HEADER HYDROLASE/DNA 13-AUG-05 2AOQ TITLE CRYSTAL STRUCTURE OF MUTH-UNMETHYLATED DNA COMPLEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-D(*GP*CP*AP*TP*GP*AP*TP*CP*AP*TP*GP*C)-3'; COMPND 3 CHAIN: B, C; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: DNA MISMATCH REPAIR PROTEIN MUTH; COMPND 7 CHAIN: A; COMPND 8 SYNONYM: METHYL-DIRECTED MISMATCH REPAIR PROTEIN; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 MOL_ID: 2; SOURCE 4 ORGANISM_SCIENTIFIC: HAEMOPHILUS INFLUENZAE; SOURCE 5 ORGANISM_TAXID: 727; SOURCE 6 GENE: MUTH; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 9 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 10 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 11 EXPRESSION_SYSTEM_PLASMID: PET15B-MUTH KEYWDS GATC RECOGNITION, HYDROLASE-DNA COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.Y.LEE,J.CHANG,N.JOSEPH,R.GHIRLANDO,D.N.RAO,W.YANG REVDAT 3 23-AUG-23 2AOQ 1 REMARK LINK REVDAT 2 24-FEB-09 2AOQ 1 VERSN REVDAT 1 11-OCT-05 2AOQ 0 JRNL AUTH J.Y.LEE,J.CHANG,N.JOSEPH,R.GHIRLANDO,D.N.RAO,W.YANG JRNL TITL MUTH COMPLEXED WITH HEMI- AND UNMETHYLATED DNAS: COUPLING JRNL TITL 2 BASE RECOGNITION AND DNA CLEAVAGE. JRNL REF MOL.CELL V. 20 155 2005 JRNL REFN ISSN 1097-2765 JRNL PMID 16209953 JRNL DOI 10.1016/J.MOLCEL.2005.08.019 REMARK 2 REMARK 2 RESOLUTION. 2.20 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 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) : 2.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.85 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 428123.820 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 90.8 REMARK 3 NUMBER OF REFLECTIONS : 16344 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) : 0.199 REMARK 3 FREE R VALUE : 0.220 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1642 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 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) : 2.20 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.34 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 61.10 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1654 REMARK 3 BIN R VALUE (WORKING SET) : 0.3220 REMARK 3 BIN FREE R VALUE : 0.3700 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 9.70 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 177 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.028 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1710 REMARK 3 NUCLEIC ACID ATOMS : 486 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 154 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 23.20 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 49.50 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 6.56000 REMARK 3 B22 (A**2) : 6.56000 REMARK 3 B33 (A**2) : -13.12000 REMARK 3 B12 (A**2) : 8.96000 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) : 0.28 REMARK 3 ESD FROM SIGMAA (A) : 0.36 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) : 0.33 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.41 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.200 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.080 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) : 1.500 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.600 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.140 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.310 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.36 REMARK 3 BSOL : 52.77 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 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : DNA-RNA.TOP REMARK 3 TOPOLOGY FILE 3 : WATER.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 2AOQ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-AUG-05. REMARK 100 THE DEPOSITION ID IS D_1000034139. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 25-OCT-04 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 : APS REMARK 200 BEAMLINE : 22-ID 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 : MIRRORS REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16986 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.4 REMARK 200 DATA REDUNDANCY : 7.400 REMARK 200 R MERGE (I) : 0.06800 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 30.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.28 REMARK 200 COMPLETENESS FOR SHELL (%) : 64.6 REMARK 200 DATA REDUNDANCY IN SHELL : 4.50 REMARK 200 R MERGE FOR SHELL (I) : 0.35400 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.650 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 2AZO, CHAIN B REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 54.30 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.69 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, CALCIUM ACETATE, CACODYLATE, REMARK 280 PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/2 REMARK 290 6555 X-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 -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 0.00000 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 0.00000 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 23.37750 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 23.37750 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 23.37750 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 229 REMARK 465 SER A 230 REMARK 465 LEU A 231 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 LYS A 66 CG CD CE NZ REMARK 470 GLU A 68 CG CD OE1 OE2 REMARK 470 GLN A 102 CG CD OE1 NE2 REMARK 470 ASN A 103 CG OD1 ND2 REMARK 470 SER A 104 OG REMARK 470 VAL A 106 CG1 CG2 REMARK 470 LYS A 107 CD CE NZ 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 47 48.18 -153.10 REMARK 500 GLU A 68 -2.79 44.71 REMARK 500 LYS A 169 34.51 -86.79 REMARK 500 ALA A 175 -7.33 -59.78 REMARK 500 ASN A 189 -166.90 -174.46 REMARK 500 GLU A 227 20.06 -72.89 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 DA C 3 0.08 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 CA A 232 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DT C 4 O3' REMARK 620 2 DG C 5 OP1 53.2 REMARK 620 3 GLU A 56 OE2 111.0 87.7 REMARK 620 4 THR A 62 O 139.9 160.8 74.4 REMARK 620 5 ASP A 70 OD1 124.6 74.4 80.4 95.4 REMARK 620 6 HOH A 258 O 69.8 106.5 72.1 74.8 152.4 REMARK 620 7 HOH A 259 O 79.3 89.2 164.0 106.2 83.6 123.7 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 233 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DG C 5 OP1 REMARK 620 2 HOH C 20 O 86.6 REMARK 620 3 ASP A 70 OD1 62.9 149.3 REMARK 620 4 ASP A 70 OD2 104.2 162.4 44.9 REMARK 620 5 GLU A 77 OE1 100.2 78.9 108.5 85.4 REMARK 620 6 LEU A 78 O 161.1 83.1 124.9 89.8 93.3 REMARK 620 7 HOH A 260 O 83.2 95.3 78.4 99.7 173.1 82.1 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 CA A 232 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 233 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2AOR RELATED DB: PDB DBREF 2AOQ A 9 231 UNP P44688 MUTH_HAEIN 1 223 DBREF 2AOQ B 1 12 PDB 2AOQ 2AOQ 1 12 DBREF 2AOQ C 1 12 PDB 2AOQ 2AOQ 1 12 SEQRES 1 B 12 DG DC DA DT DG DA DT DC DA DT DG DC SEQRES 1 C 12 DG DC DA DT DG DA DT DC DA DT DG DC SEQRES 1 A 223 MET ILE PRO GLN THR LEU GLU GLN LEU LEU SER GLN ALA SEQRES 2 A 223 GLN SER ILE ALA GLY LEU THR PHE GLY GLU LEU ALA ASP SEQRES 3 A 223 GLU LEU HIS ILE PRO VAL PRO ILE ASP LEU LYS ARG ASP SEQRES 4 A 223 LYS GLY TRP VAL GLY MET LEU LEU GLU ARG ALA LEU GLY SEQRES 5 A 223 ALA THR ALA GLY SER LYS ALA GLU GLN ASP PHE SER HIS SEQRES 6 A 223 LEU GLY VAL GLU LEU LYS THR LEU PRO ILE ASN ALA GLU SEQRES 7 A 223 GLY TYR PRO LEU GLU THR THR PHE VAL SER LEU ALA PRO SEQRES 8 A 223 LEU VAL GLN ASN SER GLY VAL LYS TRP GLU ASN SER HIS SEQRES 9 A 223 VAL ARG HIS LYS LEU SER CYS VAL LEU TRP MET PRO ILE SEQRES 10 A 223 GLU GLY SER ARG HIS ILE PRO LEU ARG GLU ARG HIS ILE SEQRES 11 A 223 GLY ALA PRO ILE PHE TRP LYS PRO THR ALA GLU GLN GLU SEQRES 12 A 223 ARG GLN LEU LYS GLN ASP TRP GLU GLU LEU MET ASP LEU SEQRES 13 A 223 ILE VAL LEU GLY LYS LEU ASP GLN ILE THR ALA ARG ILE SEQRES 14 A 223 GLY GLU VAL MET GLN LEU ARG PRO LYS GLY ALA ASN SER SEQRES 15 A 223 ARG ALA VAL THR LYS GLY ILE GLY LYS ASN GLY GLU ILE SEQRES 16 A 223 ILE ASP THR LEU PRO LEU GLY PHE TYR LEU ARG LYS GLU SEQRES 17 A 223 PHE THR ALA GLN ILE LEU ASN ALA PHE LEU GLU THR LYS SEQRES 18 A 223 SER LEU HET CA A 232 1 HET CA A 233 1 HETNAM CA CALCIUM ION FORMUL 4 CA 2(CA 2+) FORMUL 6 HOH *154(H2 O) HELIX 1 1 THR A 13 ALA A 25 1 13 HELIX 2 2 THR A 28 LEU A 36 1 9 HELIX 3 3 GLY A 49 GLY A 60 1 12 HELIX 4 5 SER A 111 LEU A 117 1 7 HELIX 5 6 PRO A 132 ARG A 136 5 5 HELIX 6 7 THR A 147 LEU A 167 1 21 HELIX 7 8 GLY A 168 GLN A 172 5 5 HELIX 8 9 ARG A 214 GLU A 227 1 14 SHEET 1 A 3 GLU A 77 ILE A 83 0 SHEET 2 A 3 VAL A 120 GLU A 126 1 O LEU A 121 N GLU A 77 SHEET 3 A 3 ILE A 142 TRP A 144 -1 O TRP A 144 N VAL A 120 SHEET 1 B 3 THR A 93 LEU A 97 0 SHEET 2 B 3 LEU A 209 LEU A 213 -1 O PHE A 211 N VAL A 95 SHEET 3 B 3 MET A 181 PRO A 185 -1 N ARG A 184 O GLY A 210 SHEET 1 C 2 THR A 194 ILE A 197 0 SHEET 2 C 2 ILE A 203 THR A 206 -1 O THR A 206 N THR A 194 LINK O3' DT C 4 CA CA A 232 1555 1555 2.98 LINK OP1 DG C 5 CA CA A 232 1555 1555 2.51 LINK OP1 DG C 5 CA CA A 233 1555 1555 2.30 LINK O HOH C 20 CA CA A 233 1555 1555 2.50 LINK OE2 GLU A 56 CA CA A 232 1555 1555 2.33 LINK O THR A 62 CA CA A 232 1555 1555 2.88 LINK OD1 ASP A 70 CA CA A 232 1555 1555 2.29 LINK OD1 ASP A 70 CA CA A 233 1555 1555 3.12 LINK OD2 ASP A 70 CA CA A 233 1555 1555 2.35 LINK OE1 GLU A 77 CA CA A 233 1555 1555 2.46 LINK O LEU A 78 CA CA A 233 1555 1555 2.35 LINK CA CA A 232 O HOH A 258 1555 1555 2.39 LINK CA CA A 232 O HOH A 259 1555 1555 2.29 LINK CA CA A 233 O HOH A 260 1555 1555 2.39 SITE 1 AC1 7 GLU A 56 THR A 62 ASP A 70 HOH A 258 SITE 2 AC1 7 HOH A 259 DT C 4 DG C 5 SITE 1 AC2 6 ASP A 70 GLU A 77 LEU A 78 HOH A 260 SITE 2 AC2 6 DG C 5 HOH C 20 CRYST1 114.624 114.624 46.755 90.00 90.00 120.00 P 63 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 0.008724 0.005037 0.000000 0.00000 SCALE2 0.000000 0.010074 0.000000 0.00000 SCALE3 0.000000 0.000000 0.021388 0.00000