5C3N

Crystal structure of MERS coronavirus main protease in spacegroup C2221

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)	ORF1a protein	polymer	306	33354.2	2	UniProt (A0A0A7E693) Pfam (PF05409) UniProt (by SIFTS) (V9TU05)	Middle East respiratory syndrome coronavirus

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	66708.3
All*	Total formula weight	66708.3

*Water molecules are not included.