HEADER HYDROLASE/DNA 25-AUG-99 1CW0 TITLE CRYSTAL STRUCTURE ANALYSIS OF VERY SHORT PATCH REPAIR (VSR) TITLE 2 ENDONUCLEASE IN COMPLEX WITH A DUPLEX DNA COMPND MOL_ID: 1; COMPND 2 MOLECULE: DNA (5'-D(*AP*CP*GP*TP*AP*CP*CP*TP*GP*GP*CP*T)-3'); COMPND 3 CHAIN: M; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: DNA (5'-D(*AP*GP*C)-3'); COMPND 7 CHAIN: N; COMPND 8 ENGINEERED: YES; COMPND 9 MOL_ID: 3; COMPND 10 MOLECULE: DNA (5'-D(P*TP*AP*GP*GP*TP*AP*CP*GP*T)-3'); COMPND 11 CHAIN: O; COMPND 12 ENGINEERED: YES; COMPND 13 MOL_ID: 4; COMPND 14 MOLECULE: PROTEIN (DNA MISMATCH ENDONUCLEASE); COMPND 15 CHAIN: A; COMPND 16 SYNONYM: VSR ENDONUCLEASE, PATCH REPAIR PROTEIN; COMPND 17 EC: 3.1.-.-; COMPND 18 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 MOL_ID: 2; SOURCE 4 SYNTHETIC: YES; SOURCE 5 MOL_ID: 3; SOURCE 6 SYNTHETIC: YES; SOURCE 7 MOL_ID: 4; SOURCE 8 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 9 ORGANISM_TAXID: 562; SOURCE 10 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 11 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS PROTEIN-DNA COMPLEX, MISMATCH, INTERCALATION, ZINC, HYDROLASE/DNA, KEYWDS 2 HYDROLASE-DNA COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR S.E.TSUTAKAWA,H.JINGAMI,K.MORIKAWA REVDAT 3 09-AUG-23 1CW0 1 REMARK LINK REVDAT 2 24-FEB-09 1CW0 1 VERSN REVDAT 1 12-DEC-99 1CW0 0 JRNL AUTH S.E.TSUTAKAWA,H.JINGAMI,K.MORIKAWA JRNL TITL RECOGNITION OF A TG MISMATCH: THE CRYSTAL STRUCTURE OF VERY JRNL TITL 2 SHORT PATCH REPAIR ENDONUCLEASE IN COMPLEX WITH A DNA JRNL TITL 3 DUPLEX. JRNL REF CELL(CAMBRIDGE,MASS.) V. 99 615 1999 JRNL REFN ISSN 0092-8674 JRNL PMID 10612397 JRNL DOI 10.1016/S0092-8674(00)81550-0 REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 22.00 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) (%) : 94.3 REMARK 3 NUMBER OF REFLECTIONS : 14332 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) : 0.204 REMARK 3 FREE R VALUE : 0.230 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 753 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.008 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) : 2.30 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.44 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 98.70 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2384 REMARK 3 BIN R VALUE (WORKING SET) : 0.2430 REMARK 3 BIN FREE R VALUE : 0.2800 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.60 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 116 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.026 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1260 REMARK 3 NUCLEIC ACID ATOMS : 488 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 206 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 28.50 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.80 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 2.87000 REMARK 3 B22 (A**2) : 2.87000 REMARK 3 B33 (A**2) : -5.74000 REMARK 3 B12 (A**2) : 5.97000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.26 REMARK 3 ESD FROM SIGMAA (A) : 0.23 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.30 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.23 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.100 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.860 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.180 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.850 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.820 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.640 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.32 REMARK 3 BSOL : 50.36 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 : PROTEIN-ALLHDG.PARAM REMARK 3 PARAMETER FILE 2 : DNA-RNA-ALLATOM.PARAM REMARK 3 PARAMETER FILE 3 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN-ALLHDG.TOP REMARK 3 TOPOLOGY FILE 2 : DNA-RNA-ALLATOM.TOP REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1CW0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 02-SEP-99. REMARK 100 THE DEPOSITION ID IS D_1000009577. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-JUN-99 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 5.60 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SPRING-8 REMARK 200 BEAMLINE : BL24XU REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.8340 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 15166 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 24.254 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 200 DATA REDUNDANCY : 4.600 REMARK 200 R MERGE (I) : 0.05900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 14.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.30 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.38 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 4.60 REMARK 200 R MERGE FOR SHELL (I) : 0.31600 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: TRUNCATED VSR MODEL, 1VSR REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 64.51 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.47 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 5.60, VAPOR DIFFUSION, HANGING DROP REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 65 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/6 REMARK 290 6555 X-Y,X,Z+5/6 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 101.66667 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 50.83333 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 76.25000 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 25.41667 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 127.08333 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: TETRAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: M, N, O, 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 LYS A 77 CB CG CD CE NZ REMARK 480 GLU A 106 CB CG CD OE1 OE2 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 ARG A 49 71.37 43.59 REMARK 500 ARG A 58 54.41 38.95 REMARK 500 HIS A 70 70.75 48.63 REMARK 500 ASP A 148 -162.53 -123.44 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 27 0.10 SIDE CHAIN REMARK 500 ARG A 49 0.28 SIDE CHAIN REMARK 500 ARG A 58 0.15 SIDE CHAIN REMARK 500 ARG A 82 0.12 SIDE CHAIN REMARK 500 ARG A 98 0.11 SIDE CHAIN REMARK 500 ARG A 103 0.12 SIDE CHAIN REMARK 500 ARG A 120 0.11 SIDE CHAIN 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 MG N 202 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DC N 353 O3' REMARK 620 2 DT O 354 OP3 77.0 REMARK 620 3 ASP A 51 OD1 154.7 85.4 REMARK 620 4 HOH A 496 O 85.8 86.5 75.0 REMARK 620 5 HOH A 498 O 95.0 170.6 100.5 87.9 REMARK 620 6 HOH A 596 O 100.6 87.3 96.5 169.9 99.2 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 203 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DT O 354 OP2 REMARK 620 2 DT O 354 OP3 65.8 REMARK 620 3 HOH O 495 O 92.6 98.0 REMARK 620 4 ASP A 51 OD2 170.3 104.5 90.0 REMARK 620 5 THR A 63 O 98.1 163.9 81.7 91.6 REMARK 620 6 HOH A 494 O 88.3 89.1 172.6 90.3 90.9 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 201 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 66 SG REMARK 620 2 HIS A 71 ND1 109.9 REMARK 620 3 CYS A 73 SG 114.9 107.1 REMARK 620 4 CYS A 117 SG 106.6 100.2 117.1 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 201 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG N 202 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 203 DBREF 1CW0 A 2 156 UNP P09184 VSR_ECOLI 1 155 DBREF 1CW0 M 301 312 PDB 1CW0 1CW0 301 312 DBREF 1CW0 N 351 353 PDB 1CW0 1CW0 351 353 DBREF 1CW0 O 354 362 PDB 1CW0 1CW0 354 362 SEQRES 1 M 12 DA DC DG DT DA DC DC DT DG DG DC DT SEQRES 1 N 3 DA DG DC SEQRES 1 O 9 DT DA DG DG DT DA DC DG DT SEQRES 1 A 155 ALA ASP VAL HIS ASP LYS ALA THR ARG SER LYS ASN MET SEQRES 2 A 155 ARG ALA ILE ALA THR ARG ASP THR ALA ILE GLU LYS ARG SEQRES 3 A 155 LEU ALA SER LEU LEU THR GLY GLN GLY LEU ALA PHE ARG SEQRES 4 A 155 VAL GLN ASP ALA SER LEU PRO GLY ARG PRO ASP PHE VAL SEQRES 5 A 155 VAL ASP GLU TYR ARG CYS VAL ILE PHE THR HIS GLY CYS SEQRES 6 A 155 PHE TRP HIS HIS HIS HIS CYS TYR LEU PHE LYS VAL PRO SEQRES 7 A 155 ALA THR ARG THR GLU PHE TRP LEU GLU LYS ILE GLY LYS SEQRES 8 A 155 ASN VAL GLU ARG ASP ARG ARG ASP ILE SER ARG LEU GLN SEQRES 9 A 155 GLU LEU GLY TRP ARG VAL LEU ILE VAL TRP GLU CYS ALA SEQRES 10 A 155 LEU ARG GLY ARG GLU LYS LEU THR ASP GLU ALA LEU THR SEQRES 11 A 155 GLU ARG LEU GLU GLU TRP ILE CYS GLY GLU GLY ALA SER SEQRES 12 A 155 ALA GLN ILE ASP THR GLN GLY ILE HIS LEU LEU ALA HET MG N 202 1 HET ZN A 201 1 HET MG A 203 1 HETNAM MG MAGNESIUM ION HETNAM ZN ZINC ION FORMUL 5 MG 2(MG 2+) FORMUL 6 ZN ZN 2+ FORMUL 8 HOH *206(H2 O) HELIX 1 1 ASP A 6 ILE A 17 1 12 HELIX 2 2 THR A 22 GLN A 35 1 14 HELIX 3 3 ASP A 55 TYR A 57 5 3 HELIX 4 4 ARG A 82 LEU A 107 1 26 HELIX 5 5 GLU A 116 ARG A 120 1 5 HELIX 6 6 THR A 126 GLY A 140 1 15 SHEET 1 A 6 ARG A 40 VAL A 41 0 SHEET 2 A 6 PHE A 52 VAL A 54 -1 O VAL A 53 N ARG A 40 SHEET 3 A 6 CYS A 59 HIS A 64 -1 O CYS A 59 N VAL A 54 SHEET 4 A 6 ARG A 110 TRP A 115 1 O ARG A 110 N VAL A 60 SHEET 5 A 6 ALA A 145 ASP A 148 1 O ALA A 145 N ILE A 113 SHEET 6 A 6 GLY A 151 LEU A 154 -1 O GLY A 151 N ASP A 148 LINK MG MG N 202 O3' DC N 353 1555 1555 2.27 LINK MG MG N 202 OP3 DT O 354 1555 1555 2.21 LINK MG MG N 202 OD1 ASP A 51 1555 1555 2.37 LINK MG MG N 202 O HOH A 496 1555 1555 2.33 LINK MG MG N 202 O HOH A 498 1555 1555 2.01 LINK MG MG N 202 O HOH A 596 1555 1555 1.93 LINK OP2 DT O 354 MG MG A 203 1555 1555 2.31 LINK OP3 DT O 354 MG MG A 203 1555 1555 2.29 LINK O HOH O 495 MG MG A 203 1555 1555 2.06 LINK OD2 ASP A 51 MG MG A 203 1555 1555 2.38 LINK O THR A 63 MG MG A 203 1555 1555 2.28 LINK SG CYS A 66 ZN ZN A 201 1555 1555 2.30 LINK ND1 HIS A 71 ZN ZN A 201 1555 1555 1.94 LINK SG CYS A 73 ZN ZN A 201 1555 1555 2.35 LINK SG CYS A 117 ZN ZN A 201 1555 1555 2.43 LINK MG MG A 203 O HOH A 494 1555 1555 2.06 SITE 1 AC1 4 CYS A 66 HIS A 71 CYS A 73 CYS A 117 SITE 1 AC2 7 ARG A 49 ASP A 51 HOH A 496 HOH A 498 SITE 2 AC2 7 HOH A 596 DC N 353 DT O 354 SITE 1 AC3 5 ASP A 51 THR A 63 HOH A 494 DT O 354 SITE 2 AC3 5 HOH O 495 CRYST1 63.000 63.000 152.500 90.00 90.00 120.00 P 65 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 0.015873 0.009164 0.000000 0.00000 SCALE2 0.000000 0.018329 0.000000 0.00000 SCALE3 0.000000 0.000000 0.006557 0.00000