PDB Short entry for 2ACE
HEADER    SERINE HYDROLASE                        23-JUN-96   2ACE              
TITLE     NATIVE ACETYLCHOLINESTERASE (E.C. 3.1.1.7) FROM TORPEDO CALIFORNICA   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ACETYLCHOLINESTERASE;                                      
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 3.1.1.7                                                          
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, NEUROTRANSMITTER CLEAVAGE, CATALYTIC TRIAD,         
KEYWDS   2 ALPHA/BETA HYDROLASE                                                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.HAREL,M.L.RAVES,I.SILMAN,J.L.SUSSMAN                                
REVDAT   4   22-JUN-16 2ACE    1       REMARK VERSN                             
REVDAT   3   24-FEB-09 2ACE    1       VERSN                                    
REVDAT   2   01-APR-03 2ACE    1       JRNL                                     
REVDAT   1   08-NOV-96 2ACE    0                                                
SPRSDE     08-NOV-96 2ACE      1ACE                                             
JRNL        AUTH   M.L.RAVES,M.HAREL,Y.-P.PANG,I.SILMAN,A.P.KOZIKOWSKI,         
JRNL        AUTH 2 J.L.SUSSMAN                                                  
JRNL        TITL   STRUCTURE OF ACETYLCHOLINESTERASE COMPLEXED WITH THE         
JRNL        TITL 2 NOOTROPIC ALKALOID, (-)-HUPERZINE A.                         
JRNL        REF    NAT.STRUCT.BIOL.              V.   4    57 1997              
JRNL        REFN                   ISSN 1072-8368                               
JRNL        PMID   8989325                                                      
JRNL        DOI    10.1038/NSB0197-57                                           
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   G.BUCHT,K.HJALMARSSON                                        
REMARK   1  TITL   RESIDUES IN TORPEDO CALIFORNICA ACETYLCHOLINESTERASE         
REMARK   1  TITL 2 NECESSARY FOR PROCESSING TO A GLYCOSYL                       
REMARK   1  TITL 3 PHOSPHATIDYLINOSITOL-ANCHORED FORM                           
REMARK   1  REF    BIOCHIM.BIOPHYS.ACTA          V.1292   223 1996              
REMARK   1  REFN                   ISSN 0006-3002                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   P.H.AXELSEN,M.HAREL,I.SILMAN,J.L.SUSSMAN                     
REMARK   1  TITL   STRUCTURE AND DYNAMICS OF THE ACTIVE SITE GORGE OF           
REMARK   1  TITL 2 ACETYLCHOLINESTERASE: SYNERGISTIC USE OF MOLECULAR DYNAMICS  
REMARK   1  TITL 3 SIMULATION AND X-RAY CRYSTALLOGRAPHY                         
REMARK   1  REF    PROTEIN SCI.                  V.   3   188 1994              
REMARK   1  REFN                   ISSN 0961-8368                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   M.HAREL,I.SCHALK,L.EHRET-SABATIER,F.BOUET,M.GOELDNER,        
REMARK   1  AUTH 2 C.HIRTH,P.H.AXELSEN,I.SILMAN,J.L.SUSSMAN                     
REMARK   1  TITL   QUATERNARY LIGAND BINDING TO AROMATIC RESIDUES IN THE        
REMARK   1  TITL 2 ACTIVE-SITE GORGE OF ACETYLCHOLINESTERASE                    
REMARK   1  REF    PROC.NATL.ACAD.SCI.USA        V.  90  9031 1993              
REMARK   1  REFN                   ISSN 0027-8424                               
REMARK   1 REFERENCE 4                                                          
REMARK   1  AUTH   J.L.SUSSMAN,M.HAREL,F.FROLOW,C.OEFNER,A.GOLDMAN,L.TOKER,     
REMARK   1  AUTH 2 I.SILMAN                                                     
REMARK   1  TITL   ATOMIC STRUCTURE OF ACETYLCHOLINESTERASE FROM TORPEDO        
REMARK   1  TITL 2 CALIFORNICA: A PROTOTYPIC ACETYLCHOLINE-BINDING PROTEIN      
REMARK   1  REF    SCIENCE                       V. 253   872 1991              
REMARK   1  REFN                   ISSN 0036-8075                               
REMARK   1 REFERENCE 5                                                          
REMARK   1  AUTH   J.L.SUSSMAN,M.HAREL,F.FROLOW,L.VARON,L.TOKER,A.H.FUTERMAN,   
REMARK   1  AUTH 2 I.SILMAN                                                     
REMARK   1  TITL   PURIFICATION AND CRYSTALLIZATION OF A DIMERIC FORM OF        
REMARK   1  TITL 2 ACETYLCHOLINESTERASE FROM TORPEDO CALIFORNICA SUBSEQUENT TO  
REMARK   1  TITL 3 SOLUBILIZATION WITH PHOSPHATIDYLINOSITOL-SPECIFIC            
REMARK   1  TITL 4 PHOSPHOLIPASE C                                              
REMARK   1  REF    J.MOL.BIOL.                   V. 203   821 1988              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 6                                                          
REMARK   1  AUTH   M.SCHUMACHER,S.CAMP,Y.MAULET,M.NEWTON,K.MACPHEE-QUIGLEY,     
REMARK   1  AUTH 2 S.S.TAYLOR,T.FRIEDMANN,P.TAYLOR                              
REMARK   1  TITL   PRIMARY STRUCTURE OF TORPEDO CALIFORNICA                     
REMARK   1  TITL 2 ACETYLCHOLINESTERASE DEDUCED FROM ITS CDNA SEQUENCE          
REMARK   1  REF    NATURE                        V. 319   407 1986              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.1                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
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)   (%) : 96.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 30035                          
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) : 0.199                           
REMARK   3   FREE R VALUE                     : 0.258                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.200                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1555                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.006                           
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) : 2.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.61                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.30                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 3181                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3080                       
REMARK   3   BIN FREE R VALUE                    : 0.3900                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.20                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 167                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.025                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4143                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 10                                      
REMARK   3   SOLVENT ATOMS            : 204                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 33.90                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 24.50                          
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) : 0.25                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.27                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 8.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.33                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.016                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.900                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 24.200                          
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.600                           
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) : 1.410 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.260 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.090 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.120 ; 2.500                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PARHCSDX.PRO                                   
REMARK   3  PARAMETER FILE  2  : PARAM11.WAT                                    
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPHCSDX.PRO                                   
REMARK   3  TOPOLOGY FILE  2   : TOPH11.WAT                                     
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  THE NATURAL SUBSTRATE ACETYLCHOLINE, IN AN ALL-TRANS                
REMARK   3  CONFORMATION, HAS BEEN MANUALLY DOCKED INTO THE ACTIVE              
REMARK   3  SITE, COVALENTLY BOUND TO SER 200 IN A TETRAHEDRAL                  
REMARK   3  INTERMEDIATE CONFORMATION.  THE ACETYLCHOLINE IS A MODEL,           
REMARK   3  NOT DERIVED FROM THE EXPERIMENTAL DATA.                             
REMARK   4                                                                      
REMARK   4 2ACE COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : OCT-93                             
REMARK 200  TEMPERATURE           (KELVIN) : 273                                
REMARK 200  PH                             : 5.8                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : EMBL/DESY, HAMBURG                 
REMARK 200  BEAMLINE                       : X11                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.92                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 46243                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.250                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 25.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.6                               
REMARK 200  DATA REDUNDANCY                : 1.900                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.09500                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 7.4000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.25                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.33                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 96.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.80                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.71300                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 0.900                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: X-PLOR 3.1                                            
REMARK 200 STARTING MODEL: PDB ENTRY 1ACE                                       
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% PEG    
REMARK 280  200, 100 MM MES, PH 5.8, AT 4 DEG., TEMPERATURE 277K                
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       45.56667            
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       91.13333            
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       91.13333            
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       45.56667            
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 300 REMARK: TORPEDO CALIFONICA ACETYLCHOLINESTERASE IS A G2 DIMER IN     
REMARK 300 SOLUTION (SEE SUSSMAN 1988).  THE ASYMMETRIC UNIT CONTAINS           
REMARK 300 A MONOMER, WITH THE CRYSTALLOGRAPHIC TWO-FOLD AXIS RELATING          
REMARK 300 THE TWO MONOMERS IN A DIMER.                                         
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: 2770 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 35600 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: 1.0 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      136.70000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A 732  LIES ON A SPECIAL POSITION.                          
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 THERE IS RECENT EVIDENCE (SEE BUCHT 1996) THAT THE GPI               
REMARK 400 ANCHOR IS ATTACHED TO EITHER SER 543 OR SER 544, NOT TO              
REMARK 400 CYS 537.                                                             
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     PRO A   485                                                      
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 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     HIS A  26    ND1  CD2  CE1  NE2                                  
REMARK 470     ASN A  42    CG   OD1  ND2                                       
REMARK 470     ARG A  46    CZ   NH1  NH2                                       
REMARK 470     GLU A  89    CD   OE1  OE2                                       
REMARK 470     GLN A 162    OE1  NE2                                            
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     LYS A 270    CE   NZ                                             
REMARK 470     GLU A 344    OE1  OE2                                            
REMARK 470     GLU A 350    OE1  OE2                                            
REMARK 470     LYS A 357    NZ                                                  
REMARK 470     ASP A 365    OD1  OD2                                            
REMARK 470     LYS A 413    CD   CE   NZ                                        
REMARK 470     LYS A 491    CD   CE   NZ                                        
REMARK 470     LYS A 498    CG   CD   CE   NZ                                   
REMARK 470     GLU A 499    OE1  OE2                                            
REMARK 470     GLU A 508    CD   OE1  OE2                                       
REMARK 470     LYS A 511    CD   CE   NZ                                        
REMARK 470     ARG A 515    CZ   NH1  NH2                                       
REMARK 470     GLN A 526    OE1  NE2                                            
REMARK 470     ASN A 533    CG   OD1  ND2                                       
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   O7   ACH A   998     O    HOH A   682              0.63            
REMARK 500   C8   ACH A   998     O    HOH A   679              0.90            
REMARK 500   N1   ACH A   998     O    HOH A   679              0.94            
REMARK 500   C5   ACH A   998     O    HOH A   682              1.19            
REMARK 500   C9   ACH A   998     O    HOH A   678              1.51            
REMARK 500   C10  ACH A   998     O    HOH A   679              1.64            
REMARK 500   O4   ACH A   998     O    HOH A   682              1.79            
REMARK 500   C10  ACH A   998     O    HOH A   633              1.89            
REMARK 500   C9   ACH A   998     O    HOH A   679              1.91            
REMARK 500   N1   ACH A   998     O    HOH A   678              2.10            
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    ASP A 285   N   -  CA  -  C   ANGL. DEV. = -17.3 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    LEU A  23       64.91     21.26                                   
REMARK 500    SER A  25     -165.07   -179.91                                   
REMARK 500    PRO A  39       36.58    -72.99                                   
REMARK 500    PHE A  45      -16.67     81.89                                   
REMARK 500    PRO A  53      172.82    -59.83                                   
REMARK 500    ALA A  60       51.60   -100.03                                   
REMARK 500    SER A 108       77.53   -157.93                                   
REMARK 500    PHE A 120       -5.33     69.11                                   
REMARK 500    LEU A 158       75.01   -104.79                                   
REMARK 500    ALA A 164       76.82   -154.26                                   
REMARK 500    PRO A 191        3.06    -65.03                                   
REMARK 500    THR A 193       51.11   -143.00                                   
REMARK 500    SER A 200     -116.36     60.93                                   
REMARK 500    PHE A 288       43.06     70.31                                   
REMARK 500    GLU A 299      -68.79   -121.36                                   
REMARK 500    ASN A 313       68.89    -68.95                                   
REMARK 500    THR A 317     -163.08   -170.01                                   
REMARK 500    ASP A 326       79.74   -119.76                                   
REMARK 500    ASP A 380       50.76   -172.16                                   
REMARK 500    VAL A 400      -60.51   -133.33                                   
REMARK 500    PRO A 451        1.07    -56.58                                   
REMARK 500    GLU A 455        7.10    -65.41                                   
REMARK 500    THR A 507        1.96    -62.55                                   
REMARK 500    MET A 510      158.30    -44.88                                   
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  63         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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     ACH A   998                                                      
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: CAT                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: CATALYTIC TRIAD.                                   
DBREF  2ACE A    1   537  UNP    P04058   ACES_TORCA      22    558             
SEQRES   1 A  537  ASP ASP HIS SER GLU LEU LEU VAL ASN THR LYS SER GLY          
SEQRES   2 A  537  LYS VAL MET GLY THR ARG VAL PRO VAL LEU SER SER HIS          
SEQRES   3 A  537  ILE SER ALA PHE LEU GLY ILE PRO PHE ALA GLU PRO PRO          
SEQRES   4 A  537  VAL GLY ASN MET ARG PHE ARG ARG PRO GLU PRO LYS LYS          
SEQRES   5 A  537  PRO TRP SER GLY VAL TRP ASN ALA SER THR TYR PRO ASN          
SEQRES   6 A  537  ASN CYS GLN GLN TYR VAL ASP GLU GLN PHE PRO GLY PHE          
SEQRES   7 A  537  SER GLY SER GLU MET TRP ASN PRO ASN ARG GLU MET SER          
SEQRES   8 A  537  GLU ASP CYS LEU TYR LEU ASN ILE TRP VAL PRO SER PRO          
SEQRES   9 A  537  ARG PRO LYS SER THR THR VAL MET VAL TRP ILE TYR GLY          
SEQRES  10 A  537  GLY GLY PHE TYR SER GLY SER SER THR LEU ASP VAL TYR          
SEQRES  11 A  537  ASN GLY LYS TYR LEU ALA TYR THR GLU GLU VAL VAL LEU          
SEQRES  12 A  537  VAL SER LEU SER TYR ARG VAL GLY ALA PHE GLY PHE LEU          
SEQRES  13 A  537  ALA LEU HIS GLY SER GLN GLU ALA PRO GLY ASN VAL GLY          
SEQRES  14 A  537  LEU LEU ASP GLN ARG MET ALA LEU GLN TRP VAL HIS ASP          
SEQRES  15 A  537  ASN ILE GLN PHE PHE GLY GLY ASP PRO LYS THR VAL THR          
SEQRES  16 A  537  ILE PHE GLY GLU SER ALA GLY GLY ALA SER VAL GLY MET          
SEQRES  17 A  537  HIS ILE LEU SER PRO GLY SER ARG ASP LEU PHE ARG ARG          
SEQRES  18 A  537  ALA ILE LEU GLN SER GLY SER PRO ASN CYS PRO TRP ALA          
SEQRES  19 A  537  SER VAL SER VAL ALA GLU GLY ARG ARG ARG ALA VAL GLU          
SEQRES  20 A  537  LEU GLY ARG ASN LEU ASN CYS ASN LEU ASN SER ASP GLU          
SEQRES  21 A  537  GLU LEU ILE HIS CYS LEU ARG GLU LYS LYS PRO GLN GLU          
SEQRES  22 A  537  LEU ILE ASP VAL GLU TRP ASN VAL LEU PRO PHE ASP SER          
SEQRES  23 A  537  ILE PHE ARG PHE SER PHE VAL PRO VAL ILE ASP GLY GLU          
SEQRES  24 A  537  PHE PHE PRO THR SER LEU GLU SER MET LEU ASN SER GLY          
SEQRES  25 A  537  ASN PHE LYS LYS THR GLN ILE LEU LEU GLY VAL ASN LYS          
SEQRES  26 A  537  ASP GLU GLY SER PHE PHE LEU LEU TYR GLY ALA PRO GLY          
SEQRES  27 A  537  PHE SER LYS ASP SER GLU SER LYS ILE SER ARG GLU ASP          
SEQRES  28 A  537  PHE MET SER GLY VAL LYS LEU SER VAL PRO HIS ALA ASN          
SEQRES  29 A  537  ASP LEU GLY LEU ASP ALA VAL THR LEU GLN TYR THR ASP          
SEQRES  30 A  537  TRP MET ASP ASP ASN ASN GLY ILE LYS ASN ARG ASP GLY          
SEQRES  31 A  537  LEU ASP ASP ILE VAL GLY ASP HIS ASN VAL ILE CYS PRO          
SEQRES  32 A  537  LEU MET HIS PHE VAL ASN LYS TYR THR LYS PHE GLY ASN          
SEQRES  33 A  537  GLY THR TYR LEU TYR PHE PHE ASN HIS ARG ALA SER ASN          
SEQRES  34 A  537  LEU VAL TRP PRO GLU TRP MET GLY VAL ILE HIS GLY TYR          
SEQRES  35 A  537  GLU ILE GLU PHE VAL PHE GLY LEU PRO LEU VAL LYS GLU          
SEQRES  36 A  537  LEU ASN TYR THR ALA GLU GLU GLU ALA LEU SER ARG ARG          
SEQRES  37 A  537  ILE MET HIS TYR TRP ALA THR PHE ALA LYS THR GLY ASN          
SEQRES  38 A  537  PRO ASN GLU PRO HIS SER GLN GLU SER LYS TRP PRO LEU          
SEQRES  39 A  537  PHE THR THR LYS GLU GLN LYS PHE ILE ASP LEU ASN THR          
SEQRES  40 A  537  GLU PRO MET LYS VAL HIS GLN ARG LEU ARG VAL GLN MET          
SEQRES  41 A  537  CYS VAL PHE TRP ASN GLN PHE LEU PRO LYS LEU LEU ASN          
SEQRES  42 A  537  ALA THR ALA CYS                                              
HET    ACH  A 998      10                                                       
HETNAM     ACH ACETYLCHOLINE                                                    
FORMUL   2  ACH    C7 H16 N O2 1+                                               
FORMUL   3  HOH   *204(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  VAL A  400  1                                  17    
HELIX   13 13A VAL A  400  TYR A  411  1                                  12    
HELIX   14 14A GLU A  443  PHE A  448  1                                   6    
HELIX   15 15A ALA A  460  THR A  479  1                                  20    
HELIX   16 16A 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  2.02  
SSBOND   2 CYS A  254    CYS A  265                          1555   1555  2.00  
SSBOND   3 CYS A  402    CYS A  521                          1555   1555  2.02  
LINK         C5  ACH A 998                 OG  SER A 200     1555   1555  1.48  
CISPEP   1 SER A  103    PRO A  104          0         0.18                     
SITE     1 CAT  3 SER A 200  GLU A 327  HIS A 440                               
CRYST1  112.410  112.410  136.700  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      0.008896  0.005136  0.000000        0.00000                         
SCALE2      0.000000  0.010272  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007315        0.00000