4AY7

methyltransferase from Methanosarcina mazei

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	METHYLCOBALAMIN\: COENZYME M METHYLTRANSFERASE	polymer	348	37177.0	2	UniProt (Q8PXZ6) Pfam (PF01208) In PDB	METHANOSARCINA MAZEI	CORRINOID COENZYME M METHYLTRANSFERASE MTAA
2	A, B	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
3	A, B	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4		water	water		18.0	408	Chemie (HOH)

Sequence modifications

A, B: 1 - 342 (UniProt: Q8PXZ6)

PDB	External Database	Details
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	74354.1
Non-Polymers*	Number of molecules	4
	Total formula weight	179.4
All*	Total formula weight	74533.5

*Water molecules are not included.