HEADER METHYLTRANSFERASE 02-DEC-96 1TSN TITLE THYMIDYLATE SYNTHASE TERNARY COMPLEX WITH FDUMP AND TITLE 2 METHYLENETETRAHYDROFOLATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: THYMIDYLATE SYNTHASE; COMPND 3 CHAIN: A; COMPND 4 EC: 2.1.1.45; COMPND 5 ENGINEERED: YES; COMPND 6 OTHER_DETAILS: TERNARY COMPLEX WITH FDUMP (INHIBITOR) AND COMPND 7 METHYLENETETRAHYDROFOLATE (COFACTOR) SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562 KEYWDS TRANSFERASE, METHYLTRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR D.C.HYATT,F.MALEY,W.R.MONTFORT REVDAT 7 06-NOV-24 1TSN 1 REMARK REVDAT 6 03-APR-24 1TSN 1 REMARK LINK ATOM REVDAT 5 18-APR-18 1TSN 1 REMARK REVDAT 4 13-JUL-11 1TSN 1 VERSN REVDAT 3 24-FEB-09 1TSN 1 VERSN REVDAT 2 01-APR-03 1TSN 1 JRNL REVDAT 1 07-JUL-97 1TSN 0 JRNL AUTH D.C.HYATT,F.MALEY,W.R.MONTFORT JRNL TITL USE OF STRAIN IN A STEREOSPECIFIC CATALYTIC MECHANISM: JRNL TITL 2 CRYSTAL STRUCTURES OF ESCHERICHIA COLI THYMIDYLATE SYNTHASE JRNL TITL 3 BOUND TO FDUMP AND METHYLENETETRAHYDROFOLATE. JRNL REF BIOCHEMISTRY V. 36 4585 1997 JRNL REFN ISSN 0006-2960 JRNL PMID 9109668 JRNL DOI 10.1021/BI962936J REMARK 2 REMARK 2 RESOLUTION. 2.20 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : GPRLSA REMARK 3 AUTHORS : FUREY REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 9.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.0 REMARK 3 NUMBER OF REFLECTIONS : 18104 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.178 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.1780 REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 18104 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2153 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 59 REMARK 3 SOLVENT ATOMS : 110 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 21.00 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.019 ; 0.020 REMARK 3 ANGLE DISTANCE (A) : 0.050 ; 0.035 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.041 ; 0.035 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.016 ; 0.020 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.223 ; 0.200 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.210 ; 0.300 REMARK 3 MULTIPLE TORSION (A) : 0.214 ; 0.300 REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : 0.000 ; 10.000 REMARK 3 PLANAR (DEGREES) : 3.500 ; 5.000 REMARK 3 STAGGERED (DEGREES) : 17.200; 15.000 REMARK 3 TRANSVERSE (DEGREES) : 29.300; 15.000 REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.603 ; 1.750 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.417 ; 2.500 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.278 ; 1.750 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.654 ; 2.500 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1TSN COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000176836. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : MAY-96 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : ENRAF-NONIUS FR571 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : DIFFRACTOMETER REMARK 200 DETECTOR MANUFACTURER : ENRAF-NONIUS FAST REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MADNES REMARK 200 DATA SCALING SOFTWARE : PROCOR REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 18104 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 REMARK 200 RESOLUTION RANGE LOW (A) : 9.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.4 REMARK 200 DATA REDUNDANCY : 4.100 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.09500 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 6.4000 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) : 2.29 REMARK 200 COMPLETENESS FOR SHELL (%) : 98.5 REMARK 200 DATA REDUNDANCY IN SHELL : 3.40 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.35500 REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: GPRLSA REMARK 200 STARTING MODEL: TS.FDUMP.CB3717 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 56.52 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.83 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALLIZED BY VAPOR DIFFUSION FROM A REMARK 280 SOLUTION OF 8MG/ML PROTEIN, 2MM FDUMP, 10MM CH2THF, 20MM REMARK 280 PHOSPHATE PH 8.0, 4MM DTT, AND 1.05M AMMONIUM SULFATE; REMARK 280 EQUILIBRATED AGAINST A SOLUTION OF 2.10M AMMONIUM SULFATE, 20MM REMARK 280 PHOSPHATE PH 8.0, AND 4MM DTT., VAPOR DIFFUSION REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -X,-X+Y,-Z+1/3 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 38.42333 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 76.84667 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 76.84667 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 38.42333 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 8240 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 19070 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -36.0 KCAL/MOL 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 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 76.84667 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 A 332 LIES ON A SPECIAL POSITION. 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 OE2 C2F A 266 O HOH A 270 2.13 REMARK 500 SG CYS A 146 C6 UFP A 265 2.17 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 296 O HOH A 296 5555 0.51 REMARK 500 O HOH A 296 O HOH A 341 5555 2.11 REMARK 500 REMARK 500 REMARK: NULL 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 ASP A 13 CB - CG - OD2 ANGL. DEV. = -10.0 DEGREES REMARK 500 SER A 28 N - CA - CB ANGL. DEV. = -9.1 DEGREES REMARK 500 ASP A 40 CB - CG - OD1 ANGL. DEV. = 6.2 DEGREES REMARK 500 TYR A 71 CB - CG - CD2 ANGL. DEV. = 3.9 DEGREES REMARK 500 TYR A 71 CB - CG - CD1 ANGL. DEV. = -4.4 DEGREES REMARK 500 ASP A 89 CB - CG - OD2 ANGL. DEV. = 5.7 DEGREES REMARK 500 THR A 113 CA - CB - CG2 ANGL. DEV. = 8.5 DEGREES REMARK 500 ARG A 126 NE - CZ - NH2 ANGL. DEV. = -3.2 DEGREES REMARK 500 ARG A 127 NE - CZ - NH1 ANGL. DEV. = -6.7 DEGREES REMARK 500 ARG A 127 NE - CZ - NH2 ANGL. DEV. = 10.1 DEGREES REMARK 500 ASP A 139 CB - CG - OD2 ANGL. DEV. = -5.7 DEGREES REMARK 500 ALA A 155 N - CA - CB ANGL. DEV. = 9.6 DEGREES REMARK 500 GLU A 195 CG - CD - OE1 ANGL. DEV. = -14.5 DEGREES REMARK 500 ASP A 198 CB - CG - OD1 ANGL. DEV. = 11.4 DEGREES REMARK 500 ASP A 198 O - C - N ANGL. DEV. = 9.7 DEGREES REMARK 500 ASP A 205 CB - CG - OD2 ANGL. DEV. = 11.4 DEGREES REMARK 500 ASP A 214 CB - CG - OD2 ANGL. DEV. = -6.4 DEGREES REMARK 500 ARG A 234 NE - CZ - NH1 ANGL. DEV. = 5.0 DEGREES REMARK 500 ARG A 243 NE - CZ - NH1 ANGL. DEV. = 3.0 DEGREES REMARK 500 ASP A 253 CB - CG - OD1 ANGL. DEV. = 7.1 DEGREES REMARK 500 ASP A 253 CB - CG - OD2 ANGL. DEV. = -8.2 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 ASP A 85 -169.84 -75.67 REMARK 500 TYR A 94 -70.81 -21.20 REMARK 500 ALA A 100 65.64 -156.37 REMARK 500 ASP A 122 64.93 -151.79 REMARK 500 PHE A 149 131.18 -170.83 REMARK 500 ASN A 211 36.00 -94.39 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: S1 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CARBOXY MODIFICATION AT N1 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 267 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UFP A 265 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE C2F A 266 DBREF 1TSN A 2 264 UNP P00470 TYSY_ECOLI 2 264 SEQRES 1 A 264 CXM LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU ASP SEQRES 2 A 264 GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY THR SEQRES 3 A 264 LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU GLN SEQRES 4 A 264 ASP GLY PHE PRO LEU VAL THR THR LYS ARG CYS HIS LEU SEQRES 5 A 264 ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN GLY SEQRES 6 A 264 ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL THR SEQRES 7 A 264 ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU GLY SEQRES 8 A 264 PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR PRO SEQRES 9 A 264 ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU ASN SEQRES 10 A 264 GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE VAL SEQRES 11 A 264 SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA LEU SEQRES 12 A 264 ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA ASP SEQRES 13 A 264 GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS ASP SEQRES 14 A 264 VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR ALA SEQRES 15 A 264 LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU GLU SEQRES 16 A 264 VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS LEU SEQRES 17 A 264 TYR SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SER SEQRES 18 A 264 ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS ARG SEQRES 19 A 264 LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP PHE SEQRES 20 A 264 GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS ALA SEQRES 21 A 264 PRO VAL ALA ILE MODRES 1TSN CXM A 1 MET N-CARBOXYMETHIONINE HET CXM A 1 11 HET PO4 A 267 5 HET UFP A 265 21 HET C2F A 266 33 HETNAM CXM N-CARBOXYMETHIONINE HETNAM PO4 PHOSPHATE ION HETNAM UFP 5-FLUORO-2'-DEOXYURIDINE-5'-MONOPHOSPHATE HETNAM C2F 5-METHYL-5,6,7,8-TETRAHYDROFOLIC ACID FORMUL 1 CXM C6 H11 N O4 S FORMUL 2 PO4 O4 P 3- FORMUL 3 UFP C9 H12 F N2 O8 P FORMUL 4 C2F C20 H25 N7 O6 FORMUL 5 HOH *110(H2 O) HELIX 1 1 LYS A 2 GLU A 14 1 13 HELIX 2 2 LEU A 38 ASP A 40 5 3 HELIX 3 3 LEU A 52 GLN A 64 1 13 HELIX 4 4 ALA A 70 ASN A 75 1 6 HELIX 5 5 ASP A 81 TRP A 83 5 3 HELIX 6 6 TYR A 94 ALA A 100 1 7 HELIX 7 7 GLN A 111 ASN A 121 1 11 HELIX 8 8 LEU A 138 LYS A 140 5 3 HELIX 9 9 GLY A 173 GLN A 191 1 19 HELIX 10 10 SER A 210 SER A 221 5 12 HELIX 11 11 ILE A 239 ASP A 241 5 3 HELIX 12 12 PHE A 244 ASP A 246 5 3 SHEET 1 A 4 THR A 16 LYS A 18 0 SHEET 2 A 4 THR A 26 PHE A 30 -1 N SER A 28 O THR A 16 SHEET 3 A 4 ASP A 205 TYR A 209 -1 N LEU A 208 O LEU A 27 SHEET 4 A 4 SER A 167 ASP A 169 1 N CYS A 168 O ASP A 205 SHEET 1 B 5 HIS A 32 ASN A 37 0 SHEET 2 B 5 ASP A 198 GLY A 203 -1 N GLY A 203 O HIS A 32 SHEET 3 B 5 LYS A 158 GLN A 165 1 N CYS A 161 O VAL A 200 SHEET 4 B 5 HIS A 147 ALA A 155 -1 N ALA A 155 O LYS A 158 SHEET 5 B 5 ILE A 129 SER A 131 -1 N VAL A 130 O PHE A 150 SHEET 1 C 2 LYS A 229 ILE A 232 0 SHEET 2 C 2 PHE A 247 GLU A 250 -1 N GLU A 250 O LYS A 229 LINK C CXM A 1 N LYS A 2 1555 1555 1.32 LINK C5 UFP A 265 C11 C2F A 266 1555 1555 1.48 LINK F5 UFP A 265 C11 C2F A 266 1555 1555 2.30 SITE 1 S1 1 CXM A 1 SITE 1 AC1 4 ARG A 49 LYS A 120 PRO A 256 GLY A 257 SITE 1 AC2 16 ARG A 21 TYR A 94 ARG A 126 ARG A 127 SITE 2 AC2 16 CYS A 146 HIS A 147 GLN A 165 ARG A 166 SITE 3 AC2 16 SER A 167 CYS A 168 ASP A 169 ASN A 177 SITE 4 AC2 16 HIS A 207 TYR A 209 C2F A 266 HOH A 345 SITE 1 AC3 19 SER A 54 ILE A 79 TRP A 80 TRP A 83 SITE 2 AC3 19 LEU A 143 ASP A 169 GLY A 173 PHE A 176 SITE 3 AC3 19 ALA A 263 UFP A 265 HOH A 270 HOH A 273 SITE 4 AC3 19 HOH A 287 HOH A 291 HOH A 310 HOH A 334 SITE 5 AC3 19 HOH A 350 HOH A 367 HOH A 379 CRYST1 72.100 72.100 115.270 90.00 90.00 120.00 P 31 2 1 6 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 0.013870 0.008008 0.000000 0.00000 SCALE2 0.000000 0.016015 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008675 0.00000 HETATM 1 N CXM A 1 59.805 -16.146 30.929 1.00 18.41 N HETATM 2 CA CXM A 1 60.162 -14.872 30.376 1.00 19.04 C HETATM 3 CB CXM A 1 58.911 -14.031 30.131 1.00 20.86 C HETATM 4 CG CXM A 1 58.163 -14.490 28.937 1.00 21.21 C HETATM 5 SD CXM A 1 56.717 -13.455 28.721 1.00 22.19 S HETATM 6 CE CXM A 1 55.693 -13.733 30.154 1.00 19.73 C HETATM 7 C CXM A 1 60.926 -14.142 31.505 1.00 19.72 C HETATM 8 O CXM A 1 60.597 -14.385 32.677 1.00 20.41 O HETATM 9 CN CXM A 1 59.672 -17.263 30.242 1.00 19.35 C HETATM 10 ON1 CXM A 1 59.898 -17.224 29.016 1.00 18.58 O HETATM 11 ON2 CXM A 1 59.272 -18.276 30.909 1.00 19.05 O