6HZ4

Structure of McrBC without DNA binding domains (one half of the full complex)

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	307	35758.5	6	UniProt (P15005) Pfam (PF07728) In PDB	Escherichia coli (strain K12)	EcoKMcrBC
2	M, N	Protein McrC	polymer	348	40643.6	2	UniProt (P15006) Pfam (PF10117) In PDB	Escherichia coli (strain K12)
3	A, B, C	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER	non-polymer		522.2	3	Chemie (GNP)
4	A, B, C	MAGNESIUM ION	non-polymer		24.3	3	Chemie (MG)
5	D, E, F	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	3	Chemie (GDP)

Sequence modifications

A, B, C, D, E, F: 162 - 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

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	295838.2
Non-Polymers*	Number of molecules	9
	Total formula weight	2969.1
All*	Total formula weight	298807.3

*Water molecules are not included.