2Y7H

Atomic model of the DNA-bound methylase complex from the Type I restriction-modification enzyme EcoKI (M2S1). Based on fitting into EM map 1534.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	TYPE-1 RESTRICTION ENZYME ECOKI SPECIFICITY PROTEIN	polymer	464	51468.2	1	UniProt (P05719) Pfam (PF01420) In PDB	ESCHERICHIA COLI	HSDS TYPE I DNA RESTRICTION SPECIFICITY SUBUNIT, S.ECOKI, TYPE I RESTRICTION ENZYME ECOKI SPECIFICITY PROTEIN, S PROTEIN
2	B, C	TYPE I RESTRICTION ENZYME ECOKI M PROTEIN	polymer	529	59378.3	2	UniProt (P08957) Pfam (PF12161) Pfam (PF02384) In PDB	ESCHERICHIA COLI	HSDM TYPE I DNA RESTRICTION METHYLTRANSFERASE SUBUNIT, M.ECOKI
3	D	5'-D(*GP*TP*TP*CP*AP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*GP*CP*AP*AP*C)-3'	polymer	20	6119.0	1		ESCHERICHIA COLI
4	E	5'-D(*GP*TP*TP*GP*CP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*TP*GP*AP*AP*C)-3'	polymer	20	6150.0	1		ESCHERICHIA COLI
5	B, C	S-ADENOSYLMETHIONINE	non-polymer		398.4	2	Chemie (SAM)

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	182493.8
Non-Polymers*	Number of molecules	2
	Total formula weight	796.9
All*	Total formula weight	183290.7

*Water molecules are not included.