HEADER HYDROLASE/DNA-RNA HYBRID 24-JUL-10 3O3F TITLE T. MARITIMA RNASE H2 D107N IN COMPLEX WITH NUCLEIC ACID SUBSTRATE AND TITLE 2 MAGNESIUM IONS COMPND MOL_ID: 1; COMPND 2 MOLECULE: RIBONUCLEASE HII; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: RNASE HII; COMPND 5 EC: 3.1.26.4; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES; COMPND 8 MOL_ID: 2; COMPND 9 MOLECULE: DNA (5'-D(*GP*AP*AP*TP*CP*AP*GP*GP*TP*GP*TP*C)-3'); COMPND 10 CHAIN: C; COMPND 11 ENGINEERED: YES; COMPND 12 MOL_ID: 3; COMPND 13 MOLECULE: DNA/RNA (5'-D(*GP*AP*CP*AP*C)-R(P*C)-D(P*TP*GP*AP*TP*TP*C)- COMPND 14 3'); COMPND 15 CHAIN: D; COMPND 16 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: THERMOTOGA MARITIMA; SOURCE 3 ORGANISM_TAXID: 2336; SOURCE 4 GENE: RNHB, TM_0915; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET21; SOURCE 10 MOL_ID: 2; SOURCE 11 SYNTHETIC: YES; SOURCE 12 MOL_ID: 3; SOURCE 13 SYNTHETIC: YES KEYWDS RNASE H, NUCLEASE, HYDROLASE-DNA-RNA HYBRID COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR M.P.RYCHLIK,H.CHON,S.M.CERRITELLI,P.KLIMEK,R.J.CROUCH,M.NOWOTNY REVDAT 2 21-FEB-24 3O3F 1 REMARK SEQADV LINK REVDAT 1 08-DEC-10 3O3F 0 JRNL AUTH M.P.RYCHLIK,H.CHON,S.M.CERRITELLI,P.KLIMEK,R.J.CROUCH, JRNL AUTH 2 M.NOWOTNY JRNL TITL CRYSTAL STRUCTURES OF RNASE H2 IN COMPLEX WITH NUCLEIC ACID JRNL TITL 2 REVEAL THE MECHANISM OF RNA-DNA JUNCTION RECOGNITION AND JRNL TITL 3 CLEAVAGE. JRNL REF MOL.CELL V. 40 658 2010 JRNL REFN ISSN 1097-2765 JRNL PMID 21095591 JRNL DOI 10.1016/J.MOLCEL.2010.11.001 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE: 1.6.1_357) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.22 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 0.050 REMARK 3 COMPLETENESS FOR RANGE (%) : 88.8 REMARK 3 NUMBER OF REFLECTIONS : 17874 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.194 REMARK 3 R VALUE (WORKING SET) : 0.191 REMARK 3 FREE R VALUE : 0.244 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.280 REMARK 3 FREE R VALUE TEST SET COUNT : 943 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 29.2267 - 3.8234 0.99 2775 157 0.1541 0.2064 REMARK 3 2 3.8234 - 3.0358 0.99 2694 159 0.1760 0.2136 REMARK 3 3 3.0358 - 2.6523 0.94 2576 133 0.2117 0.2584 REMARK 3 4 2.6523 - 2.4099 0.93 2514 135 0.2228 0.3256 REMARK 3 5 2.4099 - 2.2373 0.88 2374 132 0.2298 0.3033 REMARK 3 6 2.2373 - 2.1054 0.82 2208 123 0.2426 0.3174 REMARK 3 7 2.1054 - 2.0000 0.66 1790 104 0.2500 0.3050 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : 0.34 REMARK 3 B_SOL : 41.23 REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.300 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 26.380 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) : -0.64810 REMARK 3 B22 (A**2) : 8.72070 REMARK 3 B33 (A**2) : -8.07260 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 2.83090 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.007 2314 REMARK 3 ANGLE : 1.163 3222 REMARK 3 CHIRALITY : 0.069 365 REMARK 3 PLANARITY : 0.004 335 REMARK 3 DIHEDRAL : 18.550 913 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 3O3F COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-JUL-10. REMARK 100 THE DEPOSITION ID IS D_1000060615. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-NOV-09 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : BESSY REMARK 200 BEAMLINE : 14.2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.91841 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARMOSAIC 225 MM CCD REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 19185 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.9 REMARK 200 DATA REDUNDANCY : 3.400 REMARK 200 R MERGE (I) : 0.06400 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) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.03 REMARK 200 COMPLETENESS FOR SHELL (%) : 68.4 REMARK 200 DATA REDUNDANCY IN SHELL : 2.10 REMARK 200 R MERGE FOR SHELL (I) : 0.42400 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.16 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.33 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.3 M MGCL2, 23% PEG 3350, 0.1 M REMARK 280 HEPES, PH 7.5, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 291K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z REMARK 290 4555 -X+1/2,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 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 52.53100 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 24.28500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 52.53100 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 24.28500 REMARK 290 SMTRY3 4 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 3580 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 13090 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -41.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, C, D 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH C 91 LIES ON A SPECIAL POSITION. 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 38 CE NZ REMARK 470 GLU A 41 CG CD OE1 OE2 REMARK 470 LYS A 159 CE NZ REMARK 470 GLU A 202 CG CD OE1 OE2 REMARK 470 LYS A 222 CE NZ REMARK 470 SER A 223 OG 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 DA C 3 O4' - C1' - N9 ANGL. DEV. = 2.9 DEGREES REMARK 500 DT C 4 O4' - C1' - N1 ANGL. DEV. = 3.1 DEGREES REMARK 500 DC C 5 O4' - C4' - C3' ANGL. DEV. = -3.8 DEGREES REMARK 500 DC C 5 C4' - C3' - C2' ANGL. DEV. = -4.3 DEGREES REMARK 500 DC C 5 O4' - C1' - N1 ANGL. DEV. = 3.7 DEGREES REMARK 500 DG C 7 O4' - C1' - N9 ANGL. DEV. = 6.6 DEGREES REMARK 500 DT C 9 O4' - C1' - N1 ANGL. DEV. = 2.1 DEGREES REMARK 500 DT C 11 O4' - C1' - C2' ANGL. DEV. = 3.1 DEGREES REMARK 500 DC C 12 O4' - C1' - N1 ANGL. DEV. = 2.9 DEGREES REMARK 500 DC D 3 O4' - C1' - N1 ANGL. DEV. = 3.0 DEGREES REMARK 500 DA D 4 C4' - C3' - C2' ANGL. DEV. = -5.4 DEGREES REMARK 500 DA D 4 O4' - C1' - N9 ANGL. DEV. = 2.6 DEGREES REMARK 500 DC D 5 O4' - C4' - C3' ANGL. DEV. = -2.9 DEGREES REMARK 500 DC D 5 O4' - C1' - N1 ANGL. DEV. = 2.4 DEGREES REMARK 500 DA D 9 O4' - C1' - N9 ANGL. DEV. = -5.5 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 44 148.18 -176.62 REMARK 500 ASP A 45 123.70 -24.02 REMARK 500 ASN A 81 155.78 88.48 REMARK 500 ASP A 124 6.01 -64.64 REMARK 500 GLN A 125 -1.49 -140.20 REMARK 500 LYS A 159 -60.09 -104.24 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 A 224 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 18 OD2 REMARK 620 2 GLU A 19 O 76.4 REMARK 620 3 HOH A 257 O 99.8 175.9 REMARK 620 4 HOH A 269 O 74.6 90.5 89.9 REMARK 620 5 C D 6 OP1 116.9 103.8 76.5 163.2 REMARK 620 6 DT D 7 OP2 156.4 99.2 84.9 82.3 86.7 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG D 13 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 300 O REMARK 620 2 HOH A 304 O 91.0 REMARK 620 3 HOH A 318 O 67.3 59.1 REMARK 620 4 HOH D 100 O 120.8 137.1 104.5 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 MG A 224 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG D 13 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3O3G RELATED DB: PDB REMARK 900 RELATED ID: 3O3H RELATED DB: PDB REMARK 900 RELATED ID: 2ETJ RELATED DB: PDB REMARK 900 APO STRUCTURE OF T. MARITIMA RNASE H2 DBREF 3O3F A 2 223 UNP Q9X017 RNH2_THEMA 2 223 DBREF 3O3F C 1 12 PDB 3O3F 3O3F 1 12 DBREF 3O3F D 1 12 PDB 3O3F 3O3F 1 12 SEQADV 3O3F ASN A 107 UNP Q9X017 ASP 107 ENGINEERED MUTATION SEQRES 1 A 222 GLY ILE ASP GLU LEU TYR LYS LYS GLU PHE GLY ILE VAL SEQRES 2 A 222 ALA GLY VAL ASP GLU ALA GLY ARG GLY CYS LEU ALA GLY SEQRES 3 A 222 PRO VAL VAL ALA ALA ALA VAL VAL LEU GLU LYS GLU ILE SEQRES 4 A 222 GLU GLY ILE ASN ASP SER LYS GLN LEU SER PRO ALA LYS SEQRES 5 A 222 ARG GLU ARG LEU LEU ASP GLU ILE MET GLU LYS ALA ALA SEQRES 6 A 222 VAL GLY ILE GLY ILE ALA SER PRO GLU GLU ILE ASP LEU SEQRES 7 A 222 TYR ASN ILE PHE ASN ALA THR LYS LEU ALA MET ASN ARG SEQRES 8 A 222 ALA LEU GLU ASN LEU SER VAL LYS PRO SER PHE VAL LEU SEQRES 9 A 222 VAL ASN GLY LYS GLY ILE GLU LEU SER VAL PRO GLY THR SEQRES 10 A 222 CYS LEU VAL LYS GLY ASP GLN LYS SER LYS LEU ILE GLY SEQRES 11 A 222 ALA ALA SER ILE VAL ALA LYS VAL PHE ARG ASP ARG LEU SEQRES 12 A 222 MET SER GLU PHE HIS ARG MET TYR PRO GLN PHE SER PHE SEQRES 13 A 222 HIS LYS HIS LYS GLY TYR ALA THR LYS GLU HIS LEU ASN SEQRES 14 A 222 GLU ILE ARG LYS ASN GLY VAL LEU PRO ILE HIS ARG LEU SEQRES 15 A 222 SER PHE GLU PRO VAL LEU GLU LEU LEU THR ASP ASP LEU SEQRES 16 A 222 LEU ARG GLU PHE PHE GLU LYS GLY LEU ILE SER GLU ASN SEQRES 17 A 222 ARG PHE GLU ARG ILE LEU ASN LEU LEU GLY ALA ARG LYS SEQRES 18 A 222 SER SEQRES 1 C 12 DG DA DA DT DC DA DG DG DT DG DT DC SEQRES 1 D 12 DG DA DC DA DC C DT DG DA DT DT DC HET MG A 224 1 HET MG D 13 1 HETNAM MG MAGNESIUM ION FORMUL 4 MG 2(MG 2+) FORMUL 6 HOH *146(H2 O) HELIX 1 1 GLY A 2 GLY A 12 1 11 HELIX 2 2 ASP A 45 LEU A 49 5 5 HELIX 3 3 SER A 50 LYS A 64 1 15 HELIX 4 4 SER A 73 ASN A 81 1 9 HELIX 5 5 ASN A 81 ASN A 96 1 16 HELIX 6 6 LYS A 122 SER A 127 1 6 HELIX 7 7 SER A 127 TYR A 152 1 26 HELIX 8 8 SER A 156 LYS A 161 1 6 HELIX 9 9 THR A 165 GLY A 176 1 12 HELIX 10 10 PHE A 185 LEU A 192 1 8 HELIX 11 11 THR A 193 LYS A 203 1 11 HELIX 12 12 SER A 207 ALA A 220 1 14 SHEET 1 A 5 ALA A 65 ALA A 72 0 SHEET 2 A 5 VAL A 29 LEU A 36 -1 N VAL A 35 O ALA A 66 SHEET 3 A 5 VAL A 14 ALA A 20 -1 N ALA A 20 O VAL A 30 SHEET 4 A 5 PHE A 103 ASN A 107 1 O LEU A 105 N ALA A 15 SHEET 5 A 5 GLY A 117 LEU A 120 1 O LEU A 120 N VAL A 106 LINK OD2BASP A 18 MG MG A 224 1555 1555 2.57 LINK O GLU A 19 MG MG A 224 1555 1555 2.50 LINK MG MG A 224 O HOH A 257 1555 1555 2.51 LINK MG MG A 224 O HOH A 269 1555 1555 2.66 LINK MG MG A 224 OP1 C D 6 1555 1555 2.52 LINK MG MG A 224 OP2 DT D 7 1555 1555 2.43 LINK O HOH A 300 MG MG D 13 1555 1555 2.76 LINK O HOH A 304 MG MG D 13 1555 1555 2.81 LINK O HOH A 318 MG MG D 13 1555 1555 2.55 LINK MG MG D 13 O HOH D 100 1555 1555 2.46 SITE 1 AC1 6 ASP A 18 GLU A 19 HOH A 257 HOH A 269 SITE 2 AC1 6 C D 6 DT D 7 SITE 1 AC2 6 ASP A 124 HOH A 300 HOH A 304 HOH A 318 SITE 2 AC2 6 C D 6 HOH D 100 CRYST1 105.062 48.570 78.391 90.00 131.80 90.00 C 1 2 1 4 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 0.009518 0.000000 0.008510 0.00000 SCALE2 0.000000 0.020589 0.000000 0.00000 SCALE3 0.000000 0.000000 0.017112 0.00000