HEADER HYDROLASE 19-JUN-15 4S3S TITLE CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT DELTA+PHS TITLE 2 I92K/V23A AT CRYOGENIC TEMPERATURE COMPND MOL_ID: 1; COMPND 2 MOLECULE: THERMONUCLEASE; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: NUCLEASE A (UNP RESIDUES 83-231); COMPND 5 EC: 3.1.31.1; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STAPHYLOCOCCUS AUREUS; SOURCE 3 ORGANISM_TAXID: 1280; SOURCE 4 GENE: NUC; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PET24A+ KEYWDS OB-FOLD, NUCLEASE, NUCLEIC ACID, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR J.A.CARO,G.SUE,J.L.SCHLESSMAN,A.HEROUX,B.GARCIA-MORENO E. REVDAT 2 20-SEP-23 4S3S 1 REMARK SEQADV LINK REVDAT 1 01-JUL-15 4S3S 0 JRNL AUTH J.A.CARO,J.L.SCHLESSMAN,B.GARCIA-MORENO E. JRNL TITL BURIED IONIZABLE RESIDUES JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.64 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.6.0117 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.64 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.98 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.3 REMARK 3 NUMBER OF REFLECTIONS : 15283 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 + TEST SET) : 0.177 REMARK 3 R VALUE (WORKING SET) : 0.173 REMARK 3 FREE R VALUE : 0.216 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.800 REMARK 3 FREE R VALUE TEST SET COUNT : 1666 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.64 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.68 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1046 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 92.89 REMARK 3 BIN R VALUE (WORKING SET) : 0.1810 REMARK 3 BIN FREE R VALUE SET COUNT : 103 REMARK 3 BIN FREE R VALUE : 0.2070 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1032 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 26 REMARK 3 SOLVENT ATOMS : 113 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 27.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 19.28 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.38000 REMARK 3 B22 (A**2) : -1.39000 REMARK 3 B33 (A**2) : 1.86000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.55000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.100 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.103 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.056 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.564 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.961 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.941 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1110 ; 0.018 ; 0.020 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1497 ; 1.887 ; 2.002 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 137 ; 6.074 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 49 ;32.979 ;24.898 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 221 ;13.887 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 5 ; 8.384 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 159 ; 0.141 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 807 ; 0.012 ; 0.021 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN USED IF PRESENT IN REMARK 3 THE INPUT REMARK 4 REMARK 4 4S3S COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 22-JUN-15. REMARK 100 THE DEPOSITION ID IS D_1000088143. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-SEP-10 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X25 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.979 REMARK 200 MONOCHROMATOR : DOUBLE CRYSTAL SI(111) WITH REMARK 200 CRYOGENICALLY-COOLED FIRST REMARK 200 CRYSTAL AND SAGITTALLY-BENT REMARK 200 SECOND CRYSTAL HORIZONTALLY- REMARK 200 FOCUSING AT 3.3:1 DEMAGNIFICATION REMARK 200 OPTICS : MERIDIONALLY-BENT FUSED SILICA REMARK 200 MIRROR WITH PALLADIUM AND REMARK 200 UNCOATED STRIPES VERTICALLY- REMARK 200 FOCUSING AT 6.6:1 DEMAGNIFICATION REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK, HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16994 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.640 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.3 REMARK 200 DATA REDUNDANCY : 6.200 REMARK 200 R MERGE (I) : 0.04400 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 19.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.64 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.67 REMARK 200 COMPLETENESS FOR SHELL (%) : 89.4 REMARK 200 DATA REDUNDANCY IN SHELL : 5.40 REMARK 200 R MERGE FOR SHELL (I) : 0.16500 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 11.50 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER 2.2.1 REMARK 200 STARTING MODEL: PDB ENTRY 3BDC REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 44.25 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.21 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 25% MPD, 25 MM POTASSIUM PHOSPHATE, REMARK 280 CALCIUM CHLORIDE, PDTP, PH 8.0, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 277K 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 29.97800 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: MONOMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 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 ALA A 1 REMARK 465 THR A 2 REMARK 465 SER A 3 REMARK 465 THR A 4 REMARK 465 LYS A 5 REMARK 465 LYS A 6 REMARK 465 GLU A 142 REMARK 465 ASP A 143 REMARK 465 ASN A 144 REMARK 465 ALA A 145 REMARK 465 ASP A 146 REMARK 465 SER A 147 REMARK 465 GLY A 148 REMARK 465 GLN A 149 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 ILE A 18 -67.89 -120.28 REMARK 500 TYR A 54 -2.60 73.64 REMARK 500 ASN A 138 -108.92 50.82 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 202 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 21 OD2 REMARK 620 2 ASP A 40 OD1 81.7 REMARK 620 3 THR A 41 O 87.3 73.7 REMARK 620 4 GLU A 43 OE2 153.9 124.3 101.0 REMARK 620 5 THP A 201 O4P 95.2 68.8 141.7 93.4 REMARK 620 6 HOH A 304 O 76.5 136.8 140.5 81.6 76.4 REMARK 620 7 HOH A 339 O 79.7 136.7 66.7 81.0 151.4 75.0 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 THP A 201 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 202 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3BDC RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT DELTA+PHS AT REMARK 900 CRYOGENIC TEMPERATURE REMARK 900 RELATED ID: 3MEH RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT DELTA+PHS I92A REMARK 900 AT CRYOGENIC TEMPERATURE REMARK 900 RELATED ID: 3PMF RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT DELTA+PHS V23A REMARK 900 AT CRYOGENIC TEMPERATURE REMARK 900 RELATED ID: 1TT2 RELATED DB: PDB REMARK 900 CRYOGENIC CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT REMARK 900 TRUNCATED DELTA+PHS I92K DBREF 4S3S A 1 149 UNP P00644 NUC_STAAU 83 231 SEQADV 4S3S ALA A 23 UNP P00644 VAL 105 ENGINEERED MUTATION SEQADV 4S3S A UNP P00644 THR 126 DELETION SEQADV 4S3S A UNP P00644 LYS 127 DELETION SEQADV 4S3S A UNP P00644 HIS 128 DELETION SEQADV 4S3S A UNP P00644 PRO 129 DELETION SEQADV 4S3S A UNP P00644 LYS 130 DELETION SEQADV 4S3S A UNP P00644 LYS 131 DELETION SEQADV 4S3S PHE A 50 UNP P00644 GLY 132 ENGINEERED MUTATION SEQADV 4S3S ASN A 51 UNP P00644 VAL 133 ENGINEERED MUTATION SEQADV 4S3S LYS A 92 UNP P00644 ILE 174 ENGINEERED MUTATION SEQADV 4S3S GLY A 117 UNP P00644 PRO 199 ENGINEERED MUTATION SEQADV 4S3S LEU A 124 UNP P00644 HIS 206 ENGINEERED MUTATION SEQADV 4S3S ALA A 128 UNP P00644 SER 210 ENGINEERED MUTATION SEQRES 1 A 143 ALA THR SER THR LYS LYS LEU HIS LYS GLU PRO ALA THR SEQRES 2 A 143 LEU ILE LYS ALA ILE ASP GLY ASP THR ALA LYS LEU MET SEQRES 3 A 143 TYR LYS GLY GLN PRO MET THR PHE ARG LEU LEU LEU VAL SEQRES 4 A 143 ASP THR PRO GLU PHE ASN GLU LYS TYR GLY PRO GLU ALA SEQRES 5 A 143 SER ALA PHE THR LYS LYS MET VAL GLU ASN ALA LYS LYS SEQRES 6 A 143 ILE GLU VAL GLU PHE ASP LYS GLY GLN ARG THR ASP LYS SEQRES 7 A 143 TYR GLY ARG GLY LEU ALA TYR LYS TYR ALA ASP GLY LYS SEQRES 8 A 143 MET VAL ASN GLU ALA LEU VAL ARG GLN GLY LEU ALA LYS SEQRES 9 A 143 VAL ALA TYR VAL TYR LYS GLY ASN ASN THR HIS GLU GLN SEQRES 10 A 143 LEU LEU ARG LYS ALA GLU ALA GLN ALA LYS LYS GLU LYS SEQRES 11 A 143 LEU ASN ILE TRP SER GLU ASP ASN ALA ASP SER GLY GLN HET THP A 201 25 HET CA A 202 1 HETNAM THP THYMIDINE-3',5'-DIPHOSPHATE HETNAM CA CALCIUM ION FORMUL 2 THP C10 H16 N2 O11 P2 FORMUL 3 CA CA 2+ FORMUL 4 HOH *113(H2 O) HELIX 1 1 TYR A 54 ALA A 69 1 16 HELIX 2 2 VAL A 99 GLN A 106 1 8 HELIX 3 3 HIS A 121 GLU A 135 1 15 HELIX 4 4 LEU A 137 SER A 141 5 5 SHEET 1 A 7 LYS A 97 MET A 98 0 SHEET 2 A 7 GLY A 88 ALA A 94 -1 N ALA A 94 O LYS A 97 SHEET 3 A 7 ILE A 72 GLU A 75 -1 N GLU A 73 O TYR A 93 SHEET 4 A 7 LYS A 9 ALA A 17 -1 N GLU A 10 O VAL A 74 SHEET 5 A 7 THR A 22 TYR A 27 -1 O MET A 26 N THR A 13 SHEET 6 A 7 GLN A 30 LEU A 36 -1 O PHE A 34 N ALA A 23 SHEET 7 A 7 GLY A 88 ALA A 94 1 O GLY A 88 N ARG A 35 SHEET 1 B 2 VAL A 39 ASP A 40 0 SHEET 2 B 2 LYS A 110 VAL A 111 -1 O LYS A 110 N ASP A 40 LINK OD2 ASP A 21 CA CA A 202 1555 1555 2.86 LINK OD1 ASP A 40 CA CA A 202 1555 1555 2.77 LINK O THR A 41 CA CA A 202 1555 1555 2.92 LINK OE2 GLU A 43 CA CA A 202 1555 1555 3.01 LINK O4P THP A 201 CA CA A 202 1555 1555 3.07 LINK CA CA A 202 O HOH A 304 1555 1555 2.82 LINK CA CA A 202 O HOH A 339 1555 1555 2.95 SITE 1 AC1 22 ARG A 35 ASP A 40 LYS A 84 TYR A 85 SITE 2 AC1 22 ARG A 87 LEU A 89 TYR A 113 TYR A 115 SITE 3 AC1 22 LYS A 127 CA A 202 HOH A 302 HOH A 303 SITE 4 AC1 22 HOH A 304 HOH A 309 HOH A 319 HOH A 328 SITE 5 AC1 22 HOH A 334 HOH A 338 HOH A 344 HOH A 348 SITE 6 AC1 22 HOH A 366 HOH A 374 SITE 1 AC2 7 ASP A 21 ASP A 40 THR A 41 GLU A 43 SITE 2 AC2 7 THP A 201 HOH A 304 HOH A 339 CRYST1 31.112 59.956 38.291 90.00 94.72 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 0.032142 0.000000 0.002655 0.00000 SCALE2 0.000000 0.016679 0.000000 0.00000 SCALE3 0.000000 0.000000 0.026205 0.00000