1LVO

Structure of coronavirus main proteinase reveals combination of a chymotrypsin fold with an extra alpha-helical domain

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D, E... (A, B, C, D, E...)	Replicase, hydrolase domain	polymer	302	33123.4	6	UniProt (Q9IW06) Pfam (PF05409) UniProt (by SIFTS) (P0C6Y5)	Transmissible gastroenteritis virus
2	DA, EA, FA, G, GA... (D, A, E, B, F...)	SULFATE ION	non-polymer		96.1	27	Chemie (SO4)
3	AA, BA, L, M, N... (C, A, E, B, F)	1,4-DIETHYLENE DIOXIDE	non-polymer		88.1	9	Chemie (DIO)
4	CA, IA, O, PA, U... (C, D, A, E, B...)	(4R)-2-METHYLPENTANE-2,4-DIOL	non-polymer		118.2	6	Chemie (MRD)
5	AB, BB, WA, XA, YA... (E, F, A, B, C...)	water	water		18.0	1003	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	198740.4
Non-Polymers*	Number of molecules	42
	Total formula weight	4095.7
All*	Total formula weight	202836.1

*Water molecules are not included.