1BSW - Header Asymmetric Unit

HEADER METAL BINDING PROTEIN 31-AUG-98 1BSW

TITLE ACUTOLYSIN A FROM SNAKE VENOM OF AGKISTRODON ACUTUS AT PH TITLE 2 7.5

COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (ACUTOLYSIN A); COMPND 3 CHAIN: A; COMPND 4 SYNONYM: HEMORRHAGIN, IAAH-I

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: DEINAGKISTRODON ACUTUS; SOURCE 3 ORGANISM_COMMON: CHINESE MOCCASIN; SOURCE 4 ORGANISM_TAXID: 36307; SOURCE 5 SECRETION: VENOM

KEYWDS METALLOPROTEINASE, SNAKE VENOM, MMP, METAL BINDING PROTEIN

EXPDTA X-RAY DIFFRACTION

AUTHOR W.GONG,X.ZHU,S.LIU,M.TENG,L.NIU

REVDAT 2 24-FEB-09 1BSW 1 VERSN REVDAT 1 26-AUG-99 1BSW 0

JRNL AUTH W.GONG,X.ZHU,S.LIU,M.TENG,L.NIU JRNL TITL CRYSTAL STRUCTURES OF ACUTOLYSIN A, A JRNL TITL 2 THREE-DISULFIDE HEMORRHAGIC ZINC METALLOPROTEINASE JRNL TITL 3 FROM THE SNAKE VENOM OF AGKISTRODON ACUTUS. JRNL REF J.MOL.BIOL. V. 283 657 1998 JRNL REFN ISSN 0022-2836 JRNL PMID 9784374 JRNL DOI 10.1006/JMBI.1998.2110

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.GONG,X.ZHU,L.NIU,M.TENG REMARK 1 TITL CRYSTALLIZATION AND PRELIMINARY X-RAY DIFFRACTION REMARK 1 TITL 2 STUDIES OF HAEHORRHAGIN I FROM THE SNAKE VENOM OF REMARK 1 TITL 3 AGKISTRODON ACUTUS REMARK 1 REF ACTA CRYSTALLOGR.,SECT.D V. 52 201 1996 REMARK 1 REFN ISSN 0907-4449

REMARK 2 REMARK 2 RESOLUTION. 1.95 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) : 1.95 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 88.3 REMARK 3 NUMBER OF REFLECTIONS : 12809 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) : 0.171 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 : 1527 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 4 REMARK 3 SOLVENT ATOMS : 139 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 17.85 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) : 0.013 REMARK 3 BOND ANGLES (DEGREES) : 1.60 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 1BSW COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-JUL-99. REMARK 100 THE RCSB ID CODE IS RCSB007105.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : SEALED TUBE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : CONVENTIONAL CU REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE CRYSTAL REMARK 200 OPTICS : NULL 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 : 12809 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.950 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 88.3 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.08300 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) : 1.95 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.10 REMARK 200 COMPLETENESS FOR SHELL (%) : 76.6 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.28300 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 1IAG REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.48 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.18 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.5

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -Y+1/2,X+1/2,Z+3/4 REMARK 290 4555 Y+1/2,-X+1/2,Z+1/4 REMARK 290 5555 -X+1/2,Y+1/2,-Z+3/4 REMARK 290 6555 X+1/2,-Y+1/2,-Z+1/4 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-Z+1/2 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 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 47.67500 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 31.58500 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 31.58500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 71.51250 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 31.58500 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 31.58500 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 23.83750 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 31.58500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 31.58500 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 71.51250 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 31.58500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 31.58500 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 23.83750 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 47.67500 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 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 HOH A 349 O HOH A 349 8555 2.07 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 ASP A 85 -69.72 -126.35 REMARK 500 ALA A 106 0.58 -69.82 REMARK 500 CYS A 117 -14.72 83.52 REMARK 500 CYS A 159 51.75 -141.01 REMARK 500 LYS A 176 31.04 -70.75 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 ARG A 121 0.14 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 406 DISTANCE = 7.06 ANGSTROMS REMARK 525 HOH A 433 DISTANCE = 5.24 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 ZN A 800 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 443 O REMARK 620 2 HIS A 142 NE2 97.8 REMARK 620 3 HIS A 146 NE2 113.5 95.3 REMARK 620 4 HIS A 152 NE2 135.1 105.7 101.9 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 900 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 444 O REMARK 620 2 HOH A 319 O 147.2 REMARK 620 3 CYS A 197 O 96.9 92.9 REMARK 620 4 ASP A 93 OD1 136.0 76.5 81.0 REMARK 620 5 ASP A 93 OD2 79.9 131.8 88.7 56.2 REMARK 620 6 ASN A 200 OD1 75.9 75.4 78.9 144.3 151.0 REMARK 620 7 GLU A 9 OE1 83.2 84.2 174.5 102.8 96.7 95.8 REMARK 620 N 1 2 3 4 5 6

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 900

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1BUD RELATED DB: PDB

DBREF 1BSW A 4 200 UNP Q9PW35 ACLA_AGKAC 191 388

SEQRES 1 A 197 PHE GLN ARG TYR MET GLU ILE VAL ILE VAL VAL ASP HIS SEQRES 2 A 197 SER MET VAL LYS LYS TYR ASN GLY ASP SER ASP SER ILE SEQRES 3 A 197 LYS ALA TRP VAL TYR GLU MET ILE ASN THR ILE THR GLU SEQRES 4 A 197 SER TYR SER TYR LEU LYS ILE ASP ILE SER LEU SER GLY SEQRES 5 A 197 LEU GLU ILE TRP SER GLY LYS ASP LEU ILE ASP VAL GLU SEQRES 6 A 197 ALA SER ALA GLY ASN THR LEU LYS SER PHE GLY GLU TRP SEQRES 7 A 197 ARG ALA LYS ASP LEU ILE HIS ARG ILE SER HIS ASP ASN SEQRES 8 A 197 ALA GLN LEU LEU THR ALA THR ASP PHE ASP GLY ALA THR SEQRES 9 A 197 ILE GLY LEU ALA TYR VAL ALA SER MET CYS ASN PRO LYS SEQRES 10 A 197 ARG SER VAL GLY VAL ILE GLN ASP HIS SER SER VAL ASN SEQRES 11 A 197 ARG LEU VAL ALA ILE THR LEU ALA HIS GLU MET ALA HIS SEQRES 12 A 197 ASN LEU GLY VAL SER HIS ASP GLU GLY SER CYS SER CYS SEQRES 13 A 197 GLY GLY LYS SER CYS ILE MET SER PRO SER ILE SER ASP SEQRES 14 A 197 GLU THR ILE LYS TYR PHE SER ASP CYS SER TYR ILE GLN SEQRES 15 A 197 CYS ARG ASP TYR ILE ALA LYS GLU ASN PRO PRO CYS ILE SEQRES 16 A 197 LEU ASN

HET ZN A 800 1 HET CA A 900 1

HETNAM ZN ZINC ION HETNAM CA CALCIUM ION

FORMUL 2 ZN ZN 2+ FORMUL 3 CA CA 2+ FORMUL 4 HOH *141(H2 O)

HELIX 1 1 HIS A 16 LYS A 21 1 6 HELIX 2 2 SER A 26 LEU A 47 1 22 HELIX 3 3 ALA A 71 LYS A 84 1 14 HELIX 4 4 LEU A 86 HIS A 88 5 3 HELIX 5 5 ASN A 133 ASN A 147 1 15 HELIX 6 6 ASP A 180 GLU A 193 1 14 HELIX 7 7 PRO A 196 ILE A 198 5 3

SHEET 1 A 5 GLY A 109 ALA A 111 0 SHEET 2 A 5 VAL A 123 GLN A 127 -1 N VAL A 125 O LEU A 110 SHEET 3 A 5 ASN A 94 THR A 99 1 N ALA A 95 O GLY A 124 SHEET 4 A 5 ARG A 6 VAL A 14 1 N VAL A 11 O ASN A 94 SHEET 5 A 5 ILE A 49 ILE A 58 1 N ASP A 50 O ARG A 6

SSBOND 1 CYS A 117 CYS A 197 1555 1555 1.95 SSBOND 2 CYS A 157 CYS A 181 1555 1555 2.01 SSBOND 3 CYS A 159 CYS A 164 1555 1555 2.19

LINK ZN ZN A 800 O HOH A 443 1555 1555 2.24 LINK CA CA A 900 O HOH A 444 1555 1555 2.11 LINK CA CA A 900 O HOH A 319 1555 1555 2.69 LINK ZN ZN A 800 NE2 HIS A 142 1555 1555 1.99 LINK ZN ZN A 800 NE2 HIS A 146 1555 1555 2.00 LINK ZN ZN A 800 NE2 HIS A 152 1555 1555 1.99 LINK CA CA A 900 O CYS A 197 1555 1555 2.24 LINK CA CA A 900 OD1 ASP A 93 1555 1555 2.23 LINK CA CA A 900 OD2 ASP A 93 1555 1555 2.28 LINK CA CA A 900 OD1 ASN A 200 1555 1555 2.39 LINK CA CA A 900 OE1 GLU A 9 1555 1555 2.18

SITE 1 AC1 4 HIS A 142 HIS A 146 HIS A 152 HOH A 443 SITE 1 AC2 6 GLU A 9 ASP A 93 CYS A 197 ASN A 200 SITE 2 AC2 6 HOH A 319 HOH A 444

CRYST1 63.170 63.170 95.350 90.00 90.00 90.00 P 43 21 2 8

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 0.015830 0.000000 0.000000 0.00000

SCALE2 0.000000 0.015830 0.000000 0.00000

SCALE3 0.000000 0.000000 0.010488 0.00000