HEADER SERINE PROTEASE 01-SEP-98 1BTU TITLE PORCINE PANCREATIC ELASTASE COMPLEXED WITH (3S, 4R)-1- TITLE 2 TOLUENESULPHONYL-3-ETHYL-AZETIDIN-2-ONE-4-CARBOXYLIC ACID COMPND MOL_ID: 1; COMPND 2 MOLECULE: ELASTASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: PPE; COMPND 5 EC: 3.4.21.36; COMPND 6 OTHER_DETAILS: PORCINE PANCREATIC ELASTASE SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 3 ORGANISM_COMMON: PIG; SOURCE 4 ORGANISM_TAXID: 9823; SOURCE 5 ORGAN: PANCREAS KEYWDS HYDROLASE, SERINE PROTEINASE, SERINE PROTEASE EXPDTA X-RAY DIFFRACTION AUTHOR R.C.WILMOUTH,I.J.CLIFTON,C.J.SCHOFIELD REVDAT 5 13-JUL-11 1BTU 1 VERSN REVDAT 4 23-JUN-09 1BTU 1 HETATM REVDAT 3 24-FEB-09 1BTU 1 VERSN REVDAT 2 01-APR-03 1BTU 1 JRNL REVDAT 1 16-FEB-99 1BTU 0 JRNL AUTH R.C.WILMOUTH,N.J.WESTWOOD,K.ANDERSON,W.BROWNLEE, JRNL AUTH 2 T.D.CLARIDGE,I.J.CLIFTON,G.J.PRITCHARD,R.T.APLIN, JRNL AUTH 3 C.J.SCHOFIELD JRNL TITL INHIBITION OF ELASTASE BY N-SULFONYLARYL BETA-LACTAMS: JRNL TITL 2 ANATOMY OF A STABLE ACYL-ENZYME COMPLEX. JRNL REF BIOCHEMISTRY V. 37 17506 1998 JRNL REFN ISSN 0006-2960 JRNL PMID 9860865 JRNL DOI 10.1021/BI9816249 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.C.WILMOUTH,I.J.CLIFTON,C.V.ROBINSON,P.L.ROACH,R.T.APLIN, REMARK 1 AUTH 2 N.J.WESTWOOD,J.HAJDU,C.J.SCHOFIELD REMARK 1 TITL STRUCTURE OF A SPECIFIC ACYL-ENZYME COMPLEX FORMED BETWEEN REMARK 1 TITL 2 BETA-CASOMORPHIN-7 AND PORCINE PANCREATIC ELASTASE REMARK 1 REF NAT.STRUCT.BIOL. V. 4 456 1997 REMARK 1 REFN ISSN 1072-8368 REMARK 1 REFERENCE 2 REMARK 1 AUTH W.B.KNIGHT,R.CHABIN,B.GREEN REMARK 1 TITL INHIBITION OF HUMAN SERINE PROTEASES BY SUBSTITUTED REMARK 1 TITL 2 2-AZETIDINONES REMARK 1 REF ARCH.BIOCHEM.BIOPHYS. V. 296 704 1992 REMARK 1 REFN ISSN 0003-9861 REMARK 1 REFERENCE 3 REMARK 1 AUTH W.B.KNIGHT,B.G.GREEN,R.M.CHABIN,P.GALE,A.L.MAYCOCK,H.WESTON, REMARK 1 AUTH 2 D.W.KUO,W.M.WESTLER,C.P.DORN,P.E.FINKE,W.K.HAGMANN,J.J.HALE, REMARK 1 AUTH 3 J.LIESCH,M.MACCOSS,M.A.NAVIA,S.K.SHAH,D.UNDERWOOD, REMARK 1 AUTH 4 J.B.DOHERTY REMARK 1 TITL SPECIFICITY, STABILITY, AND POTENCY OF MONOCYCLIC REMARK 1 TITL 2 BETA-LACTAM INHIBITORS OF HUMAN LEUCOCYTE ELASTASE REMARK 1 REF BIOCHEMISTRY V. 31 8160 1992 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 4 REMARK 1 AUTH R.A.FIRESTONE,P.L.BARKER,J.M.PISANO,B.M.ASHE,M.E.DAHLGREN REMARK 1 TITL MONOCYCLIC BETA-LACTAM INHIBITORS OF HUMAN LEUKOCYTE REMARK 1 TITL 2 ELASTASE REMARK 1 REF TETRAHEDRON V. 46 2255 1990 REMARK 1 REFN ISSN 0040-4020 REMARK 1 REFERENCE 5 REMARK 1 AUTH E.MEYER,G.COLE,R.RADHAKRISHNAN,O.EPP REMARK 1 TITL STRUCTURE OF NATIVE PORCINE PANCREATIC ELASTASE AT 1.65 A REMARK 1 TITL 2 RESOLUTION REMARK 1 REF ACTA CRYSTALLOGR.,SECT.B V. 44 26 1988 REMARK 1 REFN ISSN 0108-7681 REMARK 2 REMARK 2 RESOLUTION. 1.60 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97, X-PLOR REMARK 3 AUTHORS : G.M.SHELDRICK,BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.60 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 23.80 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.7 REMARK 3 CROSS-VALIDATION METHOD : FREE R REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.192 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.192 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.220 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 4.000 REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1168 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 29200 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : NULL REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE (F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1822 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 26 REMARK 3 SOLVENT ATOMS : 206 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : 2054.00 REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : 0.00 REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : 0 REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : 8219 REMARK 3 NUMBER OF RESTRAINTS : 7616 REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.017 REMARK 3 ANGLE DISTANCES (A) : 0.023 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000 REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : 0.025 REMARK 3 ZERO CHIRAL VOLUMES (A**3) : 0.059 REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : 0.074 REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : 0.006 REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : 0.000 REMARK 3 SIMILAR ADP COMPONENTS (A**2) : 0.036 REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : 0.000 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: MOEWS & KRETSINGER REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REFMAC ALSO USED REMARK 4 REMARK 4 1BTU COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 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 : MAY-96 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SRS REMARK 200 BEAMLINE : PX9.6 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.87 REMARK 200 MONOCHROMATOR : SI(111) REMARK 200 OPTICS : MIRRORS 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 : 29200 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.600 REMARK 200 RESOLUTION RANGE LOW (A) : 23.800 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.7 REMARK 200 DATA REDUNDANCY : 5.670 REMARK 200 R MERGE (I) : 0.05700 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 17.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.60 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.63 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.5 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.15700 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 8.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: RIGID BODY REFINEMENT REMARK 200 SOFTWARE USED: SHELXL-97, X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 33.20 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.86 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 5.0 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 X+1/2,-Y+1/2,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 25.28500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 37.36000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 28.96500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 37.36000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 25.28500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 28.96500 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 OG SER A 195 O6 2BL A 7 2.11 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 ASN A 245 C ASN A 245 OXT 0.350 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 164 CB - CG - OD1 ANGL. DEV. = 6.7 DEGREES REMARK 500 ARG A 188A NE - CZ - NH2 ANGL. DEV. = -3.3 DEGREES REMARK 500 GLN A 206 CA - CB - CG ANGL. DEV. = 14.2 DEGREES REMARK 500 TYR A 234 CB - CG - CD2 ANGL. DEV. = 5.3 DEGREES REMARK 500 TYR A 234 CG - CD2 - CE2 ANGL. DEV. = 6.9 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 TYR A 171 -112.41 -95.27 REMARK 500 SER A 214 -52.63 -126.45 REMARK 500 REMARK 500 REMARK: NULL REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 2BL A 7 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 260 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 70 OE1 REMARK 620 2 ASN A 72 O 84.7 REMARK 620 3 GLN A 75 O 159.5 86.8 REMARK 620 4 ASN A 77 OD1 65.2 90.8 96.5 REMARK 620 5 GLU A 80 OE2 93.0 177.6 95.2 87.6 REMARK 620 6 GLU A 70 OE2 48.0 80.5 147.9 113.0 98.5 REMARK 620 7 HOH A 483 O 119.0 91.0 79.7 175.6 90.7 71.2 REMARK 620 N 1 2 3 4 5 6 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CATALYTIC SITE REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 260 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 270 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE 2BL A 7 DBREF 1BTU A 16 245 UNP P00772 ELA1_PIG 27 266 SEQADV 1BTU ASN A 77 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 CA A 260 1 HET SO4 A 270 5 HET 2BL A 7 20 HETNAM CA CALCIUM ION HETNAM SO4 SULFATE ION HETNAM 2BL (3R)-3-ETHYL-N-[(4-METHYLPHENYL)SULFONYL]-L-ASPARTIC HETNAM 2 2BL ACID FORMUL 2 CA CA 2+ FORMUL 3 SO4 O4 S 2- FORMUL 4 2BL C13 H17 N O6 S FORMUL 5 HOH *206(H2 O) HELIX 1 1 ALA A 56 VAL A 59 5 4 HELIX 2 2 VAL A 99 ALA A 99B 5 3 HELIX 3 3 TYR A 165 CYS A 168 1 4 HELIX 4 4 GLY A 173 THR A 175 5 3 HELIX 5 5 VAL A 231 ALA A 233 5 3 HELIX 6 6 ILE A 235 ALA A 243 1 9 SHEET 1 A 7 GLN A 81 GLY A 84 0 SHEET 2 A 7 PHE A 65 VAL A 68 -1 N VAL A 68 O GLN A 81 SHEET 3 A 7 GLN A 30 SER A 36A-1 N GLN A 34 O ARG A 65A SHEET 4 A 7 SER A 37 ARG A 48 -1 N GLY A 44 O ILE A 31 SHEET 5 A 7 TRP A 51 THR A 54 -1 N MET A 53 O THR A 45 SHEET 6 A 7 ALA A 104 LEU A 108 -1 N LEU A 106 O VAL A 52 SHEET 7 A 7 VAL A 85 VAL A 90 -1 N VAL A 89 O LEU A 105 SHEET 1 B 6 GLN A 156 TYR A 159 0 SHEET 2 B 6 CYS A 136 GLY A 140 -1 N GLY A 140 O GLN A 156 SHEET 3 B 6 PRO A 198 VAL A 203 -1 N HIS A 200 O TYR A 137 SHEET 4 B 6 GLN A 206 PHE A 215 -1 N GLY A 211 O LEU A 199 SHEET 5 B 6 THR A 226 ARG A 230 -1 N THR A 229 O VAL A 212 SHEET 6 B 6 MET A 180 ALA A 183 -1 N ALA A 183 O THR A 226 SSBOND 1 CYS A 42 CYS A 58 1555 1555 2.04 SSBOND 2 CYS A 136 CYS A 201 1555 1555 2.03 SSBOND 3 CYS A 168 CYS A 182 1555 1555 2.00 SSBOND 4 CYS A 191 CYS A 220 1555 1555 2.02 LINK CA CA A 260 OE1 GLU A 70 1555 1555 2.30 LINK CA CA A 260 O ASN A 72 1555 1555 2.24 LINK CA CA A 260 O GLN A 75 1555 1555 2.33 LINK CA CA A 260 OD1 ASN A 77 1555 1555 2.35 LINK CA CA A 260 OE2 GLU A 80 1555 1555 2.37 LINK CA CA A 260 OE2 GLU A 70 1555 1555 2.82 LINK CA CA A 260 O HOH A 483 1555 1555 2.38 LINK C1 2BL A 7 OG SER A 195 1555 1555 1.27 SITE 1 CAT 3 HIS A 57 ASP A 102 SER A 195 SITE 1 AC1 6 GLU A 70 ASN A 72 GLN A 75 ASN A 77 SITE 2 AC1 6 GLU A 80 HOH A 483 SITE 1 AC2 9 GLY A 127 ARG A 145 ARG A 230 SER A 232 SITE 2 AC2 9 ALA A 233 HOH A 327 HOH A 410 HOH A 452 SITE 3 AC2 9 HOH A 471 SITE 1 AC3 14 HIS A 57 VAL A 99 CYS A 191 GLN A 192 SITE 2 AC3 14 GLY A 193 SER A 195 THR A 213 SER A 214 SITE 3 AC3 14 PHE A 215 VAL A 216 HOH A 317 HOH A 433 SITE 4 AC3 14 HOH A 462 HOH A 484 CRYST1 50.570 57.930 74.720 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 0.019775 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017262 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013383 0.00000