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1P9U

Coronavirus Main Proteinase (3CLpro) Structure: Basis for Design of anti-SARS Drugs

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D, E...
(A, B, C, D, E...)
putative coronavirus nsp2 (3CL-PRO)polymer30233123.46UniProt (Q9IW06)
Pfam (PF05409)
UniProt (by SIFTS) (P0C6Y5)
Transmissible gastroenteritis virus
2G, H
(G, H)
PHQ-VNSTLQ-CHLOROMETHYLKETONE INHIBITORpolymer8845.82BIRD (PRD_000457)
3BA, CA, DA, EA, FA...
(E, F, A, B, C...)
SULFATE IONnon-polymer96.124Chemie (SO4)
4AA, GA, N, U
(D, E, A, C)
(4R)-2-METHYLPENTANE-2,4-DIOLnon-polymer118.24Chemie (MRD)
5KA, LA, MA, NA, OA...
(A, B, C, D, E...)
waterwater18.0924Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight200431.9
Non-Polymers*Number of molecules28
Total formula weight2778.2
All*Total formula weight203210.1
*Water molecules are not included.

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PDB entries from 2026-03-18

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