Structure of PDB 2kce Chain B Binding Site BS03

Receptor Information
>2kce Chain B (length=264) Species: 562 (Escherichia coli) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
MKQYLELMQKVLDEGTQKNDRTGTGTLSIFGHQMRFNLQDGFPLVTTKRC
HLRSIIHELLWFLQGDTNIAYLHENNVTIWDEWADENGDLGPVYGKQWRA
WPTPDGRHIDQITTVLNQLKNDPDSRRIIVSAWNVGELDKMALAPCHAFF
QFYVADGKLSCQLYQRSCDVFLGLPFNIASYALLVHMMAQQCDLEVGDFV
WTGGDTHLYSNHMDQTHLQLSREPRPLPKLIIKRKPESIFDYRFEDFEIE
GYDPHPGIKAPVAI
Ligand information
Ligand IDD16
InChIInChI=1S/C21H22N4O6S/c1-11-22-14-4-3-12(9-13(14)19(28)23-11)10-25(2)17-7-6-16(32-17)20(29)24-15(21(30)31)5-8-18(26)27/h3-4,6-7,9,15H,5,8,10H2,1-2H3,(H,24,29)(H,26,27)(H,30,31)(H,22,23,28)/t15-/m0/s1
InChIKeyIVTVGDXNLFLDRM-HNNXBMFYSA-N
SMILES
SoftwareSMILES
ACDLabs 12.01O=C(c3sc(N(C)Cc2ccc1NC(=NC(=O)c1c2)C)cc3)NC(C(=O)O)CCC(=O)O
CACTVS 3.370CN(Cc1ccc2NC(=NC(=O)c2c1)C)c3sc(cc3)C(=O)N[CH](CCC(O)=O)C(O)=O
OpenEye OEToolkits 1.7.6CC1=NC(=O)c2cc(ccc2N1)CN(C)c3ccc(s3)C(=O)N[C@@H](CCC(=O)O)C(=O)O
CACTVS 3.370CN(Cc1ccc2NC(=NC(=O)c2c1)C)c3sc(cc3)C(=O)N[C@@H](CCC(O)=O)C(O)=O
OpenEye OEToolkits 1.7.6CC1=NC(=O)c2cc(ccc2N1)CN(C)c3ccc(s3)C(=O)NC(CCC(=O)O)C(=O)O
FormulaC21 H22 N4 O6 S
NameTOMUDEX;
ZD1694;
Raltitrexed
ChEMBLCHEMBL225071
DrugBankDB00293
ZINCZINC000003832372
PDB chain2kce Chain B Residue 568 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB2kce Binding of the anticancer drug ZD1694 to E. coli thymidylate synthase: assessing specificity and affinity.
Resolution2.2 Å
Binding residue
(original residue number in PDB)		H51 S54 I79 W80 W83 D169 G173 F176 Y209 A263
Binding residue
(residue number reindexed from 1)		H51 S54 I79 W80 W83 D169 G173 F176 Y209 A263
Annotation score1
Binding affinityMOAD: Ki=0.67uM
PDBbind-CN: -logKd/Ki=6.17,Ki=0.67uM
BindingDB: IC50=2300nM
Enzymatic activity
Catalytic site (original residue number in PDB) E58 W80 Y94 C146 R166 D169 P175
Catalytic site (residue number reindexed from 1) E58 W80 Y94 C146 R166 D169 P175
Enzyme Commision number 2.1.1.45: thymidylate synthase.
Gene Ontology
Molecular Function
GO:0000287 magnesium ion binding
GO:0003723 RNA binding
GO:0004799 thymidylate synthase activity
GO:0008168 methyltransferase activity
GO:0016741 transferase activity, transferring one-carbon groups
GO:0042803 protein homodimerization activity
Biological Process
GO:0006231 dTMP biosynthetic process
GO:0006235 dTTP biosynthetic process
GO:0006417 regulation of translation
GO:0009165 nucleotide biosynthetic process
GO:0009314 response to radiation
GO:0032259 methylation
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol

View graph for
Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:2kce, PDBe:2kce, PDBj:2kce
PDBsum2kce
PubMed8939755
UniProtP0A884|TYSY_ECOLI Thymidylate synthase (Gene Name=thyA)

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