4F0Q

MspJI Restriction Endonuclease - P21 Form

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	polymer	456	49791.2	4	UniProt (A3PUQ5) Pfam (PF18062) Pfam (PF04471) UniProt (by SIFTS) (A0A0J9X157) In PDB	Mycobacterium sp.
2	A, B, C	MAGNESIUM ION	non-polymer		24.3	3	Chemie (MG)
3		water	water		18.0	989	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	199165.0
Non-Polymers*	Number of molecules	3
	Total formula weight	72.9
All*	Total formula weight	199237.9

*Water molecules are not included.