HEADER    HYDROLASE                               04-FEB-94   1ESB              
TITLE     DIRECT STRUCTURE OBSERVATION OF AN ACYL-ENZYME INTERMEDIATE IN THE    
TITLE    2 HYDROLYSIS OF AN ESTER SUBSTRATE BY ELASTASE                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PORCINE PANCREATIC ELASTASE;                               
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 3.4.21.36;                                                       
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: SUS SCROFA;                                     
SOURCE   3 ORGANISM_COMMON: PIG;                                                
SOURCE   4 ORGANISM_TAXID: 9823                                                 
KEYWDS    HYDROLASE, SERINE PROTEINASE                                          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    X.DING,B.RASMUSSEN,G.A.PETSKO,D.RINGE                                 
REVDAT   5   30-OCT-24 1ESB    1       REMARK                                   
REVDAT   4   05-JUN-24 1ESB    1       REMARK SEQADV LINK                       
REVDAT   3   13-JUL-11 1ESB    1       VERSN                                    
REVDAT   2   24-FEB-09 1ESB    1       VERSN                                    
REVDAT   1   30-APR-94 1ESB    0                                                
JRNL        AUTH   X.DING,B.F.RASMUSSEN,G.A.PETSKO,D.RINGE                      
JRNL        TITL   DIRECT STRUCTURAL OBSERVATION OF AN ACYL-ENZYME INTERMEDIATE 
JRNL        TITL 2 IN THE HYDROLYSIS OF AN ESTER SUBSTRATE BY ELASTASE.         
JRNL        REF    BIOCHEMISTRY                  V.  33  9285 1994              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   8049229                                                      
JRNL        DOI    10.1021/BI00197A032                                          
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   L.H.TAKAHASHI,R.RADHAKRISHNAN,R.E.ROSENFIELD JUNIOR,         
REMARK   1  AUTH 2 E.F.MEYER JUNIOR,D.A.TRAINOR                                 
REMARK   1  TITL   CRYSTAL STRUCTURE OF THE COVALENT COMPLEX FORMED BY A        
REMARK   1  TITL 2 PEPTIDYL ALPHA,ALPHA-DIFLUORO-BETA-KETO AMIDE WITH PORCINE   
REMARK   1  TITL 3 PANCREATIC ELASTASE AT 1.78 ANGSTROMS RESOLUTION             
REMARK   1  REF    J.AM.CHEM.SOC.                V. 111  3368 1989              
REMARK   1  REFN                   ISSN 0002-7863                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   E.MEYER,G.COLE,R.RADHAKRISHNAN,O.EPP                         
REMARK   1  TITL   STRUCTURE OF NATIVE PROCINE PANCREATIC ELASTASE AT 1.65      
REMARK   1  TITL 2 ANGSTROMS RESOLUTION                                         
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.B      V.  44    26 1988              
REMARK   1  REFN                   ISSN 0108-7681                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   M.N.G.JAMES,A.R.SIELECKI,G.D.BRAYER,L.T.J.DELBAERE           
REMARK   1  TITL   STRUCTURES OF PRODUCT AND INHIBITOR COMPLEXES OF             
REMARK   1  TITL 2 STREPTOMYCES GRISEUS PROTEASE A AT 1.8 ANGSTROMS RESOLUTION  
REMARK   1  REF    J.MOL.BIOL.                   V. 144    43 1980              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 4                                                          
REMARK   1  AUTH   A.L.FINK,A.I.AHMED                                           
REMARK   1  TITL   FORMATION OF STABLE CRYSTALLINE ENZYME-SUBSTRATE             
REMARK   1  TITL 2 INTERMEDIATES AT SUB-ZERO TEMPERATURES                       
REMARK   1  REF    NATURE                        V. 263   294 1976              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   1 REFERENCE 5                                                          
REMARK   1  AUTH   T.ALBER,G.A.PETSKO,D.TSERNOGLOU                              
REMARK   1  TITL   CRYSTAL STRUCTURE OF ELASTASE-SUBSTRATE COMPLEX AT-55 DEGC   
REMARK   1  REF    NATURE                        V. 263   297 1976              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.30 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 1.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : NULL                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.210                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1821                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 21                                      
REMARK   3   SOLVENT ATOMS            : 126                                     
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) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1ESB COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000173146.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 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: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.42                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.14                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
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       26.01000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       37.33000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       28.61000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       37.33000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       26.01000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       28.61000            
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: MONOMERIC                         
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 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   N    GLY A   213     O    HOH A   349              1.96            
REMARK 500   O    SER A   122     O    HOH A   393              2.07            
REMARK 500   O    HOH A   391     O    HOH A   394              2.11            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    GLY A    82     O    HOH A   502     4566     1.44            
REMARK 500   O1   SO4 A   290     O    HOH A   513     2665     1.56            
REMARK 500   O    ASN A    81     NH1  ARG A   196     4566     1.70            
REMARK 500   O    HOH A   520     O    HOH A   558     4566     1.99            
REMARK 500   NH2  ARG A   131     ND2  ASN A   153     2665     2.15            
REMARK 500   OE1  GLN A   155     OD1  ASN A   185     2664     2.16            
REMARK 500   NE   ARG A   131     ND2  ASN A   153     2665     2.17            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    HIS A  43   NE2   HIS A  43   CD2    -0.067                       
REMARK 500    HIS A 208   NE2   HIS A 208   CD2    -0.082                       
REMARK 500    HIS A 218   NE2   HIS A 218   CD2    -0.077                       
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    ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   5.2 DEGREES          
REMARK 500    ARG A  24   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    TRP A  27   CE2 -  CD2 -  CG  ANGL. DEV. =  -4.8 DEGREES          
REMARK 500    PRO A  28   C   -  N   -  CA  ANGL. DEV. =  10.0 DEGREES          
REMARK 500    ARG A  36   NE  -  CZ  -  NH1 ANGL. DEV. =   3.1 DEGREES          
REMARK 500    TRP A  41   CD1 -  CG  -  CD2 ANGL. DEV. =   7.9 DEGREES          
REMARK 500    TRP A  41   CG  -  CD1 -  NE1 ANGL. DEV. =  -6.8 DEGREES          
REMARK 500    TRP A  41   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.8 DEGREES          
REMARK 500    ARG A  51   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500    ARG A  51   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.6 DEGREES          
REMARK 500    ARG A  64   NE  -  CZ  -  NH1 ANGL. DEV. =   3.4 DEGREES          
REMARK 500    TRP A  98   CD1 -  CG  -  CD2 ANGL. DEV. =   5.5 DEGREES          
REMARK 500    TRP A  98   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.2 DEGREES          
REMARK 500    THR A 100   CA  -  CB  -  CG2 ANGL. DEV. =  -8.7 DEGREES          
REMARK 500    ARG A 131   CA  -  CB  -  CG  ANGL. DEV. =  14.6 DEGREES          
REMARK 500    TRP A 147   CD1 -  CG  -  CD2 ANGL. DEV. =   5.2 DEGREES          
REMARK 500    TRP A 147   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.0 DEGREES          
REMARK 500    ARG A 151   NE  -  CZ  -  NH1 ANGL. DEV. =   4.2 DEGREES          
REMARK 500    TRP A 179   CD1 -  CG  -  CD2 ANGL. DEV. =   7.6 DEGREES          
REMARK 500    TRP A 179   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.0 DEGREES          
REMARK 500    ARG A 196   NE  -  CZ  -  NH1 ANGL. DEV. =   3.1 DEGREES          
REMARK 500    ARG A 196   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    ARG A 226   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    VAL A 231   CG1 -  CB  -  CG2 ANGL. DEV. =  -9.7 DEGREES          
REMARK 500    ARG A 240   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.8 DEGREES          
REMARK 500    TRP A 247   CD1 -  CG  -  CD2 ANGL. DEV. =   6.6 DEGREES          
REMARK 500    TRP A 247   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.9 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    HIS A  75      -56.26   -134.87                                   
REMARK 500    PRO A  96      -33.96    -31.90                                   
REMARK 500    ASN A 121     -159.41   -159.62                                   
REMARK 500    TYR A 178     -107.38    -96.37                                   
REMARK 500    SER A 197      168.02    178.24                                   
REMARK 500    VAL A 211      114.33   -161.95                                   
REMARK 500    SER A 222      -51.69   -124.22                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 BBL IS COVALENTLY LINKED TO SER 203. THE P-NITROPHENYL GROUP         
REMARK 600 ORIGINALLY PRESENT IN BBL MOLECULE IS LEAVING DURING THE REACTION.   
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 280  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  74   OE1                                                    
REMARK 620 2 ASN A  76   O    72.6                                              
REMARK 620 3 GLN A  79   O   149.1  80.8                                        
REMARK 620 4 ASN A  81   OD1  68.0  76.5  90.9                                  
REMARK 620 5 GLU A  84   OE2  83.2 143.0 110.8  68.6                            
REMARK 620 N                    1     2     3     4                             
REMARK 700                                                                      
REMARK 700 SHEET                                                                
REMARK 700 THE SHEETS PRESENTED AS *S1* AND *S2* ON SHEET RECORDS               
REMARK 700 BELOW ARE ACTUALLY SIX-STRANDED BETA-BARRELS.  THIS IS               
REMARK 700 REPRESENTED BY SEVEN-STRANDED SHEETS IN WHICH THE FIRST AND          
REMARK 700 LAST STRAND OF EACH SHEET ARE IDENTICAL.                             
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: CAT                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: NULL                                               
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BBL A 256                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 280                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 290                 
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THE RESIDUE NUMBERING SCHEME FOR THE PROTEIN IS SEQUENTIAL           
REMARK 999 STARTING WITH VAL 16 AND ENDING WITH ASN 255.  THE                   
REMARK 999 CATALYTIC TRIAD IS COMPOSED OF SER 203, HIS 60 AND ASP 108           
REMARK 999 (DENOTED BY *SITE* BELOW).                                           
REMARK 999                                                                      
REMARK 999 SEQUENCE ADVISORY NOTICE:                                            
REMARK 999      DIFFERENCE BETWEEN SWISS-PROT AND PDB SEQUENCE.                 
REMARK 999                                                                      
REMARK 999      SWISS-PROT ENTRY NAME: EL1_PIG                                  
REMARK 999                                                                      
REMARK 999      SWISS-PROT              PDB ATOM RECORDS                        
REMARK 999      NAME SEQ                NAME  CHAIN  SEQ                        
REMARK 999      ASP  93                 ASN          81                         
REMARK 999                                                                      
REMARK 999 THE IDENTITY OF ASN 81 AGREES WITH THE SEQUENCE OF PDB               
REMARK 999 ENTRY 3EST,                                                          
DBREF  1ESB A   16   255  UNP    P00772   ELA1_PIG        27    266             
SEQADV 1ESB ASN A   81  UNP  P00772    ASP    92 CONFLICT                       
SEQRES   1 A  240  VAL VAL GLY GLY THR GLU ALA GLN ARG ASN SER TRP PRO          
SEQRES   2 A  240  SER GLN ILE SER LEU GLN TYR ARG SER GLY SER SER TRP          
SEQRES   3 A  240  ALA HIS THR CYS GLY GLY THR LEU ILE ARG GLN ASN TRP          
SEQRES   4 A  240  VAL MET THR ALA ALA HIS CYS VAL ASP ARG GLU LEU THR          
SEQRES   5 A  240  PHE ARG VAL VAL VAL GLY GLU HIS ASN LEU ASN GLN ASN          
SEQRES   6 A  240  ASN GLY THR GLU GLN TYR VAL GLY VAL GLN LYS ILE VAL          
SEQRES   7 A  240  VAL HIS PRO TYR TRP ASN THR ASP ASP VAL ALA ALA GLY          
SEQRES   8 A  240  TYR ASP ILE ALA LEU LEU ARG LEU ALA GLN SER VAL THR          
SEQRES   9 A  240  LEU ASN SER TYR VAL GLN LEU GLY VAL LEU PRO ARG ALA          
SEQRES  10 A  240  GLY THR ILE LEU ALA ASN ASN SER PRO CYS TYR ILE THR          
SEQRES  11 A  240  GLY TRP GLY LEU THR ARG THR ASN GLY GLN LEU ALA GLN          
SEQRES  12 A  240  THR LEU GLN GLN ALA TYR LEU PRO THR VAL ASP TYR ALA          
SEQRES  13 A  240  ILE CYS SER SER SER SER TYR TRP GLY SER THR VAL LYS          
SEQRES  14 A  240  ASN SER MET VAL CYS ALA GLY GLY ASP GLY VAL ARG SER          
SEQRES  15 A  240  GLY CYS GLN GLY ASP SER GLY GLY PRO LEU HIS CYS LEU          
SEQRES  16 A  240  VAL ASN GLY GLN TYR ALA VAL HIS GLY VAL THR SER PHE          
SEQRES  17 A  240  VAL SER ARG LEU GLY CYS ASN VAL THR ARG LYS PRO THR          
SEQRES  18 A  240  VAL PHE THR ARG VAL SER ALA TYR ILE SER TRP ILE ASN          
SEQRES  19 A  240  ASN VAL ILE ALA SER ASN                                      
HET    BBL  A 256      15                                                       
HET     CA  A 280       1                                                       
HET    SO4  A 290       5                                                       
HETNAM     BBL N-[(BENZYLOXY)CARBONYL]-L-ALANINE                                
HETNAM      CA CALCIUM ION                                                      
HETNAM     SO4 SULFATE ION                                                      
HETSYN     BBL N-BENZYLOXYCARBONYL-L-SERINE-BETALACTONE                         
FORMUL   2  BBL    C11 H13 N O4                                                 
FORMUL   3   CA    CA 2+                                                        
FORMUL   4  SO4    O4 S 2-                                                      
FORMUL   5  HOH   *126(H2 O)                                                    
HELIX    1  H1 ASP A  169  SER A  175  1                                   7    
HELIX    2  H1 TYR A  244  ASN A  255  1                                  12    
SHEET    1  S1 7 SER A  29  SER A  37  0                                        
SHEET    2  S1 7 SER A  40  ILE A  50 -1                                        
SHEET    3  S1 7 ASN A  53  ALA A  59 -1                                        
SHEET    4  S1 7 ASP A 108  GLN A 116 -1                                        
SHEET    5  S1 7 GLU A  84  HIS A  95 -1                                        
SHEET    6  S1 7 PHE A  68  GLY A  73 -1                                        
SHEET    7  S1 7 SER A  29  SER A  37 -1                                        
SHEET    1  S2 7 ASN A 139  THR A 150  0                                        
SHEET    2  S2 7 GLY A 154  VAL A 168 -1                                        
SHEET    3  S2 7 SER A 186  VAL A 195 -1                                        
SHEET    4  S2 7 ASN A 230  VAL A 241 -1                                        
SHEET    5  S2 7 HIS A 218  VAL A 224 -1                                        
SHEET    6  S2 7 SER A 203  CYS A 209 -1                                        
SHEET    7  S2 7 SER A 140  THR A 150 -1                                        
SHEET    1  S3 3 GLY A 154  ALA A 157  0                                        
SHEET    2  S3 3 TRP A 147  LEU A 149 -1                                        
SHEET    3  S3 3 GLN A 200  ASP A 202 -1                                        
SSBOND   1 CYS A   45    CYS A   61                          1555   1555  2.04  
SSBOND   2 CYS A  142    CYS A  209                          1555   1555  2.00  
SSBOND   3 CYS A  173    CYS A  189                          1555   1555  2.05  
SSBOND   4 CYS A  199    CYS A  229                          1555   1555  2.02  
LINK         OG  SER A 203                 CB2 BBL A 256     1555   1555  1.66  
LINK         OE1 GLU A  74                CA    CA A 280     1555   1555  2.72  
LINK         O   ASN A  76                CA    CA A 280     1555   1555  2.45  
LINK         O   GLN A  79                CA    CA A 280     1555   1555  2.36  
LINK         OD1 ASN A  81                CA    CA A 280     1555   1555  2.64  
LINK         OE2 GLU A  84                CA    CA A 280     1555   1555  2.47  
SITE     1 CAT  3 ASP A 108  HIS A  60  SER A 203                               
SITE     1 AC1  9 THR A  44  HIS A  60  GLN A 200  GLY A 201                    
SITE     2 AC1  9 ASP A 202  SER A 203  SER A 222  PHE A 223                    
SITE     3 AC1  9 HOH A 505                                                     
SITE     1 AC2  5 GLU A  74  ASN A  76  GLN A  79  ASN A  81                    
SITE     2 AC2  5 GLU A  84                                                     
SITE     1 AC3  5 GLY A 133  ARG A 151  ARG A 240  SER A 242                    
SITE     2 AC3  5 HOH A 513                                                     
CRYST1   52.020   57.220   74.660  90.00  90.00  90.00 P 21 21 21    4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.019223  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.017476  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013394        0.00000