HEADER TRANSFERASE 23-FEB-01 1I52 TITLE CRYSTAL STRUCTURE OF 4-DIPHOSPHOCYTIDYL-2-C-METHYLERYTHRITOL (CDP-ME) TITLE 2 SYNTHASE (YGBP) INVOLVED IN MEVALONATE INDEPENDENT ISOPRENOID TITLE 3 BIOSYNTHESIS COMPND MOL_ID: 1; COMPND 2 MOLECULE: 4-DIPHOSPHOCYTIDYL-2-C-METHYLERYTHRITOL SYNTHASE; COMPND 3 CHAIN: A; COMPND 4 EC: 2.7.7.-; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 83333; SOURCE 4 STRAIN: K12; SOURCE 5 GENE: ISPD; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PHIS8 KEYWDS CYTIDYLYLTRANSFERASE, DEOXYXYLULOSE-5-PHOSPHATE PATHWAY (DXP), KEYWDS 2 ISOPRENOID BIOSYNTHESYS, MEP, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR S.B.RICHARD,M.E.BOWMAN,W.KWIATKOWSKI,I.KANG,C.CHOW,M.LILLO,D.E.CANE, AUTHOR 2 J.P.NOEL REVDAT 7 07-FEB-24 1I52 1 REMARK LINK REVDAT 6 31-JAN-18 1I52 1 REMARK REVDAT 5 16-NOV-11 1I52 1 HETATM REVDAT 4 13-JUL-11 1I52 1 VERSN REVDAT 3 24-FEB-09 1I52 1 VERSN REVDAT 2 01-APR-03 1I52 1 JRNL REVDAT 1 11-JUL-01 1I52 0 JRNL AUTH S.B.RICHARD,M.E.BOWMAN,W.KWIATKOWSKI,I.KANG,C.CHOW, JRNL AUTH 2 A.M.LILLO,D.E.CANE,J.P.NOEL JRNL TITL STRUCTURE OF 4-DIPHOSPHOCYTIDYL-2-C- METHYLERYTHRITOL JRNL TITL 2 SYNTHETASE INVOLVED IN MEVALONATE- INDEPENDENT ISOPRENOID JRNL TITL 3 BIOSYNTHESIS. JRNL REF NAT.STRUCT.BIOL. V. 8 641 2001 JRNL REFN ISSN 1072-8368 JRNL PMID 11427897 JRNL DOI 10.1038/89691 REMARK 2 REMARK 2 RESOLUTION. 1.50 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) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 65.14 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1102364.680 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 92.5 REMARK 3 NUMBER OF REFLECTIONS : 34414 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) : 0.227 REMARK 3 FREE R VALUE : 0.247 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1732 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.006 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) : 1.50 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.59 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 73.70 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4324 REMARK 3 BIN R VALUE (WORKING SET) : 0.3090 REMARK 3 BIN FREE R VALUE : 0.3530 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.90 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 225 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.024 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1718 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 31 REMARK 3 SOLVENT ATOMS : 328 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 22.20 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 26.90 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -7.19000 REMARK 3 B22 (A**2) : 7.92000 REMARK 3 B33 (A**2) : -0.73000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -0.15000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.21 REMARK 3 ESD FROM SIGMAA (A) : 0.19 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) : 0.24 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.21 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.600 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.50 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.000 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) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.37 REMARK 3 BSOL : 46.21 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: USED MAXIMUM LIKELIHOOD TARGET USING REMARK 3 AMPLITUDES REMARK 4 REMARK 4 1I52 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 27-FEB-01. REMARK 100 THE DEPOSITION ID IS D_1000012913. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-APR-00 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 : SSRL REMARK 200 BEAMLINE : BL7-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.08 REMARK 200 MONOCHROMATOR : CYCLINDRICALLY BENT TRIANGULAR REMARK 200 SI(111) ASYMMETRIC CUT, REMARK 200 HORIZONTAL FOCUS REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 68287 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 90.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.4 REMARK 200 DATA REDUNDANCY : 2.300 REMARK 200 R MERGE (I) : 0.03600 REMARK 200 R SYM (I) : 3.60000 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 22.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.53 REMARK 200 COMPLETENESS FOR SHELL (%) : 73.3 REMARK 200 DATA REDUNDANCY IN SHELL : 2.01 REMARK 200 R MERGE FOR SHELL (I) : 0.28200 REMARK 200 R SYM FOR SHELL (I) : 28.2000 REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.750 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR REMARK 200 SOFTWARE USED: SHARP REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.71 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.27 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, CALCIUM ACETATE, MAGNESIUM REMARK 280 CHLORIDE, DTT, PH 7.5, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 42.8K, TEMPERATURE 315.8K 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 65.28200 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 23.53700 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 65.28200 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 23.53700 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 300 REMARK: THE SECOND MONOMER OF THE BIOLOGICAL ASSEMBLY (DIMER) IS REMARK 300 GENERATED BY THE TWO FOLD AXIS: -X,Y,-Z 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: DIMERIC 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 128.05191 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 38.02210 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 A2246 LIES ON A SPECIAL POSITION. REMARK 375 HOH A2255 LIES ON A SPECIAL POSITION. 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 MET A 1 REMARK 465 ALA A 2 REMARK 465 THR A 3 REMARK 465 THR A 4 REMARK 465 THR A 230 REMARK 465 ILE A 231 REMARK 465 HIS A 232 REMARK 465 GLN A 233 REMARK 465 GLU A 234 REMARK 465 ASN A 235 REMARK 465 THR A 236 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 GLN A 22 CG CD OE1 NE2 REMARK 470 THR A 228 OG1 CG2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O HOH A 2035 O HOH A 2247 2.06 REMARK 500 O HOH A 2222 O HOH A 2262 2.11 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O HOH A 2328 O HOH A 2328 2656 1.88 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 ALA A 14 38.81 -142.17 REMARK 500 GLN A 22 -18.19 78.77 REMARK 500 ASN A 34 22.24 -150.00 REMARK 500 ASP A 62 105.87 -46.74 REMARK 500 ASN A 149 48.46 -91.24 REMARK 500 THR A 189 -79.46 -109.18 REMARK 500 THR A 228 160.58 158.66 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 A2001 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 LEU A 46 O REMARK 620 2 GLU A 172 OE1 146.6 REMARK 620 3 GLU A 172 OE2 160.3 53.2 REMARK 620 4 HOH A2005 O 96.1 74.9 90.5 REMARK 620 5 HOH A2126 O 86.0 106.7 85.5 173.2 REMARK 620 6 HOH A2128 O 74.9 76.4 121.4 104.6 82.2 REMARK 620 7 HOH A2132 O 81.9 127.7 80.3 84.0 89.9 155.9 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A2002 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CTP A1001 O2A REMARK 620 2 CTP A1001 O3G 99.2 REMARK 620 3 CTP A1001 O3A 58.7 93.6 REMARK 620 4 HOH A2129 O 72.9 171.5 79.7 REMARK 620 5 HOH A2219 O 146.2 92.2 152.5 96.2 REMARK 620 6 HOH A2220 O 77.3 94.8 136.0 86.6 70.1 REMARK 620 7 HOH A2251 O 148.0 91.4 90.8 93.9 62.2 132.0 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 CA A 2001 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 2002 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CTP A 1001 DBREF 1I52 A 1 236 UNP Q46893 ISPD_ECOLI 1 236 SEQRES 1 A 236 MET ALA THR THR HIS LEU ASP VAL CYS ALA VAL VAL PRO SEQRES 2 A 236 ALA ALA GLY PHE GLY ARG ARG MET GLN THR GLU CYS PRO SEQRES 3 A 236 LYS GLN TYR LEU SER ILE GLY ASN GLN THR ILE LEU GLU SEQRES 4 A 236 HIS SER VAL HIS ALA LEU LEU ALA HIS PRO ARG VAL LYS SEQRES 5 A 236 ARG VAL VAL ILE ALA ILE SER PRO GLY ASP SER ARG PHE SEQRES 6 A 236 ALA GLN LEU PRO LEU ALA ASN HIS PRO GLN ILE THR VAL SEQRES 7 A 236 VAL ASP GLY GLY ASP GLU ARG ALA ASP SER VAL LEU ALA SEQRES 8 A 236 GLY LEU LYS ALA ALA GLY ASP ALA GLN TRP VAL LEU VAL SEQRES 9 A 236 HIS ASP ALA ALA ARG PRO CYS LEU HIS GLN ASP ASP LEU SEQRES 10 A 236 ALA ARG LEU LEU ALA LEU SER GLU THR SER ARG THR GLY SEQRES 11 A 236 GLY ILE LEU ALA ALA PRO VAL ARG ASP THR MET LYS ARG SEQRES 12 A 236 ALA GLU PRO GLY LYS ASN ALA ILE ALA HIS THR VAL ASP SEQRES 13 A 236 ARG ASN GLY LEU TRP HIS ALA LEU THR PRO GLN PHE PHE SEQRES 14 A 236 PRO ARG GLU LEU LEU HIS ASP CYS LEU THR ARG ALA LEU SEQRES 15 A 236 ASN GLU GLY ALA THR ILE THR ASP GLU ALA SER ALA LEU SEQRES 16 A 236 GLU TYR CYS GLY PHE HIS PRO GLN LEU VAL GLU GLY ARG SEQRES 17 A 236 ALA ASP ASN ILE LYS VAL THR ARG PRO GLU ASP LEU ALA SEQRES 18 A 236 LEU ALA GLU PHE TYR LEU THR ARG THR ILE HIS GLN GLU SEQRES 19 A 236 ASN THR HET CA A2001 1 HET MG A2002 1 HET CTP A1001 29 HETNAM CA CALCIUM ION HETNAM MG MAGNESIUM ION HETNAM CTP CYTIDINE-5'-TRIPHOSPHATE FORMUL 2 CA CA 2+ FORMUL 3 MG MG 2+ FORMUL 4 CTP C9 H16 N3 O14 P3 FORMUL 5 HOH *328(H2 O) HELIX 1 1 GLY A 18 GLN A 22 5 5 HELIX 2 2 PRO A 26 TYR A 29 5 4 HELIX 3 3 ILE A 37 ALA A 47 1 11 HELIX 4 4 ARG A 64 LEU A 68 5 5 HELIX 5 5 LEU A 68 HIS A 73 5 6 HELIX 6 6 GLU A 84 ALA A 95 1 12 HELIX 7 7 HIS A 113 ALA A 122 1 10 HELIX 8 8 LEU A 123 THR A 126 5 4 HELIX 9 9 ARG A 171 GLU A 184 1 14 HELIX 10 10 ASP A 190 CYS A 198 1 9 HELIX 11 11 GLU A 218 THR A 228 1 11 SHEET 1 A 7 ILE A 76 ASP A 80 0 SHEET 2 A 7 VAL A 51 ILE A 58 1 O VAL A 54 N THR A 77 SHEET 3 A 7 VAL A 8 ALA A 14 1 O VAL A 8 N LYS A 52 SHEET 4 A 7 TRP A 101 VAL A 104 1 O TRP A 101 N CYS A 9 SHEET 5 A 7 TRP A 161 PRO A 170 -1 O GLN A 167 N VAL A 104 SHEET 6 A 7 GLY A 131 PRO A 136 -1 O GLY A 131 N PHE A 168 SHEET 7 A 7 GLN A 203 GLU A 206 1 O GLN A 203 N ILE A 132 SHEET 1 B 2 SER A 31 ILE A 32 0 SHEET 2 B 2 GLN A 35 THR A 36 -1 O GLN A 35 N ILE A 32 SHEET 1 C 2 MET A 141 ALA A 144 0 SHEET 2 C 2 ILE A 151 VAL A 155 -1 N ALA A 152 O ARG A 143 LINK O LEU A 46 CA CA A2001 1555 1555 2.34 LINK OE1 GLU A 172 CA CA A2001 4556 1555 2.55 LINK OE2 GLU A 172 CA CA A2001 4556 1555 2.25 LINK O2A CTP A1001 MG MG A2002 1555 1555 2.91 LINK O3G CTP A1001 MG MG A2002 1555 1555 2.27 LINK O3A CTP A1001 MG MG A2002 1555 1555 2.38 LINK CA CA A2001 O HOH A2005 1555 1555 2.31 LINK CA CA A2001 O HOH A2126 1555 1555 2.36 LINK CA CA A2001 O HOH A2128 1555 1555 2.43 LINK CA CA A2001 O HOH A2132 1555 1555 2.35 LINK MG MG A2002 O HOH A2129 1555 1555 2.48 LINK MG MG A2002 O HOH A2219 1555 1555 2.18 LINK MG MG A2002 O HOH A2220 1555 1555 2.39 LINK MG MG A2002 O HOH A2251 1555 1555 2.77 CISPEP 1 THR A 165 PRO A 166 0 -0.18 SITE 1 AC1 6 LEU A 46 GLU A 172 HOH A2005 HOH A2126 SITE 2 AC1 6 HOH A2128 HOH A2132 SITE 1 AC2 5 CTP A1001 HOH A2129 HOH A2219 HOH A2220 SITE 2 AC2 5 HOH A2251 SITE 1 AC3 25 PRO A 13 ALA A 14 ALA A 15 GLY A 16 SITE 2 AC3 25 PHE A 17 GLY A 18 ARG A 19 ARG A 20 SITE 3 AC3 25 LYS A 27 GLY A 82 ASP A 83 GLU A 84 SITE 4 AC3 25 ARG A 85 SER A 88 ASP A 106 ALA A 107 SITE 5 AC3 25 ALA A 108 MG A2002 HOH A2032 HOH A2143 SITE 6 AC3 25 HOH A2165 HOH A2170 HOH A2248 HOH A2251 SITE 7 AC3 25 HOH A2316 CRYST1 130.564 47.074 38.105 90.00 93.78 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 0.007659 0.000000 0.000507 0.00000 SCALE2 0.000000 0.021243 0.000000 0.00000 SCALE3 0.000000 0.000000 0.026301 0.00000