3SSC

DNA binding domain of restriction endonuclease bound to DNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	5-methylcytosine-specific restriction enzyme B	polymer	170	19659.9	2	UniProt (P15005) Pfam (PF12102)	Escherichia coli	EcoKMcrBC
2	C (C)	DNA (5'-D(*TP*GP*AP*GP*AP*(5CM)P*CP*GP*GP*TP*AP*GP*C)-3')	polymer	13	4030.7	1
3	D (D)	DNA (5'-D(*AP*GP*CP*TP*AP*(5CM)P*CP*GP*GP*TP*CP*TP*C)-3')	polymer	13	3941.6	1
4	E, F, G, H (A, B, C, D)	water	water		18.0	251	Chemie (HOH)

Sequence modifications

A, B: 1 - 161 (UniProt: P15005)

PDB	External Database	Details
Leu 162	-	expression tag
Glu 163	-	expression tag
Gly 164	-	expression tag
His 165	-	expression tag
His 166	-	expression tag
His 167	-	expression tag
His 168	-	expression tag
His 169	-	expression tag
His 170	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	47292.1
All*	Total formula weight	47292.1

*Water molecules are not included.