9PKR

SARS-CoV2 main protease bound to compound 26

This is a non-PDB format compatible entry.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	3C-like proteinase nsp5	polymer	305	33697.4	2	UniProt (P0DTD1) Pfam (PF05409)	Severe acute respiratory syndrome coronavirus 2 (2019-nCoV SARS-CoV-2)	3CL-PRO,3CLp,Main protease,Mpro,Non-structural protein 5,nsp5,SARS coronavirus main proteinase
2	C, D (E, F)	(BOC)F(ALC)(ELL) peptide	polymer	3	556.7	2		synthetic construct
3	E, G, H, I (A, B)	SULFATE ION	non-polymer		96.1	4	Chemie (SO4)
4	F (B)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
5	J, K, L, M (A, B, E, F)	water	water		18.0	620	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	68508.2
Non-Polymers*	Number of molecules	5
	Total formula weight	407.2
All*	Total formula weight	68915.5

*Water molecules are not included.