1H56

Structural and biochemical characterization of a new magnesium ion binding site near Tyr94 in the restriction endonuclease PvuII

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	TYPE II RESTRICTION ENZYME PVUII	polymer	156	18239.8	2	UniProt (P23657) Pfam (PF09225) In PDB	PROTEUS VULGARIS	ENDONUCLEASE PVUII, R.PVUII
2	A, B	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
3		water	water		18.0	68	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	36479.6
Non-Polymers*	Number of molecules	2
	Total formula weight	48.6
All*	Total formula weight	36528.2

*Water molecules are not included.