HEADER TRANSFERASE 22-OCT-96 1KCE TITLE E. COLI THYMIDYLATE SYNTHASE MUTANT E58Q IN COMPLEX WITH CB3717 AND TITLE 2 2'-DEOXYURIDINE 5'-MONOPHOSPHATE (DUMP) COMPND MOL_ID: 1; COMPND 2 MOLECULE: THYMIDYLATE SYNTHASE; COMPND 3 CHAIN: A, B; COMPND 4 EC: 2.1.1.45; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 CELL_LINE: X2913; SOURCE 5 GENE: THYA; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PTHYA-WT; SOURCE 9 EXPRESSION_SYSTEM_GENE: THYA KEYWDS TRANSFERASE, REACTION INTERMEDIATE EXPDTA X-RAY DIFFRACTION AUTHOR C.R.SAGE,E.E.RUTENBER,T.J.STOUT,R.M.STROUD REVDAT 6 16-OCT-24 1KCE 1 REMARK REVDAT 5 05-JUN-24 1KCE 1 REMARK LINK REVDAT 4 13-JUL-11 1KCE 1 VERSN REVDAT 3 24-FEB-09 1KCE 1 VERSN REVDAT 2 01-APR-03 1KCE 1 JRNL REVDAT 1 21-APR-97 1KCE 0 JRNL AUTH C.R.SAGE,E.E.RUTENBER,T.J.STOUT,R.M.STROUD JRNL TITL AN ESSENTIAL ROLE FOR WATER IN AN ENZYME REACTION MECHANISM: JRNL TITL 2 THE CRYSTAL STRUCTURE OF THE THYMIDYLATE SYNTHASE MUTANT JRNL TITL 3 E58Q. JRNL REF BIOCHEMISTRY V. 35 16270 1996 JRNL REFN ISSN 0006-2960 JRNL PMID 8973201 JRNL DOI 10.1021/BI961269R REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.R.MONTFORT,K.M.PERRY,E.B.FAUMAN,J.S.FINER-MOORE,G.F.MALEY, REMARK 1 AUTH 2 L.HARDY,F.MALEY,R.M.STROUD REMARK 1 TITL STRUCTURE, MULTIPLE SITE BINDING, AND SEGMENTAL REMARK 1 TITL 2 ACCOMMODATION IN THYMIDYLATE SYNTHASE ON BINDING DUMP AND AN REMARK 1 TITL 3 ANTI-FOLATE REMARK 1 REF BIOCHEMISTRY V. 29 6964 1990 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 2 REMARK 1 AUTH W.R.MONTFORT,K.M.PERRY,E.B.FAUMAN,J.S.FINER-MOORE,G.F.MALEY, REMARK 1 AUTH 2 L.HARDY,F.MALEY,R.M.STROUD REMARK 1 TITL ERRATUM. STRUCTURE, MULTIPLE SITE BINDING, AND SEGMENTAL REMARK 1 TITL 2 ACCOMMODATION IN THYMIDYLATE SYNTHASE ON BINDING DUMP AND AN REMARK 1 TITL 3 ANTI-FOLATE REMARK 1 REF BIOCHEMISTRY V. 29 10864 1990 REMARK 1 REFN ISSN 0006-2960 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 7.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 80.8 REMARK 3 NUMBER OF REFLECTIONS : 37807 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) : 0.172 REMARK 3 FREE R VALUE : 0.222 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.100 REMARK 3 FREE R VALUE TEST SET COUNT : 3590 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.12 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 66.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4105 REMARK 3 BIN R VALUE (WORKING SET) : 0.2840 REMARK 3 BIN FREE R VALUE : 0.3360 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 10.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 468 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.016 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 4306 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 110 REMARK 3 SOLVENT ATOMS : 241 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 20.50 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 21.60 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) : 0.31 REMARK 3 ESD FROM SIGMAA (A) : 0.26 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) : 0.34 REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.014 REMARK 3 BOND ANGLES (DEGREES) : 2.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 2.080 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 2.360 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 3.360 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.240 ; 1.500 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 4.740 ; 2.000 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 : SAGEWT_PARHCSDX.PRO REMARK 3 PARAMETER FILE 2 : SAGEWT_PARAM11.WAT REMARK 3 PARAMETER FILE 3 : SAGEWT_PARAMED.LIG REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 PARAMETER FILE 6 : NULL REMARK 3 TOPOLOGY FILE 1 : SAGEWT_TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : SAGEWT_TOPH11.WAT REMARK 3 TOPOLOGY FILE 3 : SAGEWT_TOPO_COV.DUMP REMARK 3 TOPOLOGY FILE 4 : SAGEWT_TOPO.CB3 REMARK 3 TOPOLOGY FILE 5 : SAGEWT_TOPO.FORMIC REMARK 3 TOPOLOGY FILE 6 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1KCE 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_1000174404. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 09-JAN-95 REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 37807 REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.0 REMARK 200 DATA REDUNDANCY : 3.100 REMARK 200 R MERGE (I) : 0.09700 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR 3.1 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 52.40 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.57 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/2 REMARK 290 6555 X-Y,X,Z+1/2 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 0.00000 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 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 33.80000 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 33.80000 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 33.80000 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 REMARK 350 TOTAL BURIED SURFACE AREA: 8010 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 18960 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -20.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 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 CE1 HIS B 51 OG SER B 54 1.58 REMARK 500 NE2 HIS A 51 CB ARG A 53 1.76 REMARK 500 NE2 HIS B 51 OG SER B 54 1.97 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 903 O HOH B 906 2655 0.27 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 PRO A 92 60.49 -69.20 REMARK 500 VAL A 93 -157.79 -80.37 REMARK 500 ALA A 100 63.20 -153.60 REMARK 500 ASP A 122 57.36 -149.27 REMARK 500 VAL B 93 -166.41 -78.98 REMARK 500 TYR B 94 -60.42 -26.58 REMARK 500 ALA B 100 65.17 -150.86 REMARK 500 ASP B 122 63.07 -152.07 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 ARG A 243 0.28 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UMP A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CB3 A 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UMP B 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CB3 B 300 DBREF 1KCE A 2 264 UNP P0A884 TYSY_ECOLI 2 264 DBREF 1KCE B 2 264 UNP P0A884 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 SEQRES 1 B 264 CXM LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU ASP SEQRES 2 B 264 GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY THR SEQRES 3 B 264 LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU GLN SEQRES 4 B 264 ASP GLY PHE PRO LEU VAL THR THR LYS ARG CYS HIS LEU SEQRES 5 B 264 ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN GLY SEQRES 6 B 264 ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL THR SEQRES 7 B 264 ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU GLY SEQRES 8 B 264 PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR PRO SEQRES 9 B 264 ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU ASN SEQRES 10 B 264 GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE VAL SEQRES 11 B 264 SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA LEU SEQRES 12 B 264 ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA ASP SEQRES 13 B 264 GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS ASP SEQRES 14 B 264 VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR ALA SEQRES 15 B 264 LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU GLU SEQRES 16 B 264 VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS LEU SEQRES 17 B 264 TYR SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SER SEQRES 18 B 264 ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS ARG SEQRES 19 B 264 LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP PHE SEQRES 20 B 264 GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS ALA SEQRES 21 B 264 PRO VAL ALA ILE MODRES 1KCE CXM A 1 MET N-CARBOXYMETHIONINE MODRES 1KCE CXM B 1 MET N-CARBOXYMETHIONINE HET CXM A 1 11 HET CXM B 1 11 HET UMP A 301 20 HET CB3 A 300 35 HET UMP B 301 20 HET CB3 B 300 35 HETNAM CXM N-CARBOXYMETHIONINE HETNAM UMP 2'-DEOXYURIDINE 5'-MONOPHOSPHATE HETNAM CB3 10-PROPARGYL-5,8-DIDEAZAFOLIC ACID HETSYN UMP DUMP FORMUL 1 CXM 2(C6 H11 N O4 S) FORMUL 3 UMP 2(C9 H13 N2 O8 P) FORMUL 4 CB3 2(C24 H23 N5 O6) FORMUL 7 HOH *241(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 VAL A 135 LYS A 140 5 6 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 HELIX 13 13 LYS B 2 GLU B 14 1 13 HELIX 14 14 LEU B 38 ASP B 40 5 3 HELIX 15 15 LEU B 52 GLN B 64 1 13 HELIX 16 16 ALA B 70 ASN B 75 1 6 HELIX 17 17 ASP B 81 TRP B 83 5 3 HELIX 18 18 TYR B 94 ALA B 100 1 7 HELIX 19 19 GLN B 111 ASN B 121 1 11 HELIX 20 20 VAL B 135 LYS B 140 5 6 HELIX 21 21 GLY B 173 GLN B 191 1 19 HELIX 22 22 SER B 210 SER B 221 5 12 HELIX 23 23 ILE B 239 ASP B 241 5 3 HELIX 24 24 PHE B 244 ASP B 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 SHEET 1 D 4 THR B 16 LYS B 18 0 SHEET 2 D 4 THR B 26 PHE B 30 -1 N SER B 28 O THR B 16 SHEET 3 D 4 ASP B 205 TYR B 209 -1 N LEU B 208 O LEU B 27 SHEET 4 D 4 SER B 167 ASP B 169 1 N CYS B 168 O ASP B 205 SHEET 1 E 5 HIS B 32 ASN B 37 0 SHEET 2 E 5 ASP B 198 GLY B 203 -1 N GLY B 203 O HIS B 32 SHEET 3 E 5 LYS B 158 GLN B 165 1 N CYS B 161 O VAL B 200 SHEET 4 E 5 HIS B 147 ALA B 155 -1 N ALA B 155 O LYS B 158 SHEET 5 E 5 ILE B 129 SER B 131 -1 N VAL B 130 O PHE B 150 SHEET 1 F 2 LYS B 229 ILE B 232 0 SHEET 2 F 2 PHE B 247 GLU B 250 -1 N GLU B 250 O LYS B 229 LINK C CXM A 1 N LYS A 2 1555 1555 1.33 LINK SG CYS A 146 C6 UMP A 301 1555 1555 1.83 LINK C CXM B 1 N LYS B 2 1555 1555 1.33 LINK SG CYS B 146 C6 UMP B 301 1555 1555 1.86 SITE 1 AC1 15 ARG A 21 CYS A 146 HIS A 147 GLN A 165 SITE 2 AC1 15 ARG A 166 SER A 167 ASP A 169 ASN A 177 SITE 3 AC1 15 HIS A 207 TYR A 209 CB3 A 300 HOH A 605 SITE 4 AC1 15 HOH A 653 ARG B 126 ARG B 127 SITE 1 AC2 22 GLU A 58 ILE A 79 TRP A 80 TRP A 83 SITE 2 AC2 22 LEU A 143 ASP A 169 LEU A 172 GLY A 173 SITE 3 AC2 22 PHE A 176 ASN A 177 TYR A 209 LYS A 259 SITE 4 AC2 22 ALA A 263 UMP A 301 HOH A 606 HOH A 658 SITE 5 AC2 22 HOH A 659 HOH A 671 HOH A 673 HOH A 677 SITE 6 AC2 22 HOH A 685 HOH A 901 SITE 1 AC3 16 ARG A 126 ARG A 127 HOH A 785 ARG B 21 SITE 2 AC3 16 CYS B 146 HIS B 147 GLN B 165 ARG B 166 SITE 3 AC3 16 SER B 167 CYS B 168 ASP B 169 ASN B 177 SITE 4 AC3 16 HIS B 207 TYR B 209 CB3 B 300 HOH B 732 SITE 1 AC4 18 HIS B 51 GLU B 58 ILE B 79 TRP B 80 SITE 2 AC4 18 TRP B 83 LEU B 143 ASP B 169 GLY B 173 SITE 3 AC4 18 PHE B 176 TYR B 209 VAL B 262 ALA B 263 SITE 4 AC4 18 UMP B 301 HOH B 733 HOH B 797 HOH B 802 SITE 5 AC4 18 HOH B 821 HOH B 902 CRYST1 126.800 126.800 67.600 90.00 90.00 120.00 P 63 12 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 0.007886 0.004553 0.000000 0.00000 SCALE2 0.000000 0.009106 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014793 0.00000 HETATM 1 N CXM A 1 22.010 20.015 49.419 1.00 14.06 N HETATM 2 CA CXM A 1 23.363 20.512 49.668 1.00 19.23 C HETATM 3 CB CXM A 1 24.294 20.196 48.497 1.00 18.43 C HETATM 4 CG CXM A 1 24.485 18.734 48.219 1.00 20.16 C HETATM 5 SD CXM A 1 25.595 18.509 46.834 1.00 20.37 S HETATM 6 CE CXM A 1 24.536 18.844 45.490 1.00 14.01 C HETATM 7 C CXM A 1 23.317 22.012 49.825 1.00 18.74 C HETATM 8 O CXM A 1 22.530 22.690 49.161 1.00 21.27 O HETATM 9 CN CXM A 1 21.508 18.984 50.086 1.00 15.31 C HETATM 10 ON1 CXM A 1 20.433 18.825 49.476 1.00 18.98 O HETATM 11 ON2 CXM A 1 22.164 18.017 50.522 1.00 18.95 O