9CP0

Crystal structure of the porcine astrovirus 4 capsid spike 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 (B, C, D, A)	Spike protein	polymer	247	27132.5	4		Porcine astrovirus 4
2	E, F (B, A)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	G, H, I, J (B, C, D, A)	water	water		18.0	281	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	108530.0
Non-Polymers*	Number of molecules	2
	Total formula weight	80.2
All*	Total formula weight	108610.1

*Water molecules are not included.