PDB Short entry for 1T2T HEADER HYDROLASE/DNA 22-APR-04 1T2T TITLE CRYSTAL STRUCTURE OF THE DNA-BINDING DOMAIN OF INTRON ENDONUCLEASE I- TITLE 2 TEVI WITH OPERATOR SITE COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-D(*TP*TP*TP*GP*TP*AP*GP*GP*AP*CP*TP*GP*CP*CP*CP*TP*TP*TP COMPND 3 *AP*AP*T)-3'; COMPND 4 CHAIN: B; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: 5'-D(*AP*AP*TP*TP*AP*AP*AP*GP*GP*GP*CP*AP*GP*TP*CP*CP*TP*AP COMPND 8 *CP*AP*A)-3'; COMPND 9 CHAIN: C; COMPND 10 ENGINEERED: YES; COMPND 11 MOL_ID: 3; COMPND 12 MOLECULE: INTRON-ASSOCIATED ENDONUCLEASE 1; COMPND 13 CHAIN: A; COMPND 14 FRAGMENT: DNA-BINDING DOMAIN (RESIDUES 130-245); COMPND 15 SYNONYM: I-TEVI, IRF PROTEIN; COMPND 16 EC: 3.1.-.-; COMPND 17 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 ORGANISM_SCIENTIFIC: ENTEROBACTERIA PHAGE T4; SOURCE 7 ORGANISM_TAXID: 10665; SOURCE 8 GENE: ITEVIR; SOURCE 9 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 10 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS PROTEIN-DNA COMPLEX, HYDROLASE-DNA COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR D.R.EDGELL,V.DERBYSHIRE,P.VAN ROEY,S.LABONNE,M.J.STANGER,Z.LI, AUTHOR 2 T.M.BOYD,D.A.SHUB,M.BELFORT REVDAT 4 23-AUG-23 1T2T 1 REMARK REVDAT 3 24-FEB-09 1T2T 1 VERSN REVDAT 2 19-OCT-04 1T2T 1 JRNL REVDAT 1 07-SEP-04 1T2T 0 JRNL AUTH D.R.EDGELL,V.DERBYSHIRE,P.VAN ROEY,S.LABONNE,M.J.STANGER, JRNL AUTH 2 Z.LI,T.M.BOYD,D.A.SHUB,M.BELFORT JRNL TITL INTRON-ENCODED HOMING ENDONUCLEASE I-TEVI ALSO FUNCTIONS AS JRNL TITL 2 A TRANSCRIPTIONAL AUTOREPRESSOR. JRNL REF NAT.STRUCT.MOL.BIOL. V. 11 936 2004 JRNL REFN ISSN 1545-9993 JRNL PMID 15361856 JRNL DOI 10.1038/NSMB823 REMARK 2 REMARK 2 RESOLUTION. 2.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 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) : 2.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.81 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 225915.210 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 89.6 REMARK 3 NUMBER OF REFLECTIONS : 9349 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) : 0.238 REMARK 3 FREE R VALUE : 0.274 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.200 REMARK 3 FREE R VALUE TEST SET COUNT : 956 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.009 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) : 2.50 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.66 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 78.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1197 REMARK 3 BIN R VALUE (WORKING SET) : 0.3590 REMARK 3 BIN FREE R VALUE : 0.3960 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 10.70 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 143 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.033 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 769 REMARK 3 NUCLEIC ACID ATOMS : 855 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 72 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 35.30 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 36.90 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -8.36000 REMARK 3 B22 (A**2) : 11.30000 REMARK 3 B33 (A**2) : -2.94000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -12.90000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.36 REMARK 3 ESD FROM SIGMAA (A) : 0.47 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) : 0.42 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.50 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.008 REMARK 3 BOND ANGLES (DEGREES) : 1.600 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 23.90 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.830 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) : 1.010 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.680 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.410 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.120 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.33 REMARK 3 BSOL : 32.41 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_REP.PARAM REMARK 3 PARAMETER FILE 2 : DNA-RNA_REP.PARAM REMARK 3 PARAMETER FILE 3 : ION.PARAM REMARK 3 PARAMETER FILE 4 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : DNA-RNA_REP.TOP REMARK 3 TOPOLOGY FILE 3 : WATER_REP.TOP REMARK 3 TOPOLOGY FILE 4 : ION.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1T2T COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 23-APR-04. REMARK 100 THE DEPOSITION ID IS D_1000022240. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-JUL-02 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X12C REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.000 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : BRANDEIS - B4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 10240 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.500 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.2 REMARK 200 DATA REDUNDANCY : 3.100 REMARK 200 R MERGE (I) : 0.08200 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) : 2.50 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.59 REMARK 200 COMPLETENESS FOR SHELL (%) : 98.6 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 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB ENTRY 1I3J 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): 2.91 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MES, GLYCEROL, SODIUM FORMATE, SODIUM REMARK 280 CHLORIDE, PEG 3350, ISOPROPANOL, PH 6.5, VAPOR DIFFUSION, REMARK 280 HANGING DROP, TEMPERATURE 283K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y+1/2,-Z 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 32.44500 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 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: TRIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, C, 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 LYS A 130 REMARK 465 ALA A 131 REMARK 465 LEU A 132 REMARK 465 TYR A 133 REMARK 465 SER A 134 REMARK 465 LYS A 135 REMARK 465 PRO A 136 REMARK 465 GLY A 137 REMARK 465 SER A 138 REMARK 465 LYS A 139 REMARK 465 ASN A 140 REMARK 465 GLY A 141 REMARK 465 ARG A 142 REMARK 465 TRP A 143 REMARK 465 ASN A 144 REMARK 465 PRO A 145 REMARK 465 GLU A 146 REMARK 465 THR A 147 REMARK 465 HIS A 148 REMARK 465 ALA A 245 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 DT B 2 N1 - C1' - C2' ANGL. DEV. = 9.5 DEGREES REMARK 500 DT B 3 O4' - C1' - N1 ANGL. DEV. = 1.8 DEGREES REMARK 500 DT B 5 N1 - C1' - C2' ANGL. DEV. = 9.2 DEGREES REMARK 500 DA B 6 N9 - C1' - C2' ANGL. DEV. = 8.6 DEGREES REMARK 500 DG B 7 N9 - C1' - C2' ANGL. DEV. = 9.4 DEGREES REMARK 500 DC B 13 O4' - C1' - N1 ANGL. DEV. = 2.5 DEGREES REMARK 500 DC B 14 O4' - C1' - N1 ANGL. DEV. = 2.6 DEGREES REMARK 500 DG C 39 O4' - C1' - N9 ANGL. DEV. = 1.9 DEGREES 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 ASN A 201 36.12 -95.41 REMARK 500 ASN A 239 58.46 -99.67 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 DG B 8 0.05 SIDE CHAIN REMARK 500 DT B 16 0.07 SIDE CHAIN REMARK 500 DG C 38 0.06 SIDE CHAIN REMARK 500 DG C 39 0.07 SIDE CHAIN REMARK 500 DG C 40 0.06 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 ZN A 100 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 151 SG REMARK 620 2 CYS A 153 SG 104.3 REMARK 620 3 CYS A 164 SG 118.1 113.8 REMARK 620 4 CYS A 167 SG 111.6 110.3 98.9 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 100 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1I3J RELATED DB: PDB REMARK 900 THE SAME PROTEIN COMPLEXED WITH I-TEVI HOMING SITE DBREF 1T2T A 130 245 UNP P13299 TEV1_BPT4 130 245 DBREF 1T2T B 1 21 PDB 1T2T 1T2T 1 21 DBREF 1T2T C 31 51 PDB 1T2T 1T2T 31 51 SEQRES 1 B 21 DT DT DT DG DT DA DG DG DA DC DT DG DC SEQRES 2 B 21 DC DC DT DT DT DA DA DT SEQRES 1 C 21 DA DA DT DT DA DA DA DG DG DG DC DA DG SEQRES 2 C 21 DT DC DC DT DA DC DA DA SEQRES 1 A 116 LYS ALA LEU TYR SER LYS PRO GLY SER LYS ASN GLY ARG SEQRES 2 A 116 TRP ASN PRO GLU THR HIS LYS PHE CYS LYS CYS GLY VAL SEQRES 3 A 116 ARG ILE GLN THR SER ALA TYR THR CYS SER LYS CYS ARG SEQRES 4 A 116 ASN ARG SER GLY GLU ASN ASN SER PHE PHE ASN HIS LYS SEQRES 5 A 116 HIS SER ASP ILE THR LYS SER LYS ILE SER GLU LYS MET SEQRES 6 A 116 LYS GLY LYS LYS PRO SER ASN ILE LYS LYS ILE SER CYS SEQRES 7 A 116 ASP GLY VAL ILE PHE ASP CYS ALA ALA ASP ALA ALA ARG SEQRES 8 A 116 HIS PHE LYS ILE SER SER GLY LEU VAL THR TYR ARG VAL SEQRES 9 A 116 LYS SER ASP LYS TRP ASN TRP PHE TYR ILE ASN ALA HET ZN A 100 1 HETNAM ZN ZINC ION FORMUL 4 ZN ZN 2+ FORMUL 5 HOH *72(H2 O) HELIX 1 1 SER A 171 ASN A 175 5 5 HELIX 2 2 SER A 183 LYS A 195 1 13 HELIX 3 3 CYS A 214 LYS A 223 1 10 HELIX 4 4 SER A 225 SER A 235 1 11 SHEET 1 A 3 VAL A 210 PHE A 212 0 SHEET 2 A 3 ILE A 205 CYS A 207 -1 N CYS A 207 O VAL A 210 SHEET 3 A 3 TRP A 240 TYR A 242 -1 O PHE A 241 N SER A 206 LINK ZN ZN A 100 SG CYS A 151 1555 1555 2.47 LINK ZN ZN A 100 SG CYS A 153 1555 1555 2.48 LINK ZN ZN A 100 SG CYS A 164 1555 1555 2.43 LINK ZN ZN A 100 SG CYS A 167 1555 1555 2.13 SITE 1 AC1 4 CYS A 151 CYS A 153 CYS A 164 CYS A 167 CRYST1 54.660 64.890 42.810 90.00 90.48 90.00 P 1 21 1 2 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 0.018295 0.000000 0.000153 0.00000 SCALE2 0.000000 0.015411 0.000000 0.00000 SCALE3 0.000000 0.000000 0.023360 0.00000