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9DAR

Structure of E. coli dihydrofolate reductase (DHFR) in an occluded conformation and in complex with cycloguanil

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Dihydrofolate reductasepolymer16118244.61UniProt (P0ABQ5)
Pfam (PF00186)
UniProt (by SIFTS) (P0ABQ4)
Escherichia coli
2B
(A)
1-(4-chlorophenyl)-6,6-dimethyl-1,6-dihydro-1,3,5-triazine-2,4-diaminenon-polymer251.71Chemie (1CY)
3C
(A)
CITRATE ANIONnon-polymer189.11Chemie (FLC)
4D
(A)
waterwater18.048Chemie (HOH)
Sequence modifications
A: 1 - 159 (UniProt: P0ABQ5)
PDBExternal DatabaseDetails
Ser -1-expression tag
His 0-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight18244.6
Non-Polymers*Number of molecules2
Total formula weight440.8
All*Total formula weight18685.4
*Water molecules are not included.

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PDB entries from 2026-03-11

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