU A  211  1                                  12    
HELIX    5  5A VAL A  238  LEU A  252  1                                  15    
HELIX    6  6A ASP A  259  GLU A  268  1                                  10    
HELIX    7  7A PRO A  271  GLU A  278  1                                   8    
HELIX    8  8A LEU A  305  SER A  311  1                                   7    
HELIX    9  9A SER A  329  GLY A  335  1                                   7    
HELIX   10 10A ARG A  349  VAL A  360  1                                  12    
HELIX   11 11A ASP A  365  THR A  376  1                                  12    
HELIX   12 12A GLY A  384  TYR A  411  1                                  28    
HELIX   13 13A GLU A  443  PHE A  448  1                                   6    
HELIX   14 14A ALA A  460  THR A  479  1                                  20    
HELIX   15 15A VAL A  518  THR A  535  1                                  18    
SHEET    1   A 3 LEU A   6  THR A  10  0                                        
SHEET    2   A 3 GLY A  13  MET A  16 -1  N  VAL A  15   O  VAL A   8           
SHEET    3   A 3 VAL A  57  ALA A  60  1  N  TRP A  58   O  LYS A  14           
SHEET    1   B11 MET A  16  PRO A  21  0                                        
SHEET    2   B11 HIS A  26  PRO A  34 -1  O  ALA A  29   N  THR A  18           
SHEET    3   B11 TYR A  96  PRO A 102 -1  N  ILE A  99   O  PHE A  30           
SHEET    4   B11 VAL A 142  SER A 147 -1  N  LEU A 143   O  TRP A 100           
SHEET    5   B11 THR A 109  TYR A 116  1  N  MET A 112   O  VAL A 142           
SHEET    6   B11 THR A 193  GLU A 199  1  O  THR A 195   N  VAL A 113           
SHEET    7   B11 ARG A 220  SER A 226  1  N  ILE A 223   O  ILE A 196           
SHEET    8   B11 GLN A 318  ASN A 324  1  N  GLY A 322   O  LEU A 224           
SHEET    9   B11 GLY A 417  PHE A 423  1  N  TYR A 421   O  LEU A 321           
SHEET   10   B11 PHE A 502  LEU A 505  1  N  ILE A 503   O  LEU A 420           
SHEET   11   B11 MET A 510  GLN A 514 -1  N  HIS A 513   O  PHE A 502           
SSBOND   1 CYS A   67    CYS A   94                          1555   1555  2.06  
SSBOND   2 CYS A  254    CYS A  265                          1555   1555  2.04  
SSBOND   3 CYS A  402    CYS A  521                          1555   1555  2.03  
LINK         ND2 ASN A  59                 C1  NAG A 545     1555   1555  1.46  
LINK         OG  SER A 200                 P1  VXA A1010     1555   1555  1.53  
LINK         ND2 ASN A 416                 C1  NAG A 544     1555   1555  1.44  
CISPEP   1 SER A  103    PRO A  104          0         1.35                     
SITE     1 CAT  3 SER A 200  GLU A 327  HIS A 440                               
CRYST1  111.560  111.560  137.002  90.00  90.00 120.00 P 31 2 1      6          
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      0.008964  0.005175  0.000000        0.00000                         
SCALE2      0.000000  0.010350  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007299        0.00000