4BE7

MUTANT (K220R) OF THE HSDR SUBUNIT OF THE ECOR124I RESTRICTION ENZYME IN COMPLEX WITH ATP

Replaces:  2W74

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B, D	TYPE I RESTRICTION ENZYME ECOR124II R PROTEIN	polymer	1038	120306.9	2	UniProt (Q304R3) Pfam (PF04313) Pfam (PF18766) Pfam (PF22679) Pfam (PF12008) UniProt (by SIFTS) (P10486) In PDB	ESCHERICHIA COLI	R.ECOR124II, TYPE I RESTRICTION ENZYME ECOR124II R PROTEIN HSDR
2	B, D	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	2	Chemie (ATP)
3	B, D	PHOSPHATE ION	non-polymer		95.0	4	Chemie (PO4)
4	B, D	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
5		water	water		18.0	78	Chemie (HOH)

Sequence modifications

B, D: 1 - 1038 (UniProt: Q304R3)

PDB	External Database	Details
Arg 220	Lys 220	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	240613.8
Non-Polymers*	Number of molecules	8
	Total formula weight	1442.9
All*	Total formula weight	242056.6

*Water molecules are not included.