6GHC

Modification dependent EcoKMcrA restriction endonuclease

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	5-methylcytosine-specific restriction enzyme A	polymer	287	32726.2	2	UniProt (P24200) Pfam (PF01844) In PDB	Escherichia coli (strain K12)	EcoKMcrA
2	A, B	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
3		water	water		18.0	51	Chemie (HOH)

Sequence modifications

A, B: 1 - 277 (UniProt: P24200)

PDB	External Database	Details
Met -9	-	initiating methionine
Gly -8	-	expression tag
His -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
Glu -1	-	expression tag
Phe 0	-	expression tag
Glu 196	Lys 196	conflict

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	65452.4
Non-Polymers*	Number of molecules	4
	Total formula weight	261.6
All*	Total formula weight	65714.0

*Water molecules are not included.