Structure of PDB 3nzb Chain X Binding Site BS03

Receptor Information
>3nzb Chain X (length=206) Species: 4754 (Pneumocystis carinii) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
MNQQKSLTLIVALTTSYGIGRSNSLPWKLKKEISYFKRVTSFVPTFDSFE
SMNVVLMGRKTWESIPLQFRPLKGRINVVITRNESLDLGNGIHSAKSLDH
ALELLYRTYGSESSVQINRIFVIGGAQLYKAAMDHPKLDRIMATIIYKDI
HCDVFFPLKFRDKEWSSVWKKEKHSDLESWVGTKVPHGKINEDGFDYEFE
MWTRDL
Ligand information
Ligand IDD2N
InChIInChI=1S/C24H31N5O4/c1-4-32-20(30)8-6-5-7-11-33-18-9-10-19(31-3)16(13-18)12-17-14-27-23-21(15(17)2)22(25)28-24(26)29-23/h9-10,13-14H,4-8,11-12H2,1-3H3,(H4,25,26,27,28,29)
InChIKeyFGBRLIYQKRWOSO-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.370CCOC(=O)CCCCCOc1ccc(OC)c(Cc2cnc3nc(N)nc(N)c3c2C)c1
ACDLabs 12.01O=C(OCC)CCCCCOc1cc(c(OC)cc1)Cc2c(c3c(nc2)nc(nc3N)N)C
OpenEye OEToolkits 1.7.0CCOC(=O)CCCCCOc1ccc(c(c1)Cc2cnc3c(c2C)c(nc(n3)N)N)OC
FormulaC24 H31 N5 O4
Nameethyl 6-{3-[(2,4-diamino-5-methylpyrido[2,3-d]pyrimidin-6-yl)methyl]-4-methoxyphenoxy}hexanoate
ChEMBLCHEMBL435938
DrugBank
ZINCZINC000013646399
PDB chain3nzb Chain X Residue 209 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB3nzb Structural analysis of Pneumocystis carinii and human DHFR complexes with NADPH and a series of five potent 6-[5'-([omega]-carboxyalkoxy)benzyl]pyrido[2,3-d]pyrimidine derivatives
Resolution1.45 Å
Binding residue
(original residue number in PDB)		I10 V11 E32 I33 F36 K37 F69 I123
Binding residue
(residue number reindexed from 1)		I10 V11 E32 I33 F36 K37 F69 I123
Annotation score1
Binding affinityMOAD: ic50=35nM
BindingDB: IC50=35nM
Enzymatic activity
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
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:0005739 mitochondrion

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Cellular Component
External links
PDB RCSB:3nzb, PDBe:3nzb, PDBj:3nzb
PDBsum3nzb
PubMed21206056
UniProtP16184|DYR_PNECA Dihydrofolate reductase

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