3NQU

Crystal structure of partially trypsinized (CENP-A/H4)2 heterotetramer

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Histone H3-like centromeric protein A	polymer	140	16023.6	1	UniProt (P49450) Pfam (PF00125) In PDB	Homo sapiens (human)	Centromere protein A, CENP-A, Centromere autoantigen A
2	B	Histone H4	polymer	103	11394.4	1	UniProt (P62805) Pfam (PF15511) In PDB	Homo Sapiens (Human)
3	A, B	SULFATE ION	non-polymer		96.1	5	Chemie (SO4)
4		water	water		18.0	17	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	27418.1
Non-Polymers*	Number of molecules	5
	Total formula weight	480.3
All*	Total formula weight	27898.4

*Water molecules are not included.