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8P56

Crystal structure of the main protease (3CLpro/Mpro) of SARS-CoV-2 obtained in presence of 150 micromolar X77.

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
3C-like proteinase nsp5polymer30633825.52UniProt (P0DTD1)
Pfam (PF05409)
Severe acute respiratory syndrome coronavirus 23CL-PRO,3CLp,Main protease,Mpro,Non-structural protein 5,nsp5,SARS coronavirus main proteinase
2C, D, E, F, I...
(A, B)
1,2-ETHANEDIOLnon-polymer62.18Chemie (EDO)
3G, P
(A, B)
CHLORIDE IONnon-polymer35.52Chemie (CL)
4H
(A)
N-(4-tert-butylphenyl)-N-[(1R)-2-(cyclohexylamino)-2-oxo-1-(pyridin-3-yl)ethyl]-1H-imidazole-4-carboxamidenon-polymer459.61Chemie (X77)
5M
(B)
DIMETHYL SULFOXIDEnon-polymer78.11Chemie (DMS)
6N, O
(B)
SODIUM IONnon-polymer23.02Chemie (NA)
7Q, R
(A, B)
waterwater18.0585Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight67651.1
Non-Polymers*Number of molecules14
Total formula weight1151.1
All*Total formula weight68802.2
*Water molecules are not included.

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PDB entries from 2025-06-11

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