HEADER CARBOXYPEPTIDASE 17-NOV-00 1HDQ TITLE CRYSTAL STRUCTURE OF BOVINE PANCREATIC CARBOXYPEPTIDASE A TITLE 2 COMPLEXED WITH D-N-HYDROXYAMINOCARBONYL PHENYLALANINE AT TITLE 3 2.3 A COMPND MOL_ID: 1; COMPND 2 MOLECULE: CARBOXYPEPTIDASE A; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.17.1 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS BOVIS; SOURCE 3 ORGANISM_COMMON: BOVINE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: PANCREAS KEYWDS CARBOXYPEPTIDASE, CPA, LBHB, INHIBITOR EXPDTA X-RAY DIFFRACTION AUTHOR J.H.CHO,N.-C.HA,S.J.CHUNG,D.H.KIM,K.Y.CHOI,B.-H.OH REVDAT 3 24-FEB-09 1HDQ 1 VERSN REVDAT 2 29-JUN-05 1HDQ 1 AUTHOR JRNL REVDAT 1 15-NOV-01 1HDQ 0 JRNL AUTH J.H.CHO,D.H.KIM,S.J.CHUNG,N.-C.HA,B.-H.OH,K.Y.CHOI JRNL TITL INSIGHT INTO THE STEREOCHEMISTRY IN THE INHIBITION JRNL TITL 2 OF CARBOXYPEPTIDASE A WITH N- JRNL TITL 3 (HYDROXYAMINOCARBONYL)PHENYLALANINE: BINDING MODES JRNL TITL 4 OF AN ENANTIOMERIC PAIR OF THE INHIBITOR TO JRNL TITL 5 CARBOXYPEPTIDASE A JRNL REF BIOORG.MED.CHEM. V. 10 2015 2002 JRNL REFN ISSN 0968-0896 JRNL PMID 11937361 JRNL DOI 10.1016/S0968-0896(01)00429-1 REMARK 2 REMARK 2 RESOLUTION. 2.3 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.3 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 100 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.0 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 96 REMARK 3 NUMBER OF REFLECTIONS : 12659 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) : 0.1388 REMARK 3 FREE R VALUE : 0.1744 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.0 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 : 2442 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 17 REMARK 3 SOLVENT ATOMS : 211 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.0058 REMARK 3 BOND ANGLES (DEGREES) : 1.17 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 PARAMETER FILE 2 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1HDQ COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 17-NOV-00. REMARK 100 THE PDBE ID CODE IS EBI-5555. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 297.0 REMARK 200 PH : 7.50 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 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 : 13199 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 96.0 REMARK 200 DATA REDUNDANCY : 2.500 REMARK 200 R MERGE (I) : 0.06000 REMARK 200 R SYM (I) : 0.06000 REMARK 200 FOR THE DATA SET : 33.0000 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 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): NULL REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): NULL REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,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 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 30.23250 REMARK 290 SMTRY3 2 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 300 REMARK 300 DETAILS:BIOLOGICAL_UNIT: MONOMER REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PQS 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 400 REMARK 400 COMPOUND REMARK 400 PEPTIDYL-L-AMINO ACID + H(2)O = PEPTIDE + L-AMINO ACID REMARK 400 THE ZYMOGEN IS SECRETED AS A TERNARY COMPLEX COMPOSED OF REMARK 400 PROCARBOXYPEPTIDASE A, REMARK 400 CHYMOTRYPSINOGEN C AND REMARK 400 PROPROTEINASE E. REMARK 400 ALSO KNOWN AS THE ZINC CARBOXYPEPTIDASE FAMILY 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 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 SER A 135 71.95 -109.24 REMARK 500 SER A 199 -7.91 136.42 REMARK 500 GLN A 200 70.90 53.77 REMARK 500 ILE A 247 -81.23 -116.29 REMARK 500 LEU A 271 -168.63 -75.01 REMARK 500 LEU A 280 48.01 -100.64 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): 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 ZN A1309 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 69 ND1 REMARK 620 2 HIS A 196 ND1 101.9 REMARK 620 3 GLU A 72 OE1 119.0 95.7 REMARK 620 4 GLU A 72 OE2 89.0 149.4 54.6 REMARK 620 5 INF A1308 O2 114.4 96.4 121.0 105.0 REMARK 620 N 1 2 3 4 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A1309 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE INF A1308 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1HEE RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF BOVINE PANCREATIC CARBOXYPEPTIDASE A REMARK 900 COMPLEXED WITH L-N-HYDROXYAMINOCARBONYL PHENYLALANINE AT REMARK 900 2.3 A REMARK 900 RELATED ID: 1HDU RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF BOVINE PANCREATIC CARBOXYPEPTIDASE A REMARK 900 COMPLEXED WITH AMINOCARBONYLPHENYLALANINE AT 1.75 A REMARK 900 RELATED ID: 1ARL RELATED DB: PDB REMARK 900 CARBOXYPEPTIDASE A WITH ZN REMOVED REMARK 900 RELATED ID: 1ARM RELATED DB: PDB REMARK 900 CARBOXYPEPTIDASE A WITH ZN REPLACED BY HG REMARK 900 RELATED ID: 1BAV RELATED DB: PDB REMARK 900 CARBOXYPEPTIDASE A COMPLEXED WITH REMARK 900 2-BENZYL-3-IODO-PROPANOIC ACID (BIP) REMARK 900 RELATED ID: 1CPX RELATED DB: PDB REMARK 900 BETA FORM OF CARBOXYPEPTIDASE A (RESIDUES 3-307) FROM REMARK 900 BOVINE PANCREAS IN AN ORTHORHOMBIC CRYSTAL FORM WITH TWO REMARK 900 ZINC IONS IN THE ACTIVE SITE. REMARK 900 RELATED ID: 1F57 RELATED DB: PDB REMARK 900 CARBOXYPEPTIDASE A COMPLEX WITH D-CYSTEINE AT 1.75 A REMARK 900 RELATED ID: 1PYT RELATED DB: PDB REMARK 900 TERNARY COMPLEX OF PROCARBOXYPEPTIDASE A, PROPROTEINASE REMARK 900 E,AND CHYMOTRYPSINOGEN C REMARK 900 RELATED ID: 1YME RELATED DB: PDB REMARK 900 STRUCTURE OF CARBOXYPEPTIDASE DBREF 1HDQ A 1 307 UNP P00730 CBPA_BOVIN 111 417 SEQRES 1 A 307 ALA ARG SER THR ASN THR PHE ASN TYR ALA THR TYR HIS SEQRES 2 A 307 THR LEU ASP GLU ILE TYR ASP PHE MET ASP LEU LEU VAL SEQRES 3 A 307 ALA GLU HIS PRO GLN LEU VAL SER LYS LEU GLN ILE GLY SEQRES 4 A 307 ARG SER TYR GLU GLY ARG PRO ILE TYR VAL LEU LYS PHE SEQRES 5 A 307 SER THR GLY GLY SER ASN ARG PRO ALA ILE TRP ILE ASP SEQRES 6 A 307 LEU GLY ILE HIS SER ARG GLU TRP ILE THR GLN ALA THR SEQRES 7 A 307 GLY VAL TRP PHE ALA LYS LYS PHE THR GLU ASP TYR GLY SEQRES 8 A 307 GLN ASP PRO SER PHE THR ALA ILE LEU ASP SER MET ASP SEQRES 9 A 307 ILE PHE LEU GLU ILE VAL THR ASN PRO ASP GLY PHE ALA SEQRES 10 A 307 PHE THR HIS SER GLN ASN ARG LEU TRP ARG LYS THR ARG SEQRES 11 A 307 SER VAL THR SER SER SER LEU CYS VAL GLY VAL ASP ALA SEQRES 12 A 307 ASN ARG ASN TRP ASP ALA GLY PHE GLY LYS ALA GLY ALA SEQRES 13 A 307 SER SER SER PRO CYS SER GLU THR TYR HIS GLY LYS TYR SEQRES 14 A 307 ALA ASN SER GLU VAL GLU VAL LYS SER ILE VAL ASP PHE SEQRES 15 A 307 VAL LYS ASP HIS GLY ASN PHE LYS ALA PHE LEU SER ILE SEQRES 16 A 307 HIS SER TYR SER GLN LEU LEU LEU TYR PRO TYR GLY TYR SEQRES 17 A 307 THR THR GLN SER ILE PRO ASP LYS THR GLU LEU ASN GLN SEQRES 18 A 307 VAL ALA LYS SER ALA VAL GLU ALA LEU LYS SER LEU TYR SEQRES 19 A 307 GLY THR SER TYR LYS TYR GLY SER ILE ILE THR THR ILE SEQRES 20 A 307 TYR GLN ALA SER GLY GLY SER ILE ASP TRP SER TYR ASN SEQRES 21 A 307 GLN GLY ILE LYS TYR SER PHE THR PHE GLU LEU ARG ASP SEQRES 22 A 307 THR GLY ARG TYR GLY PHE LEU LEU PRO ALA SER GLN ILE SEQRES 23 A 307 ILE PRO THR ALA GLN GLU THR TRP LEU GLY VAL LEU THR SEQRES 24 A 307 ILE MET GLU HIS THR LEU ASN ASN HET ZN A1309 1 HET INF A1308 16 HETNAM ZN ZINC ION HETNAM INF D-[(N-HYDROXYAMINO)CARBONYL]PHENYLALANINE FORMUL 2 ZN ZN 2+ FORMUL 3 INF C10 H12 N2 O4 FORMUL 4 HOH *211(H2 O1) HELIX 1 1 THR A 14 HIS A 29 1 16 HELIX 2 2 GLU A 72 TYR A 90 1 19 HELIX 3 3 ASP A 93 MET A 103 1 11 HELIX 4 4 ASN A 112 GLN A 122 1 11 HELIX 5 5 ASP A 142 ASN A 146 5 5 HELIX 6 6 GLU A 173 GLY A 187 1 15 HELIX 7 7 ASP A 215 SER A 232 1 18 HELIX 8 8 ILE A 243 ILE A 247 1 5 HELIX 9 9 GLY A 253 GLN A 261 1 9 HELIX 10 10 TYR A 277 LEU A 281 5 5 HELIX 11 11 PRO A 282 SER A 284 5 3 HELIX 12 12 GLN A 285 ASN A 307 1 23 SHEET 1 AA 8 VAL A 33 ARG A 40 0 SHEET 2 AA 8 PRO A 46 PHE A 52 -1 O ILE A 47 N ILE A 38 SHEET 3 AA 8 ASP A 104 GLU A 108 -1 O ILE A 105 N PHE A 52 SHEET 4 AA 8 ALA A 61 LEU A 66 1 O ILE A 62 N PHE A 106 SHEET 5 AA 8 PHE A 189 HIS A 196 SHEET 6 AA 8 TYR A 265 GLU A 270 SHEET 7 AA 8 LEU A 201 TYR A 204 -1 O LEU A 201 N GLU A 270 SHEET 8 AA 8 LYS A 239 SER A 242 1 O LYS A 239 N LEU A 202 SSBOND 1 CYS A 138 CYS A 161 1555 1555 2.02 LINK ZN ZN A1309 ND1 HIS A 69 1555 1555 2.18 LINK ZN ZN A1309 ND1 HIS A 196 1555 1555 2.27 LINK ZN ZN A1309 OE1 GLU A 72 1555 1555 2.40 LINK ZN ZN A1309 OE2 GLU A 72 1555 1555 2.37 LINK ZN ZN A1309 O2 INF A1308 1555 1555 2.17 CISPEP 1 SER A 197 TYR A 198 0 0.03 CISPEP 2 PRO A 205 TYR A 206 0 0.13 CISPEP 3 ARG A 272 ASP A 273 0 -0.38 SITE 1 AC1 4 HIS A 69 GLU A 72 HIS A 196 INF A1308 SITE 1 AC2 13 HIS A 69 GLU A 72 ARG A 127 ARG A 145 SITE 2 AC2 13 HIS A 196 SER A 197 ILE A 247 TYR A 248 SITE 3 AC2 13 GLU A 270 ZN A1309 HOH A2209 HOH A2210 SITE 4 AC2 13 HOH A2211 CRYST1 51.961 60.465 47.792 90.00 97.59 90.00 P 1 21 1 2 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 0.019245 0.000000 0.002565 0.00000 SCALE2 0.000000 0.016538 0.000000 0.00000 SCALE3 0.000000 0.000000 0.021109 0.00000