7VSR

Structure of McrBC (stalkless mutant)

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, E...	5-methylcytosine-specific restriction enzyme B	polymer	468	54272.1	12	UniProt (P15005) Pfam (PF12102) Pfam (PF07728) In PDB	Escherichia coli (strain K12)	EcoKMcrBC
2	M, N	Protein McrC	polymer	310	36223.5	2	UniProt (P15006) Pfam (PF10117) In PDB	Escherichia coli (strain K12)
3	A, B, C, G, H...	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER	non-polymer		522.2	6	Chemie (GNP)
4	A, B, C, G, H...	MAGNESIUM ION	non-polymer		24.3	6	Chemie (MG)

Sequence modifications

A, B, C, D, E, F, G, H, I, J, K, L: 1 - 459 (UniProt: P15005)

PDB	External Database	Details
Ser 460	-	expression tag
Gly 461	-	expression tag
Ser 462	-	expression tag
His 463	-	expression tag
His 464	-	expression tag
His 465	-	expression tag
His 466	-	expression tag
His 467	-	expression tag
His 468	-	expression tag

M, N: 1 - 59 (UniProt: P15006)
M, N: 62 - 310 (UniProt: P15006)

PDB	External Database	Details
Gly 60	-	linker
Gly 61	-	linker

Contents of the asymmetric unit

Polymers	Number of chains	14
	Total formula weight	723712.4
Non-Polymers*	Number of molecules	12
	Total formula weight	3279.0
All*	Total formula weight	726991.4

*Water molecules are not included.