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1KMS

HUMAN DIHYDROFOLATE REDUCTASE COMPLEXED WITH NADPH AND 6-([5-QUINOLYLAMINO]METHYL)-2,4-DIAMINO-5-METHYLPYRIDO[2,3-D]PYRIMIDINE (SRI-9439), A LIPOPHILIC ANTIFOLATE

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
DIHYDROFOLATE REDUCTASEpolymer18621349.51UniProt (P00374)
Pfam (PF00186)
Homo sapiens (human)DHFR
2B, C
(A)
SULFATE IONnon-polymer96.12Chemie (SO4)
3D
(A)
6-([5-QUINOLYLAMINO]METHYL)-2,4-DIAMINO-5-METHYLPYRIDO[2,3-D]PYRIMIDINEnon-polymer331.41Chemie (LIH)
4E
(A)
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATEnon-polymer745.41Chemie (NDP)
5F
(A)
waterwater18.0399Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight21349.5
Non-Polymers*Number of molecules4
Total formula weight1268.9
All*Total formula weight22618.4
*Water molecules are not included.

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PDB entries from 2025-07-16

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