5DMN

Crystal Structure of the Homocysteine Methyltransferase MmuM from Escherichia coli, Apo form

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)	Homocysteine S-methyltransferase	polymer	310	33457.8	2	UniProt (Q47690) Pfam (PF02574)	Escherichia coli (strain K12)	S-methylmethionine:homocysteine methyltransferase
2	C, D (A, B)	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
3	E, F (A, B)	water	water		18.0	13	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	66915.5
Non-Polymers*	Number of molecules	2
	Total formula weight	192.1
All*	Total formula weight	67107.6

*Water molecules are not included.