HEADER ENTEROTOXIN 21-AUG-95 1STE TITLE STAPHYLOCOCCAL ENTEROTOXIN C2 FROM STAPHYLOCOCCUS AUREUS COMPND MOL_ID: 1; COMPND 2 MOLECULE: STAPHYLOCOCCAL ENTEROTOXIN C2; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: SEC2 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STAPHYLOCOCCUS AUREUS; SOURCE 3 ORGANISM_TAXID: 1280 KEYWDS SUPERANTIGEN, TOXIN, ENTEROTOXIN EXPDTA X-RAY DIFFRACTION AUTHOR K.R.ACHARYA,A.C.PAPAGEORGIOU REVDAT 3 30-OCT-24 1STE 1 REMARK LINK REVDAT 2 24-FEB-09 1STE 1 VERSN REVDAT 1 23-DEC-96 1STE 0 JRNL AUTH A.C.PAPAGEORGIOU,K.R.ACHARYA,R.SHAPIRO,E.F.PASSALACQUA, JRNL AUTH 2 R.D.BREHM,H.S.TRANTER JRNL TITL CRYSTAL STRUCTURE OF THE SUPERANTIGEN ENTEROTOXIN C2 FROM JRNL TITL 2 STAPHYLOCOCCUS AUREUS REVEALS A ZINC-BINDING SITE. JRNL REF STRUCTURE V. 3 769 1995 JRNL REFN ISSN 0969-2126 JRNL PMID 7582894 JRNL DOI 10.1016/S0969-2126(01)00212-X REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH H.TRANTER,R.D.BREHM,K.R.ACHARYA REMARK 1 TITL MOLECULAR TOPOLOGY IS IMPORTANT FOR THE FUNCTION OF REMARK 1 TITL 2 STAPHYLOCOCCAL SUPERANTIGENS REMARK 1 EDIT J.THIBODEAU, R.-P.SEKALY REMARK 1 REF BACTERIAL SUPERANTIGENS: 5 1995 REMARK 1 REF 2 STRUCTURE, FUNCTION AND REMARK 1 REF 3 THERAPEUTIC POTENTIAL REMARK 1 PUBL AUSTIN : R.G.LANDES REMARK 1 REFN REMARK 1 REFERENCE 2 REMARK 1 AUTH K.R.ACHARYA,E.F.PASSALACQUA,E.Y.JONES,K.HARLOS,D.I.STUART, REMARK 1 AUTH 2 R.D.BREHM,H.S.TRANTER REMARK 1 TITL STRUCTURAL BASIS OF SUPERANTIGEN ACTION INFERRED FROM REMARK 1 TITL 2 CRYSTAL STRUCTURE OF TOXIC-SHOCK SYNDROME TOXIN-1 REMARK 1 REF NATURE V. 367 94 1994 REMARK 1 REFN ISSN 0028-0836 REMARK 1 REFERENCE 3 REMARK 1 AUTH E.F.PASSALACQUA,R.D.BREHM,K.R.ACHARYA,H.S.TRANTER REMARK 1 TITL CRYSTALLIZATION AND PRELIMINARY X-RAY ANALYSIS OF A REMARK 1 TITL 2 MICROBIAL SUPERANTIGEN STAPHYLOCOCCAL ENTEROTOXIN C2 REMARK 1 REF J.MOL.BIOL. V. 233 170 1993 REMARK 1 REFN ISSN 0022-2836 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 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)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 97.9 REMARK 3 NUMBER OF REFLECTIONS : 18932 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) : 0.205 REMARK 3 FREE R VALUE : 0.255 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 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 : 1902 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 70 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 19.90 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) : 0.25 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) : 0.008 REMARK 3 BOND ANGLES (DEGREES) : 1.460 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 25.98 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.288 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 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; 1.500 REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; 2.000 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 1STE COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000176505. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 18-DEC-94 REMARK 200 TEMPERATURE (KELVIN) : 289 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SRS REMARK 200 BEAMLINE : PX9.5 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.88 REMARK 200 MONOCHROMATOR : NULL 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 : 19302 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 40.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.6 REMARK 200 DATA REDUNDANCY : 6.500 REMARK 200 R MERGE (I) : 0.05000 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 3.1 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 50.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.43 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.5 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 145.00000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 21.52500 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 21.52500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 217.50000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 21.52500 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 21.52500 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 72.50000 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 21.52500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 21.52500 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 217.50000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 21.52500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 21.52500 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 72.50000 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 145.00000 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 GLY A 239 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 GLU A 1 CG CD OE1 OE2 REMARK 470 SER A 96 OG REMARK 470 SER A 97 OG REMARK 470 LYS A 98 CG CD CE NZ REMARK 470 ASP A 99 CG OD1 OD2 REMARK 470 ASN A 100 CG OD1 ND2 REMARK 470 VAL A 101 CG1 CG2 REMARK 470 LYS A 103 CG CD CE NZ REMARK 470 VAL A 104 CG1 CG2 REMARK 470 THR A 105 OG1 CG2 REMARK 470 LYS A 237 CG CD CE NZ REMARK 470 ASN A 238 O CG OD1 ND2 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 PHE A 44 -73.45 -114.08 REMARK 500 LEU A 58 -26.22 75.09 REMARK 500 PHE A 95 133.67 174.19 REMARK 500 VAL A 101 -61.11 -15.02 REMARK 500 LYS A 108 -64.86 -90.18 REMARK 500 ASN A 125 18.59 59.30 REMARK 500 SER A 178 -151.95 -150.79 REMARK 500 LYS A 237 -79.74 153.21 REMARK 500 REMARK 500 REMARK: NULL REMARK 600 REMARK 600 HETEROGEN REMARK 600 REMARK 600 ZINC ION IS TETRAHEDRALLY COORDINATED TO HIS 118, HIS 120 REMARK 600 ASP 83 AND ASP 9 FROM A SYMMETRY RELATED MOLECULE. 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 500 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 9 OD2 REMARK 620 2 ASP A 83 OD2 97.8 REMARK 620 3 HIS A 118 ND1 115.1 122.8 REMARK 620 4 HIS A 122 NE2 95.6 92.4 126.5 REMARK 620 N 1 2 3 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 500 DBREF 1STE A 1 239 UNP P34071 ENTC2_STAAU 28 266 SEQRES 1 A 239 GLU SER GLN PRO ASP PRO THR PRO ASP GLU LEU HIS LYS SEQRES 2 A 239 SER SER GLU PHE THR GLY THR MET GLY ASN MET LYS TYR SEQRES 3 A 239 LEU TYR ASP ASP HIS TYR VAL SER ALA THR LYS VAL MET SEQRES 4 A 239 SER VAL ASP LYS PHE LEU ALA HIS ASP LEU ILE TYR ASN SEQRES 5 A 239 ILE SER ASP LYS LYS LEU LYS ASN TYR ASP LYS VAL LYS SEQRES 6 A 239 THR GLU LEU LEU ASN GLU ASP LEU ALA LYS LYS TYR LYS SEQRES 7 A 239 ASP GLU VAL VAL ASP VAL TYR GLY SER ASN TYR TYR VAL SEQRES 8 A 239 ASN CYS TYR PHE SER SER LYS ASP ASN VAL GLY LYS VAL SEQRES 9 A 239 THR GLY GLY LYS THR CYS MET TYR GLY GLY ILE THR LYS SEQRES 10 A 239 HIS GLU GLY ASN HIS PHE ASP ASN GLY ASN LEU GLN ASN SEQRES 11 A 239 VAL LEU ILE ARG VAL TYR GLU ASN LYS ARG ASN THR ILE SEQRES 12 A 239 SER PHE GLU VAL GLN THR ASP LYS LYS SER VAL THR ALA SEQRES 13 A 239 GLN GLU LEU ASP ILE LYS ALA ARG ASN PHE LEU ILE ASN SEQRES 14 A 239 LYS LYS ASN LEU TYR GLU PHE ASN SER SER PRO TYR GLU SEQRES 15 A 239 THR GLY TYR ILE LYS PHE ILE GLU ASN ASN GLY ASN THR SEQRES 16 A 239 PHE TRP TYR ASP MET MET PRO ALA PRO GLY ASP LYS PHE SEQRES 17 A 239 ASP GLN SER LYS TYR LEU MET MET TYR ASN ASP ASN LYS SEQRES 18 A 239 THR VAL ASP SER LYS SER VAL LYS ILE GLU VAL HIS LEU SEQRES 19 A 239 THR THR LYS ASN GLY HET ZN A 500 1 HETNAM ZN ZINC ION FORMUL 2 ZN ZN 2+ FORMUL 3 HOH *70(H2 O) HELIX 1 A1 THR A 7 LEU A 11 1 5 HELIX 2 A2 LYS A 13 THR A 18 1 6 HELIX 3 A3 MET A 21 ASP A 29 1 9 HELIX 4 A4 ASN A 70 LYS A 78 1 9 HELIX 5 A5 ALA A 156 ASN A 172 1 17 HELIX 6 A6 PHE A 123 ASN A 127 5 5 SHEET 1 A 3 VAL A 33 ALA A 35 0 SHEET 2 A 3 VAL A 82 GLY A 86 -1 N GLY A 86 O VAL A 33 SHEET 3 A 3 ILE A 115 LYS A 117 -1 N THR A 116 O ASP A 83 SHEET 1 B 3 ASP A 48 ASN A 52 0 SHEET 2 B 3 LYS A 63 GLU A 67 -1 N THR A 66 O LEU A 49 SHEET 3 B 3 THR A 109 TYR A 112 1 N THR A 109 O LYS A 65 SHEET 1 C 5 ARG A 140 THR A 149 0 SHEET 2 C 5 GLN A 129 GLU A 137 -1 N GLU A 137 O ARG A 140 SHEET 3 C 5 LYS A 229 THR A 236 1 N ILE A 230 O ARG A 134 SHEET 4 C 5 TYR A 181 ILE A 189 -1 N ILE A 189 O LYS A 229 SHEET 5 C 5 THR A 195 ASP A 199 -1 N TYR A 198 O ILE A 186 SHEET 1 D 2 SER A 153 THR A 155 0 SHEET 2 D 2 THR A 222 ASP A 224 -1 N VAL A 223 O VAL A 154 SSBOND 1 CYS A 93 CYS A 110 1555 1555 2.03 LINK OD2 ASP A 9 ZN ZN A 500 1545 1555 1.97 LINK OD2 ASP A 83 ZN ZN A 500 1555 1555 1.93 LINK ND1 HIS A 118 ZN ZN A 500 1555 1555 2.23 LINK NE2 HIS A 122 ZN ZN A 500 1555 1555 2.21 SITE 1 AC1 4 ASP A 9 ASP A 83 HIS A 118 HIS A 122 CRYST1 43.050 43.050 290.000 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 0.023229 0.000000 0.000000 0.00000 SCALE2 0.000000 0.023229 0.000000 0.00000 SCALE3 0.000000 0.000000 0.003448 0.00000