HEADER ZINC ENDOPEPTIDASE 09-MAY-94 1IAE TITLE CRYSTAL STRUCTURES, SPECTROSCOPIC FEATURES, AND CATALYTIC TITLE 2 PROPERTIES OF COBALT(II), COPPER(II), NICKEL(II), AND TITLE 3 MERCURY(II) DERIVATIVES OF THE ZINC ENDOPEPTIDASE ASTACIN. TITLE 4 A CORRELATION OF STRUCTURE AND PROTEOLYTIC ACTIVITY COMPND MOL_ID: 1; COMPND 2 MOLECULE: ASTACIN; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.24.21; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ASTACUS ASTACUS; SOURCE 3 ORGANISM_COMMON: BROAD-FINGERED CRAYFISH; SOURCE 4 ORGANISM_TAXID: 6715 KEYWDS ZINC ENDOPEPTIDASE EXPDTA X-RAY DIFFRACTION AUTHOR F.GRAMS,W.STOECKER,W.BODE REVDAT 3 24-FEB-09 1IAE 1 VERSN REVDAT 2 01-APR-03 1IAE 1 JRNL REVDAT 1 31-AUG-94 1IAE 0 JRNL AUTH F.X.GOMIS-RUTH,F.GRAMS,I.YIALLOUROS,H.NAR, JRNL AUTH 2 U.KUSTHARDT,R.ZWILLING,W.BODE,W.STOCKER JRNL TITL CRYSTAL STRUCTURES, SPECTROSCOPIC FEATURES, AND JRNL TITL 2 CATALYTIC PROPERTIES OF COBALT(II), COPPER(II), JRNL TITL 3 NICKEL(II), AND MERCURY(II) DERIVATIVES OF THE JRNL TITL 4 ZINC ENDOPEPTIDASE ASTACIN. A CORRELATION OF JRNL TITL 5 STRUCTURE AND PROTEOLYTIC ACTIVITY. JRNL REF J.BIOL.CHEM. V. 269 17111 1994 JRNL REFN ISSN 0021-9258 JRNL PMID 8006015 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.BODE,F.-X.GOMIS-RUETH,W.STOECKER REMARK 1 TITL ASTACINS, SERRALYSINS, SNAKE VENOM AND MATRIX REMARK 1 TITL 2 METALLOPROTEINASES EXHIBIT IDENTICAL ZINC-BINDING REMARK 1 TITL 3 ENVIRONMENTS (HEXXHXXGXXH AND MET-TURN) AND REMARK 1 TITL 4 TOPOLOGIES AND SHOULD BE GROUPED INTO A COMMON REMARK 1 TITL 5 FAMILY, THE 'METZINCINS' REMARK 1 REF FEBS LETT. V. 331 134 1993 REMARK 1 REFN ISSN 0014-5793 REMARK 1 REFERENCE 2 REMARK 1 AUTH W.BODE,F.X.GOMIS-RUETH,R.HUBER,R.ZWILLING, REMARK 1 AUTH 2 W.STOECKER REMARK 1 TITL STRUCTURE OF ASTACIN AND IMPLICATIONS FOR REMARK 1 TITL 2 ACTIVATION OF ASTACINS AND ZINC-LIGATION OF REMARK 1 TITL 3 COLLAGENASES REMARK 1 REF NATURE V. 358 164 1992 REMARK 1 REFN ISSN 0028-0836 REMARK 2 REMARK 2 RESOLUTION. 1.83 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) : 1.83 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL 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) : 0.143 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 : 1591 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 184 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) : 0.009 REMARK 3 BOND ANGLES (DEGREES) : 2.28 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 1IAE 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 : 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 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 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 (%): 48.93 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.41 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 32.85000 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 65.70000 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 65.70000 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 32.85000 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 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 ASN A 169 CB CG OD1 ND2 REMARK 480 LEU A 200 OXT 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 THR A 49 -73.38 -120.36 REMARK 500 SER A 72 145.16 75.85 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 8 0.08 SIDE_CHAIN 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 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 305 DISTANCE = 8.25 ANGSTROMS REMARK 525 HOH A 389 DISTANCE = 5.99 ANGSTROMS REMARK 525 HOH A 420 DISTANCE = 5.32 ANGSTROMS REMARK 525 HOH A 422 DISTANCE = 6.57 ANGSTROMS REMARK 525 HOH A 428 DISTANCE = 6.56 ANGSTROMS REMARK 525 HOH A 432 DISTANCE = 5.55 ANGSTROMS REMARK 525 HOH A 447 DISTANCE = 6.75 ANGSTROMS REMARK 525 HOH A 452 DISTANCE = 6.64 ANGSTROMS 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 NI A 999 NI REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 96 NE2 REMARK 620 2 HIS A 102 NE2 89.7 REMARK 620 3 HOH A 600 O 91.0 88.3 REMARK 620 4 HOH A 300 O 94.4 155.3 67.2 REMARK 620 5 HIS A 92 NE2 94.5 104.0 166.5 100.0 REMARK 620 6 TYR A 149 OH 175.3 87.9 84.9 86.1 90.1 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI A 999 DBREF 1IAE A 1 200 UNP P07584 ASTA_ASTFL 50 249 SEQRES 1 A 200 ALA ALA ILE LEU GLY ASP GLU TYR LEU TRP SER GLY GLY SEQRES 2 A 200 VAL ILE PRO TYR THR PHE ALA GLY VAL SER GLY ALA ASP SEQRES 3 A 200 GLN SER ALA ILE LEU SER GLY MET GLN GLU LEU GLU GLU SEQRES 4 A 200 LYS THR CYS ILE ARG PHE VAL PRO ARG THR THR GLU SER SEQRES 5 A 200 ASP TYR VAL GLU ILE PHE THR SER GLY SER GLY CYS TRP SEQRES 6 A 200 SER TYR VAL GLY ARG ILE SER GLY ALA GLN GLN VAL SER SEQRES 7 A 200 LEU GLN ALA ASN GLY CYS VAL TYR HIS GLY THR ILE ILE SEQRES 8 A 200 HIS GLU LEU MET HIS ALA ILE GLY PHE TYR HIS GLU HIS SEQRES 9 A 200 THR ARG MET ASP ARG ASP ASN TYR VAL THR ILE ASN TYR SEQRES 10 A 200 GLN ASN VAL ASP PRO SER MET THR SER ASN PHE ASP ILE SEQRES 11 A 200 ASP THR TYR SER ARG TYR VAL GLY GLU ASP TYR GLN TYR SEQRES 12 A 200 TYR SER ILE MET HIS TYR GLY LYS TYR SER PHE SER ILE SEQRES 13 A 200 GLN TRP GLY VAL LEU GLU THR ILE VAL PRO LEU GLN ASN SEQRES 14 A 200 GLY ILE ASP LEU THR ASP PRO TYR ASP LYS ALA HIS MET SEQRES 15 A 200 LEU GLN THR ASP ALA ASN GLN ILE ASN ASN LEU TYR THR SEQRES 16 A 200 ASN GLU CYS SER LEU HET NI A 999 1 HETNAM NI NICKEL (II) ION FORMUL 2 NI NI 2+ FORMUL 3 HOH *184(H2 O) HELIX 1 1 GLY A 5 LEU A 9 5 5 HELIX 2 2 TRP A 10 GLY A 12 5 3 HELIX 3 3 SER A 23 THR A 41 1 19 HELIX 4 4 TYR A 86 GLY A 99 1 14 HELIX 5 5 HIS A 102 ARG A 106 5 5 HELIX 6 6 ASP A 108 ASN A 111 5 4 HELIX 7 7 TYR A 117 ASN A 119 5 3 HELIX 8 8 MET A 124 ASP A 129 5 6 HELIX 9 9 ASP A 175 LYS A 179 5 5 HELIX 10 10 LEU A 183 TYR A 194 1 12 HELIX 11 11 TYR A 194 SER A 199 1 6 SHEET 1 A 2 ALA A 2 ILE A 3 0 SHEET 2 A 2 SER A 134 ARG A 135 -1 O ARG A 135 N ALA A 2 SHEET 1 B 5 ARG A 44 PRO A 47 0 SHEET 2 B 5 VAL A 14 ALA A 20 1 N ILE A 15 O ARG A 44 SHEET 3 B 5 TYR A 54 PHE A 58 1 N VAL A 55 O PRO A 16 SHEET 4 B 5 ALA A 74 LEU A 79 1 O GLN A 75 N GLU A 56 SHEET 5 B 5 CYS A 64 SER A 66 -1 N TRP A 65 O SER A 78 SHEET 1 C 2 VAL A 113 ILE A 115 0 SHEET 2 C 2 ILE A 164 PRO A 166 -1 N VAL A 165 O THR A 114 SSBOND 1 CYS A 42 CYS A 198 1555 1555 2.02 SSBOND 2 CYS A 64 CYS A 84 1555 1555 2.03 LINK NI NI A 999 NE2 HIS A 96 1555 1555 2.18 LINK NI NI A 999 NE2 HIS A 102 1555 1555 2.09 LINK NI NI A 999 O HOH A 600 1555 1555 2.22 LINK NI NI A 999 O HOH A 300 1555 1555 2.30 LINK NI NI A 999 NE2 HIS A 92 1555 1555 2.07 LINK NI NI A 999 OH TYR A 149 1555 1555 2.27 SITE 1 AC1 6 HIS A 92 HIS A 96 HIS A 102 TYR A 149 SITE 2 AC1 6 HOH A 300 HOH A 600 CRYST1 61.890 61.890 98.550 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 0.016158 0.009329 0.000000 0.00000 SCALE2 0.000000 0.018657 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010147 0.00000