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9ZJ4

Crystal structure of SARS-CoV-2 3CL protease in complex with inhibitor IKR-I-45

This is a non-PDB format compatible entry.
Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
3C-like proteinasepolymer30934068.81UniProt (P0DTD1)Severe acute respiratory syndrome coronavirus 23CL-PRO, 3CLp, Main protease, Mpro, Non-structural protein 5, nsp5, SARS coronavirus main proteinase
2B
(A)
CHLORIDE IONnon-polymer35.51Chemie (CL)
PubChem (312)
3C
(A)
N~2~-[(2S,4S)-3-benzyl-4-methyl-2-oxo-1,3,2lambda~5~-oxazaphospholidin-2-yl]-N-{(2S)-1-oxo-3-[(3S)-2-oxopyrrolidin-3-yl]propan-2-yl}-L-leucinamidenon-polymer478.51Chemie (A1C2T)
4D
(A)
waterwater18.013Chemie (HOH)
Sequence modifications
A: 1 - 305 (UniProt: P0DTD1)
PDBExternal DatabaseDetails
Ser -3-expression tag
Asn -2-expression tag
Ile -1-expression tag
Gly 0-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight34068.8
Non-Polymers*Number of molecules2
Total formula weight514.0
All*Total formula weight34582.8
*Water molecules are not included.

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PDB entries from 2026-06-10

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