HEADER HYDROLASE 23-JAN-08 3C1E TITLE CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT DELTA+PHS L125K TITLE 2 AT CRYOGENIC TEMPERATURE COMPND MOL_ID: 1; COMPND 2 MOLECULE: THERMONUCLEASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: TNASE, MICROCOCCAL NUCLEASE, STAPHYLOCOCCAL NUCLEASE; 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 GENE: NUC; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PET24A+ KEYWDS STAPHYLOCOCCAL NUCLEASE, HYPERSTABLE VARIANT, HYDROLASE, PDTP, KEYWDS 2 CALCIUM, ENDONUCLEASE, METAL-BINDING, SECRETED, ZYMOGEN EXPDTA X-RAY DIFFRACTION AUTHOR V.S.KHANGULOV,J.L.SCHLESSMAN,E.B.GARCIA-MORENO REVDAT 4 30-AUG-23 3C1E 1 REMARK REVDAT 3 20-OCT-21 3C1E 1 REMARK SEQADV REVDAT 2 24-FEB-09 3C1E 1 VERSN REVDAT 1 04-NOV-08 3C1E 0 JRNL AUTH V.S.KHANGULOV,J.L.SCHLESSMAN,E.B.GARCIA-MORENO JRNL TITL CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT JRNL TITL 2 DELTA+PHS L125K AT CRYOGENIC TEMPERATURE JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 27.61 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.1 REMARK 3 NUMBER OF REFLECTIONS : 10635 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) : 0.201 REMARK 3 R VALUE (WORKING SET) : 0.195 REMARK 3 FREE R VALUE : 0.253 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.800 REMARK 3 FREE R VALUE TEST SET COUNT : 1038 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) : 1.90 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.95 REMARK 3 REFLECTION IN BIN (WORKING SET) : 669 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 88.14 REMARK 3 BIN R VALUE (WORKING SET) : 0.2230 REMARK 3 BIN FREE R VALUE SET COUNT : 67 REMARK 3 BIN FREE R VALUE : 0.2960 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1052 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 26 REMARK 3 SOLVENT ATOMS : 103 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 27.40 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 21.19 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.00000 REMARK 3 B22 (A**2) : 0.01000 REMARK 3 B33 (A**2) : -0.01000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -0.01000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.194 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.178 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.114 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 3.788 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.944 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.905 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1105 ; 0.011 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1486 ; 1.434 ; 2.000 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 132 ; 5.729 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 49 ;34.047 ;24.898 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 217 ;14.633 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 5 ;10.454 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 157 ; 0.101 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 803 ; 0.005 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 471 ; 0.198 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 749 ; 0.307 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 115 ; 0.141 ; 0.200 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): 5 ; 0.140 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 11 ; 0.141 ; 0.200 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): 674 ; 0.896 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1043 ; 1.453 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 495 ; 2.034 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 442 ; 3.169 ; 4.500 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 ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 3C1E COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 24-JAN-08. REMARK 100 THE DEPOSITION ID IS D_1000046219. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-JAN-08 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 9.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : SEALED TUBE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : OTHER REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GE111 REMARK 200 OPTICS : MULTI-LAYER OPTICS REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : BRUKER APEX II REMARK 200 INTENSITY-INTEGRATION SOFTWARE : SAINT REMARK 200 DATA SCALING SOFTWARE : SAINT V7.34A REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 11202 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 38.090 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 11.09 REMARK 200 R MERGE (I) : 0.03640 REMARK 200 R SYM (I) : 0.02150 REMARK 200 FOR THE DATA SET : 38.4500 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.8 REMARK 200 DATA REDUNDANCY IN SHELL : 3.90 REMARK 200 R MERGE FOR SHELL (I) : 0.17090 REMARK 200 R SYM FOR SHELL (I) : 0.16160 REMARK 200 FOR SHELL : 6.050 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: 1TQO.PDB REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 44.44 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.21 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 32% MPD, 25 MM POTASSIUM PHOSPHATE, REMARK 280 CALCIUM CHLORIDE, PDTP, PH 9.0, 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 30.22650 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 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 -70.30 -123.79 REMARK 500 ASN A 138 -103.00 52.95 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 150 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 21 OD2 REMARK 620 2 ASP A 40 OD1 80.9 REMARK 620 3 THR A 41 O 90.6 77.7 REMARK 620 4 HOH A 157 O 79.5 136.4 140.6 REMARK 620 5 HOH A 236 O 85.1 142.0 67.3 73.9 REMARK 620 N 1 2 3 4 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 150 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE THP A 151 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2RMB RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT DELTA+PHS I72K REMARK 900 AT CRYOGENIC TEMPERATURE 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: 1TQO RELATED DB: PDB REMARK 900 CRYOGENIC CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE VARIANT REMARK 900 TRUNCATED DELTA+PHS I92E REMARK 900 RELATED ID: 2SNM RELATED DB: PDB REMARK 900 IN A STAPHYLOCOCCAL NUCLEASE MUTANT THE SIDE-CHAIN OF A LYSINE REMARK 900 REPLACING VALINE 66 IS FULLY BURIED IN THE HYDROPHOBIC CORE. REMARK 900 RELATED ID: 1STN RELATED DB: PDB REMARK 900 THE CRYSTAL STRUCTURE OF STAPHYLOCOCCAL NUCLEASE REFINED AT 1.7 REMARK 900 ANGSTROMS RESOLUTION REMARK 900 RELATED ID: 3C1F RELATED DB: PDB DBREF 3C1E A 1 149 UNP P00644 NUC_STAAU 83 231 SEQADV 3C1E A UNP P00644 THR 126 DELETION SEQADV 3C1E A UNP P00644 LYS 127 DELETION SEQADV 3C1E A UNP P00644 HIS 128 DELETION SEQADV 3C1E A UNP P00644 PRO 129 DELETION SEQADV 3C1E A UNP P00644 LYS 130 DELETION SEQADV 3C1E A UNP P00644 LYS 131 DELETION SEQADV 3C1E PHE A 50 UNP P00644 GLY 132 ENGINEERED MUTATION SEQADV 3C1E ASN A 51 UNP P00644 VAL 133 ENGINEERED MUTATION SEQADV 3C1E GLY A 117 UNP P00644 PRO 199 ENGINEERED MUTATION SEQADV 3C1E LEU A 124 UNP P00644 HIS 206 ENGINEERED MUTATION SEQADV 3C1E LYS A 125 UNP P00644 LEU 207 ENGINEERED MUTATION SEQADV 3C1E 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 VAL 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 ILE 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 LYS 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 CA A 150 1 HET THP A 151 25 HETNAM CA CALCIUM ION HETNAM THP THYMIDINE-3',5'-DIPHOSPHATE FORMUL 2 CA CA 2+ FORMUL 3 THP C10 H16 N2 O11 P2 FORMUL 4 HOH *103(H2 O) HELIX 1 1 TYR A 54 ASN A 68 1 15 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 GLU A 142 5 6 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 75 O TYR A 91 SHEET 4 A 7 GLU A 10 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 VAL 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 150 1555 1555 2.73 LINK OD1 ASP A 40 CA CA A 150 1555 1555 2.72 LINK O THR A 41 CA CA A 150 1555 1555 2.83 LINK CA CA A 150 O HOH A 157 1555 1555 2.97 LINK CA CA A 150 O HOH A 236 1555 1555 2.73 SITE 1 AC1 6 ASP A 21 ASP A 40 THR A 41 GLU A 43 SITE 2 AC1 6 HOH A 157 HOH A 236 SITE 1 AC2 20 ARG A 35 LEU A 37 ASP A 40 LYS A 84 SITE 2 AC2 20 TYR A 85 ARG A 87 LEU A 89 TYR A 113 SITE 3 AC2 20 TYR A 115 LYS A 127 HOH A 157 HOH A 162 SITE 4 AC2 20 HOH A 184 HOH A 198 HOH A 229 HOH A 234 SITE 5 AC2 20 HOH A 239 HOH A 240 HOH A 243 HOH A 254 CRYST1 31.075 60.453 38.144 90.00 93.10 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 0.032180 0.000000 0.001744 0.00000 SCALE2 0.000000 0.016542 0.000000 0.00000 SCALE3 0.000000 0.000000 0.026255 0.00000