HEADER SUPERANTIGEN 14-NOV-96 1SXT TITLE STAPHYLOCOCCAL ENTEROTOXIN TYPE A (SEA) CO-CRYSTALLISED TITLE 2 WITH ZINC COMPND MOL_ID: 1; COMPND 2 MOLECULE: STAPHYLOCOCCAL ENTEROTOXIN TYPE A; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: SEA; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STAPHYLOCOCCUS AUREUS; SOURCE 3 ORGANISM_TAXID: 1280; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS SUPERANTIGEN, STAPHYLOCOCCUS, ENTEROTOXIN, TOXIN EXPDTA X-RAY DIFFRACTION AUTHOR S.M.SUNDSTROM REVDAT 2 24-FEB-09 1SXT 1 VERSN REVDAT 1 19-NOV-97 1SXT 0 JRNL AUTH M.SUNDSTROM,D.HALLEN,A.SVENSSON,E.SCHAD,M.DOHLSTEN, JRNL AUTH 2 L.ABRAHMSEN JRNL TITL THE CO-CRYSTAL STRUCTURE OF STAPHYLOCOCCAL JRNL TITL 2 ENTEROTOXIN TYPE A WITH ZN2+ AT 2.7 A RESOLUTION. JRNL TITL 3 IMPLICATIONS FOR MAJOR HISTOCOMPATIBILITY COMPLEX JRNL TITL 4 CLASS II BINDING. JRNL REF J.BIOL.CHEM. V. 271 32212 1996 JRNL REFN ISSN 0021-9258 JRNL PMID 8943278 JRNL DOI 10.1074/JBC.271.50.32212 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 2.70 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) : 2.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 18.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 90.2 REMARK 3 NUMBER OF REFLECTIONS : 15899 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) : 0.206 REMARK 3 FREE R VALUE : 0.317 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 795 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 : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.70 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.80 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 82.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2270 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 : 3640 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 92 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) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.65 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 : PARHCSDX.PRO REMARK 3 PARAMETER FILE 2 : NULL REMARK 3 PARAMETER FILE 3 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1SXT 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 : JUN-95 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 6.25 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL 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 : NI 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 : 15899 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.700 REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 91.8 REMARK 200 DATA REDUNDANCY : 2.200 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.05600 REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.80 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) : 0.22700 REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT 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 (%): 70.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.66 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: THE PROTEIN WAS PRE-INCUBATED WITH REMARK 280 0.1 MM ZNSO4. CRYSTALS WAS GROWN USING THE HANGING DROP METHOD REMARK 280 FROM 15% PEG 6000, 0.3 M NH4SO4 AND 0.1 M MES BUFFER AT PH REMARK 280 6.25, VAPOR DIFFUSION - HANGING DROP 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 58.43667 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 116.87333 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 116.87333 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 58.43667 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B 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 SER A 1 REMARK 465 GLU A 2 REMARK 465 LYS A 3 REMARK 465 SER A 4 REMARK 465 GLU A 5 REMARK 465 GLU A 6 REMARK 465 ILE A 7 REMARK 465 ASN A 8 REMARK 465 GLU A 9 REMARK 465 SER B 1 REMARK 465 GLU B 2 REMARK 465 LYS B 3 REMARK 465 SER B 4 REMARK 465 GLU B 5 REMARK 465 GLU B 6 REMARK 465 ILE B 7 REMARK 465 ASN B 8 REMARK 465 GLU B 9 REMARK 465 GLY B 98 REMARK 465 GLY B 99 REMARK 465 THR B 100 REMARK 465 PRO B 101 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 GLN A 19 CD OE1 NE2 REMARK 470 SER A 189 OG REMARK 470 GLU A 191 CG CD OE1 OE2 REMARK 470 THR A 218 OG1 CG2 REMARK 470 ASP B 60 CG OD1 OD2 REMARK 470 HIS B 61 CG ND1 CD2 CE1 NE2 REMARK 470 THR B 218 OG1 CG2 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 OD1 ASP A 75 OH TYR B 32 3564 1.33 REMARK 500 CG ARG A 118 CD GLN B 49 4456 1.79 REMARK 500 CB LEU A 119 O PHE B 47 4456 1.81 REMARK 500 OG SER A 221 CZ PHE B 47 4456 1.96 REMARK 500 O ARG A 118 N GLN B 49 4456 1.97 REMARK 500 CG ARG A 118 OE1 GLN B 49 4456 2.01 REMARK 500 CB LYS A 148 CD2 LEU B 48 4456 2.03 REMARK 500 CG ARG A 118 CG GLN B 49 4456 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 11 38.36 -89.16 REMARK 500 GLU A 17 -32.63 135.13 REMARK 500 TYR A 31 -60.09 -130.29 REMARK 500 THR A 38 132.62 -170.84 REMARK 500 LEU A 48 88.92 44.43 REMARK 500 GLN A 49 -31.38 53.09 REMARK 500 HIS A 50 32.55 -157.04 REMARK 500 ASP A 60 -150.79 -88.92 REMARK 500 TRP A 63 -56.36 -29.78 REMARK 500 TYR A 88 114.52 -164.52 REMARK 500 ALA A 97 88.29 -64.81 REMARK 500 PRO A 101 -116.68 -4.03 REMARK 500 ASN A 102 44.64 -93.34 REMARK 500 ASN A 116 -4.13 60.37 REMARK 500 TYR A 170 35.93 -94.51 REMARK 500 PHE A 175 42.83 -107.40 REMARK 500 SER A 189 7.73 -63.75 REMARK 500 THR A 190 -83.91 -139.51 REMARK 500 THR A 232 30.99 -98.00 REMARK 500 ASP B 11 24.03 -65.76 REMARK 500 LYS B 37 117.47 -162.94 REMARK 500 ASN B 40 -26.45 62.72 REMARK 500 HIS B 44 20.46 -145.55 REMARK 500 GLN B 46 -90.61 -87.59 REMARK 500 PHE B 47 -63.98 86.26 REMARK 500 GLN B 49 -85.70 2.41 REMARK 500 ASP B 60 -136.84 162.03 REMARK 500 GLN B 95 33.57 73.62 REMARK 500 LYS B 103 -44.69 -148.33 REMARK 500 MET B 107 132.07 178.40 REMARK 500 TYR B 170 46.88 -96.53 REMARK 500 PHE B 175 33.40 -98.63 REMARK 500 ASP B 176 36.19 70.12 REMARK 500 HIS B 187 76.82 -58.73 REMARK 500 ASN B 223 72.12 42.52 REMARK 500 REMARK 500 REMARK: NULL 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 B 401 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 61 CE1 REMARK 620 2 HIS B 187 ND1 154.2 REMARK 620 3 HIS B 225 NE2 87.3 113.9 REMARK 620 4 ASP B 227 OD2 85.5 94.1 123.1 REMARK 620 5 HIS A 61 NE2 30.2 126.0 117.3 71.8 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 501 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 225 NE2 REMARK 620 2 ASP A 227 OD2 134.3 REMARK 620 3 HIS A 187 ND1 110.4 100.9 REMARK 620 N 1 2 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 401 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 501 DBREF 1SXT A 1 233 UNP P0A0L2 ETXA_STAAU 25 257 DBREF 1SXT B 1 233 UNP P0A0L2 ETXA_STAAU 25 257 SEQRES 1 A 233 SER GLU LYS SER GLU GLU ILE ASN GLU LYS ASP LEU ARG SEQRES 2 A 233 LYS LYS SER GLU LEU GLN GLY THR ALA LEU GLY ASN LEU SEQRES 3 A 233 LYS GLN ILE TYR TYR TYR ASN GLU LYS ALA LYS THR GLU SEQRES 4 A 233 ASN LYS GLU SER HIS ASP GLN PHE LEU GLN HIS THR ILE SEQRES 5 A 233 LEU PHE LYS GLY PHE PHE THR ASP HIS SER TRP TYR ASN SEQRES 6 A 233 ASP LEU LEU VAL ASP PHE ASP SER LYS ASP ILE VAL ASP SEQRES 7 A 233 LYS TYR LYS GLY LYS LYS VAL ASP LEU TYR GLY ALA TYR SEQRES 8 A 233 TYR GLY TYR GLN CYS ALA GLY GLY THR PRO ASN LYS THR SEQRES 9 A 233 ALA CYS MET TYR GLY GLY VAL THR LEU HIS ASP ASN ASN SEQRES 10 A 233 ARG LEU THR GLU GLU LYS LYS VAL PRO ILE ASN LEU TRP SEQRES 11 A 233 LEU ASP GLY LYS GLN ASN THR VAL PRO LEU GLU THR VAL SEQRES 12 A 233 LYS THR ASN LYS LYS ASN VAL THR VAL GLN GLU LEU ASP SEQRES 13 A 233 LEU GLN ALA ARG ARG TYR LEU GLN GLU LYS TYR ASN LEU SEQRES 14 A 233 TYR ASN SER ASP VAL PHE ASP GLY LYS VAL GLN ARG GLY SEQRES 15 A 233 LEU ILE VAL PHE HIS THR SER THR GLU PRO SER VAL ASN SEQRES 16 A 233 TYR ASP LEU PHE GLY ALA GLN GLY GLN TYR SER ASN THR SEQRES 17 A 233 LEU LEU ARG ILE TYR ARG ASP ASN LYS THR ILE ASN SER SEQRES 18 A 233 GLU ASN MET HIS ILE ASP ILE TYR LEU TYR THR SER SEQRES 1 B 233 SER GLU LYS SER GLU GLU ILE ASN GLU LYS ASP LEU ARG SEQRES 2 B 233 LYS LYS SER GLU LEU GLN GLY THR ALA LEU GLY ASN LEU SEQRES 3 B 233 LYS GLN ILE TYR TYR TYR ASN GLU LYS ALA LYS THR GLU SEQRES 4 B 233 ASN LYS GLU SER HIS ASP GLN PHE LEU GLN HIS THR ILE SEQRES 5 B 233 LEU PHE LYS GLY PHE PHE THR ASP HIS SER TRP TYR ASN SEQRES 6 B 233 ASP LEU LEU VAL ASP PHE ASP SER LYS ASP ILE VAL ASP SEQRES 7 B 233 LYS TYR LYS GLY LYS LYS VAL ASP LEU TYR GLY ALA TYR SEQRES 8 B 233 TYR GLY TYR GLN CYS ALA GLY GLY THR PRO ASN LYS THR SEQRES 9 B 233 ALA CYS MET TYR GLY GLY VAL THR LEU HIS ASP ASN ASN SEQRES 10 B 233 ARG LEU THR GLU GLU LYS LYS VAL PRO ILE ASN LEU TRP SEQRES 11 B 233 LEU ASP GLY LYS GLN ASN THR VAL PRO LEU GLU THR VAL SEQRES 12 B 233 LYS THR ASN LYS LYS ASN VAL THR VAL GLN GLU LEU ASP SEQRES 13 B 233 LEU GLN ALA ARG ARG TYR LEU GLN GLU LYS TYR ASN LEU SEQRES 14 B 233 TYR ASN SER ASP VAL PHE ASP GLY LYS VAL GLN ARG GLY SEQRES 15 B 233 LEU ILE VAL PHE HIS THR SER THR GLU PRO SER VAL ASN SEQRES 16 B 233 TYR ASP LEU PHE GLY ALA GLN GLY GLN TYR SER ASN THR SEQRES 17 B 233 LEU LEU ARG ILE TYR ARG ASP ASN LYS THR ILE ASN SER SEQRES 18 B 233 GLU ASN MET HIS ILE ASP ILE TYR LEU TYR THR SER HET ZN B 401 1 HET ZN A 501 1 HETNAM ZN ZINC ION FORMUL 3 ZN 2(ZN 2+) HELIX 1 1 ALA A 22 TYR A 30 1 9 HELIX 2 2 LYS A 74 TYR A 80 1 7 HELIX 3 3 PRO A 101 LYS A 103 5 3 HELIX 4 4 VAL A 152 GLU A 165 1 14 HELIX 5 5 ASP A 173 PHE A 175 5 3 HELIX 6 6 SER A 206 ASP A 215 1 10 HELIX 7 7 LYS B 15 GLU B 17 5 3 HELIX 8 8 GLY B 20 TYR B 31 5 12 HELIX 9 9 LYS B 74 LYS B 79 1 6 HELIX 10 10 LEU B 140 THR B 142 5 3 HELIX 11 11 VAL B 152 TYR B 167 1 16 HELIX 12 12 ASP B 173 PHE B 175 5 3 HELIX 13 13 SER B 206 TYR B 213 1 8 SHEET 1 A 3 LYS A 35 THR A 38 0 SHEET 2 A 3 VAL A 85 ALA A 90 -1 N GLY A 89 O ALA A 36 SHEET 3 A 3 VAL A 111 LEU A 113 -1 N THR A 112 O ASP A 86 SHEET 1 B 3 THR A 51 PHE A 54 0 SHEET 2 B 3 ASP A 66 ASP A 70 -1 N VAL A 69 O ILE A 52 SHEET 3 B 3 THR A 104 TYR A 108 1 N ALA A 105 O ASP A 66 SHEET 1 C 5 LYS A 134 THR A 137 0 SHEET 2 C 5 PRO A 126 LEU A 131 -1 N LEU A 131 O LYS A 134 SHEET 3 C 5 HIS A 225 TYR A 231 1 N ILE A 226 O PRO A 126 SHEET 4 C 5 ARG A 181 HIS A 187 -1 N HIS A 187 O HIS A 225 SHEET 5 C 5 VAL A 194 ASP A 197 -1 N TYR A 196 O ILE A 184 SHEET 1 D 2 ASN A 149 THR A 151 0 SHEET 2 D 2 THR A 218 ASN A 220 -1 N ILE A 219 O VAL A 150 SHEET 1 E 3 LYS B 35 THR B 38 0 SHEET 2 E 3 VAL B 85 ALA B 90 -1 N GLY B 89 O ALA B 36 SHEET 3 E 3 VAL B 111 LEU B 113 -1 N THR B 112 O ASP B 86 SHEET 1 F 3 THR B 51 LYS B 55 0 SHEET 2 F 3 ASP B 66 ASP B 70 -1 N VAL B 69 O ILE B 52 SHEET 3 F 3 THR B 104 TYR B 108 1 N ALA B 105 O ASP B 66 SHEET 1 G 5 LYS B 134 THR B 137 0 SHEET 2 G 5 ILE B 127 LEU B 131 -1 N LEU B 131 O LYS B 134 SHEET 3 G 5 HIS B 225 TYR B 231 1 N ILE B 226 O ASN B 128 SHEET 4 G 5 ARG B 181 HIS B 187 -1 N HIS B 187 O HIS B 225 SHEET 5 G 5 VAL B 194 ASP B 197 -1 N TYR B 196 O ILE B 184 SHEET 1 H 2 ASN B 149 THR B 151 0 SHEET 2 H 2 THR B 218 ASN B 220 -1 N ILE B 219 O VAL B 150 SSBOND 1 CYS A 96 CYS A 106 1555 1555 2.22 SSBOND 2 CYS B 96 CYS B 106 1555 1555 2.33 LINK ZN ZN B 401 CE1 HIS A 61 1555 1555 2.29 LINK ZN ZN B 401 ND1 HIS B 187 1555 1555 2.11 LINK ZN ZN B 401 NE2 HIS B 225 1555 1555 2.16 LINK ZN ZN B 401 OD2 ASP B 227 1555 1555 2.35 LINK ZN ZN A 501 NE2 HIS A 225 1555 1555 2.32 LINK ZN ZN A 501 OD2 ASP A 227 1555 1555 2.17 LINK ZN ZN A 501 ND1 HIS A 187 1555 1555 2.41 LINK ZN ZN B 401 NE2 HIS A 61 1555 1555 2.63 SITE 1 AC1 4 HIS A 61 HIS B 187 HIS B 225 ASP B 227 SITE 1 AC2 3 HIS A 187 HIS A 225 ASP A 227 CRYST1 75.590 75.590 175.310 90.00 90.00 120.00 P 31 2 1 12 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 0.013229 0.007638 0.000000 0.00000 SCALE2 0.000000 0.015276 0.000000 0.00000 SCALE3 0.000000 0.000000 0.005704 0.00000