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6CXK

E. coli DHFR substrate complex with Dihydrofolate

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Dihydrofolate reductasepolymer16518848.21UniProt (P0ABQ5)
Pfam (PF00186)
UniProt (by SIFTS) (P0ABQ4)
Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC)
2B, C, D, E, F...
(A)
MAGNESIUM IONnon-polymer24.38Chemie (MG)
3J
(A)
CHLORIDE IONnon-polymer35.51Chemie (CL)
4K
(A)
DIHYDROFOLIC ACIDnon-polymer443.41Chemie (DHF)
5L
(A)
waterwater18.0202Chemie (HOH)
Sequence modifications
A: 1 - 159 (UniProt: P0ABQ5)
PDBExternal DatabaseDetails
His 160-expression tag
His 161-expression tag
His 162-expression tag
His 163-expression tag
His 164-expression tag
His 165-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight18848.2
Non-Polymers*Number of molecules10
Total formula weight673.3
All*Total formula weight19521.5
*Water molecules are not included.

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PDB entries from 2025-06-25

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