2W00

Crystal structure of the HsdR subunit of the EcoR124I restriction enzyme in complex with ATP

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)	HSDR	polymer	1038	120982.3	2	UniProt (Q304R3) Pfam (PF04313) Pfam (PF18766) Pfam (PF22679) Pfam (PF12008) UniProt (by SIFTS) (P10486)	ESCHERICHIA COLI	R.ECOR124I
2	C, E (A, B)	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	2	Chemie (ATP)
3	D, F (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	G, H (A, B)	water	water		18.0	582	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	241964.7
Non-Polymers*	Number of molecules	4
	Total formula weight	1063.0
All*	Total formula weight	243027.6

*Water molecules are not included.