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4KFJ

Human dihydrofolate reductase complexed with NADPH and 5-{3-[3-methoxy-5-(isoquin-5-yl)phenyl]prop-1-yn-1-yl}6-ethylprimidine-2,4-diamine

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
Dihydrofolate reductasepolymer18621349.52UniProt (P00374)
Pfam (PF00186)
Homo sapiens (Human)
2C, I
(A, B)
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATEnon-polymer745.42Chemie (NDP)
3D
(A)
6-ethyl-5-{3-[3-(isoquinolin-5-yl)-5-methoxyphenyl]prop-1-yn-1-yl}pyrimidine-2,4-diaminenon-polymer409.51Chemie (1R0)
4E, H, K, M, N
(A, B)
MAGNESIUM IONnon-polymer24.35Chemie (MG)
5F, L
(A, B)
CHLORIDE IONnon-polymer35.52Chemie (CL)
6G
(A)
ETHANOLnon-polymer46.11Chemie (EOH)
7J
(B)
FOLIC ACIDnon-polymer441.41Chemie (FOL)
8O, P
(A, B)
waterwater18.0386Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight42699.1
Non-Polymers*Number of molecules12
Total formula weight2580.2
All*Total formula weight45279.3
*Water molecules are not included.

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PDB entries from 2025-07-23

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