Structure of PDB 1df7 Chain A Binding Site BS02

Receptor Information
>1df7 Chain A (length=159) Species: 1773 (Mycobacterium tuberculosis) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
MVGLIWAQATSGVIGRGGDIPWRLPEDQAHFREITMGHTIVMGRRTWDSL
PAKVRPLPGRRNVVLSRQADFMASGAEVVGSLEEALTSPETWVIGGGQVY
ALALPYATRCEVTEVDIGLPREAGDALAPVLDETWRGETGEWRFSRSGLR
YRLYSYHRS
Ligand information
Ligand IDMTX
InChIInChI=1S/C20H22N8O5/c1-28(9-11-8-23-17-15(24-11)16(21)26-20(22)27-17)12-4-2-10(3-5-12)18(31)25-13(19(32)33)6-7-14(29)30/h2-5,8,13H,6-7,9H2,1H3,(H,25,31)(H,29,30)(H,32,33)(H4,21,22,23,26,27)/t13-/m0/s1
InChIKeyFBOZXECLQNJBKD-ZDUSSCGKSA-N
SMILES
SoftwareSMILES
CACTVS 3.341CN(Cc1cnc2nc(N)nc(N)c2n1)c3ccc(cc3)C(=O)N[CH](CCC(O)=O)C(O)=O
CACTVS 3.341CN(Cc1cnc2nc(N)nc(N)c2n1)c3ccc(cc3)C(=O)N[C@@H](CCC(O)=O)C(O)=O
OpenEye OEToolkits 1.5.0CN(Cc1cnc2c(n1)c(nc(n2)N)N)c3ccc(cc3)C(=O)NC(CCC(=O)O)C(=O)O
ACDLabs 10.04O=C(O)C(NC(=O)c1ccc(cc1)N(C)Cc2nc3c(nc2)nc(nc3N)N)CCC(=O)O
OpenEye OEToolkits 1.5.0CN(Cc1cnc2c(n1)c(nc(n2)N)N)c3ccc(cc3)C(=O)N[C@@H](CCC(=O)O)C(=O)O
FormulaC20 H22 N8 O5
NameMETHOTREXATE
ChEMBLCHEMBL34259
DrugBankDB00563
ZINCZINC000001529323
PDB chain1df7 Chain A Residue 501 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1df7 Three-dimensional structure of M. tuberculosis dihydrofolate reductase reveals opportunities for the design of novel tuberculosis drugs.
Resolution1.7 Å
Binding residue
(original residue number in PDB)		I5 W6 I20 D27 Q28 F31 R32 R60 I94
Binding residue
(residue number reindexed from 1)		I5 W6 I20 D27 Q28 F31 R32 R60 I94
Annotation score2
Binding affinityMOAD: Ki=11nM
BindingDB: IC50=8.8nM
Enzymatic activity
Catalytic site (original residue number in PDB) I5 I20 W22 D27 Q28 F31 L57 T91 T113
Catalytic site (residue number reindexed from 1) I5 I20 W22 D27 Q28 F31 L57 T91 T113
Enzyme Commision number 1.5.1.3: dihydrofolate reductase.
Gene Ontology
Molecular Function
GO:0004146 dihydrofolate reductase activity
GO:0016491 oxidoreductase activity
GO:0050661 NADP binding
GO:0070401 NADP+ binding
Biological Process
GO:0006730 one-carbon metabolic process
GO:0046452 dihydrofolate metabolic process
GO:0046654 tetrahydrofolate biosynthetic process
GO:0046655 folic acid metabolic process
Cellular Component
GO:0005829 cytosol

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1df7, PDBe:1df7, PDBj:1df7
PDBsum1df7
PubMed10623528
UniProtP9WNX1|DYR_MYCTU Dihydrofolate reductase (Gene Name=folA)

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