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3KFY

Dynamic switching and partial occupancies of a small molecule inhibitor complex of DHFR

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Dihydrofolate reductasepolymer15918020.31UniProt (P0ABQ4)
Pfam (PF00186)
Escherichia coli
2B
(A)
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATEnon-polymer745.41Chemie (NDP)
3C
(A)
5-[(4-chlorophenyl)sulfanyl]quinazoline-2,4-diaminenon-polymer302.81Chemie (JZM)
4D, E, F
(A)
CALCIUM IONnon-polymer40.13Chemie (CA)
5G
(A)
waterwater18.0136Chemie (HOH)
Sequence modifications
A: 1 - 159 (UniProt: P0ABQ4)
PDBExternal DatabaseDetails
Asp 37Asn 37variant
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight18020.3
Non-Polymers*Number of molecules5
Total formula weight1168.4
All*Total formula weight19188.8
*Water molecules are not included.

249697

PDB entries from 2026-02-25

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