1CPX - Header Asymmetric Unit

HEADER HYDROLASE 27-JUL-98 1CPX

TITLE BETA FORM OF CARBOXYPEPTIDASE A (RESIDUES 3-307) FROM TITLE 2 BOVINE PANCREAS IN AN ORTHORHOMBIC CRYSTAL FORM WITH TWO TITLE 3 ZINC IONS IN THE ACTIVE SITE.

COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (CARBOXYPEPTIDASE A); COMPND 3 CHAIN: A; COMPND 4 SYNONYM: CPA, BETA FORM; COMPND 5 EC: 3.4.17.1; COMPND 6 OTHER_DETAILS: TRUNCATED FORM OF CPA (RESIDUES 3-307 I.E. COMPND 7 THE BETA FORM) INDUCED BY TRACES OF TRYPSIN

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: PANCREAS; SOURCE 6 OTHER_DETAILS: SIGMA #C0261; COX ET AL. (1964) SOURCE 7 BIOCHEMISTRY 3, 44-47

KEYWDS METALLOPROTEASE, HYDROLASE, CARBOXYPEPTIDASE, ZINC KEYWDS 2 INHIBITION, INDUCED FIT

EXPDTA X-RAY DIFFRACTION

AUTHOR J.T.BUKRINSKY,M.J.BJERRUM,A.KADZIOLA

REVDAT 3 24-FEB-09 1CPX 1 VERSN REVDAT 2 29-DEC-99 1CPX 4 HEADER COMPND REMARK JRNL REVDAT 2 2 4 ATOM SOURCE SEQRES REVDAT 1 05-AUG-98 1CPX 0

JRNL AUTH J.T.BUKRINSKY,M.J.BJERRUM,A.KADZIOLA JRNL TITL NATIVE CARBOXYPEPTIDASE A IN A NEW CRYSTAL JRNL TITL 2 ENVIRONMENT REVEALS A DIFFERENT CONFORMATION OF JRNL TITL 3 THE IMPORTANT TYROSINE 248. JRNL REF BIOCHEMISTRY V. 37 16555 1998 JRNL REFN ISSN 0006-2960 JRNL PMID 9843422 JRNL DOI 10.1021/BI981678I

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.851 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 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)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 93.4 REMARK 3 NUMBER OF REFLECTIONS : 20060 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) : 0.167 REMARK 3 FREE R VALUE : 0.226 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 977 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 : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.09 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 73.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1878 REMARK 3 BIN R VALUE (WORKING SET) : 0.2240 REMARK 3 BIN FREE R VALUE : 0.2520 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 83 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 : 2421 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 277 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 19.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 15.80 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) : 0.20 REMARK 3 ESD FROM SIGMAA (A) : 0.18 REMARK 3 LOW RESOLUTION CUTOFF (A) : 4.08 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.25 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.18 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 2.00 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.40 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.24 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) : 2.221 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.277 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.876 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.800 ; 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 : PAR-CIS.PEP REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : TOPH11.WAT REMARK 3 TOPOLOGY FILE 3 : TOPH19.PEP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1CPX COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-AUG-99. REMARK 100 THE RCSB ID CODE IS RCSB008248.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 06-DEC-96 REMARK 200 TEMPERATURE (KELVIN) : 290 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.54 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS II REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 20453 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 40.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.1 REMARK 200 DATA REDUNDANCY : 4.300 REMARK 200 R MERGE (I) : 0.03800 REMARK 200 R SYM (I) : 0.03800 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 30.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.03 REMARK 200 COMPLETENESS FOR SHELL (%) : 67.7 REMARK 200 DATA REDUNDANCY IN SHELL : 3.90 REMARK 200 R MERGE FOR SHELL (I) : 0.15700 REMARK 200 R SYM FOR SHELL (I) : 0.15700 REMARK 200 <I/SIGMA(I)> FOR SHELL : 7.100 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: 5CPA WITHOUT WATERS AND ZN REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.25 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: CPA FROM SIGMA #C0261 WAS DISSOLVED REMARK 280 IN 1.0 M LICL WITH 20 MM TRIS-HCL PH 7.5 TO GIVE 12 MG/ML AND REMARK 280 USED WITHOUT FURTHER PURIFICATION. THIS PROTEIN SOLUTION WAS REMARK 280 PLACED IN 50 MICROL DIALYSIS BUTTONS FROM HAMPTON RESEARCH AND REMARK 280 DIALYZED AGAINST A 2 ML RESERVOIR OF THE ABOVE MENTIONED REMARK 280 BUFFER WHILE LOWERING THE EXTERNAL LICL CONCENTRATION BY 25% REMARK 280 EVERY OTHER DAY. THE CRYSTALS APPEARED A~0.24 M LICL AND WAS REMARK 280 STORED AT 0.30M LICL. IF THIS PROCEDURE DOES NOT WORK BY REMARK 280 ITSELF AND YOU END UP WITH THE MONOCLINIC ALPHA-FORM (1-307), REMARK 280 YOU CAN TRY TO AD TRACES OF TRYPSIN (~10 MICROG/ML) TO THE REMARK 280 PROTEIN SOLUTION TO PROVOKE FORMATION OF THE BETA-FORM (3-307) REMARK 280 , MICRO DIALYSIS

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 24.39500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 48.01000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 33.42500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 48.01000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 24.39500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 33.42500 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 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 ALA A 1 REMARK 465 ARG A 2

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 32 -34.61 -135.67 REMARK 500 SER A 199 -22.46 150.49 REMARK 500 GLN A 200 67.06 65.01 REMARK 500 ILE A 247 -73.13 -119.43 REMARK 500 ASP A 273 -139.37 -114.58 REMARK 500 LEU A 280 43.14 -91.79 REMARK 500 ASN A 306 83.51 80.94 REMARK 500 REMARK 500 REMARK: NULL

REMARK 600 REMARK 600 HETEROGEN REMARK 600 ZN 308 IS THE CATALYTIC ZINC AND REMARK 600 ZN 309 IS THE INHIBITORY ZINC REMARK 600 REMARK 600 OH 541 IS THE HYDROXIDE ION, WHICH BRIDGES THE CATALYTIC REMARK 600 ZINC (ZN 308) AND THE INHIBITORY ZINC (ZN309)

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 A 308 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 69 ND1 REMARK 620 2 GLU A 72 OE1 119.5 REMARK 620 3 HIS A 196 ND1 99.7 101.4 REMARK 620 4 OH A 541 O 124.6 107.9 97.3 REMARK 620 5 GLU A 72 OE2 87.7 55.5 155.7 97.3 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 309 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 270 OE2 REMARK 620 2 OH A 541 O 118.8 REMARK 620 N 1

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CZN REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: CATALYTIC ZN 308 WITH LIGANDS: HIS 69, GLU REMARK 800 72, HIS 196 AND OH 541 REMARK 800 SITE_IDENTIFIER: IZN REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: INHIBITORY ZN 309 WITH LIGANDS: GLU 270 AND REMARK 800 OH 541 REMARK 800 SITE_IDENTIFIER: PCI REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR PARTLY COMPETITIVE ANIONS REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 308 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 309 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE OH A 541

REMARK 999 REMARK 999 SEQUENCE REMARK 999 SER 3 - ASN 307, I.E. THE BETA FORM OF CPA

DBREF 1CPX A 1 307 UNP P00730 CBPA1_BOVIN 111 417

SEQADV 1CPX ALA A 228 UNP P00730 GLU 338 CONFLICT SEQADV 1CPX VAL A 305 UNP P00730 LEU 415 CONFLICT

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 ALA 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 VAL ASN ASN

HET ZN A 308 1 HET ZN A 309 1 HET OH A 541 1

HETNAM ZN ZINC ION HETNAM OH HYDROXIDE ION

FORMUL 2 ZN 2(ZN 2+) FORMUL 4 OH H O 1- FORMUL 5 HOH *277(H2 O)

HELIX 1 1 LEU A 15 GLU A 28 1 14 HELIX 2 2 TRP A 73 ASP A 89 1 17 HELIX 3 3 PRO A 94 LEU A 100 1 7 HELIX 4 4 PRO A 113 SER A 121 1 9 HELIX 5 5 ALA A 143 ARG A 145 5 3 HELIX 6 6 VAL A 174 HIS A 186 1 13 HELIX 7 7 LYS A 216 TYR A 234 1 19 HELIX 8 8 ILE A 243 THR A 246 1 4 HELIX 9 9 SER A 254 GLN A 261 1 8 HELIX 10 10 ALA A 283 THR A 304 5 22

SHEET 1 A 8 LYS A 239 SER A 242 0 SHEET 2 A 8 LEU A 201 TYR A 204 1 N LEU A 202 O LYS A 239 SHEET 3 A 8 TYR A 265 GLU A 270 -1 N GLU A 270 O LEU A 201 SHEET 4 A 8 PHE A 189 HIS A 196 1 N PHE A 192 O TYR A 265 SHEET 5 A 8 PRO A 60 LEU A 66 1 N ALA A 61 O LYS A 190 SHEET 6 A 8 MET A 103 GLU A 108 1 N ASP A 104 O PRO A 60 SHEET 7 A 8 PRO A 46 PHE A 52 -1 N PHE A 52 O ILE A 105 SHEET 8 A 8 VAL A 33 ARG A 40 -1 N GLY A 39 O ILE A 47

SSBOND 1 CYS A 138 CYS A 161 1555 1555 2.01

LINK ND1 HIS A 69 ZN ZN A 308 1555 1555 1.98 LINK OE1 GLU A 72 ZN ZN A 308 1555 1555 2.24 LINK ND1 HIS A 196 ZN ZN A 308 1555 1555 2.08 LINK OE2 GLU A 270 ZN ZN A 309 1555 1555 1.84 LINK ZN ZN A 308 O OH A 541 1555 1555 1.75 LINK ZN ZN A 309 O OH A 541 1555 1555 1.85 LINK ZN ZN A 308 OE2 GLU A 72 1555 1555 2.45

CISPEP 1 SER A 197 TYR A 198 0 0.60 CISPEP 2 PRO A 205 TYR A 206 0 -0.39 CISPEP 3 ARG A 272 ASP A 273 0 -0.06

SITE 1 CZN 4 OH A 541 HIS A 69 GLU A 72 HIS A 196 SITE 1 IZN 3 ZN A 309 GLU A 270 OH A 541 SITE 1 PCI 4 HOH A 516 ASN A 144 ARG A 145 TYR A 248 SITE 1 AC1 5 HIS A 69 GLU A 72 HIS A 196 ZN A 309 SITE 2 AC1 5 OH A 541 SITE 1 AC2 3 GLU A 270 ZN A 308 OH A 541 SITE 1 AC3 7 HIS A 69 GLU A 72 HIS A 196 SER A 197 SITE 2 AC3 7 GLU A 270 ZN A 308 ZN A 309

CRYST1 48.790 66.850 96.020 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 0.020496 0.000000 0.000000 0.00000

SCALE2 0.000000 0.014959 0.000000 0.00000

SCALE3 0.000000 0.000000 0.010414 0.00000