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Cryo EM structure of elk ACE2 in complex with SARS-CoV-2 spike trimer

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Angiotensin-converting enzyme 2	polymer	622	72442.5	1		Cervus canadensis
2	B, C, D (B, C, D)	Spike protein	polymer	1284	142472.9	3		Severe acute respiratory syndrome coronavirus 2
3	AA, BA, CA, DA, E... (D, A, B, C)	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	26	Chemie (NAG)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	499861.2
Non-Polymers*	Number of molecules	26
	Total formula weight	5751.4
All*	Total formula weight	505612.6

*Water molecules are not included.