4OC8

DNA modification-dependent restriction endonuclease AspBHI

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	restriction endonuclease AspBHI	polymer	388	42815.6	4	UniProt (A1K2B7) Pfam (PF18062) Pfam (PF04471) In PDB	Azoarcus sp.
2	A, B, C, D	PHOSPHATE ION	non-polymer		95.0	8	Chemie (PO4)
3		water	water		18.0	53	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	171262.3
Non-Polymers*	Number of molecules	8
	Total formula weight	759.8
All*	Total formula weight	172022.1

*Water molecules are not included.