1Z69

Crystal structure of methylenetetrahydromethanopterin reductase (Mer) in complex with coenzyme F420

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 (A, B, C, D)	Coenzyme F420-dependent N(5),N(10)-methylenetetrahydromethanopterin reductase	polymer	327	34501.9	4	GenBank (48840204) Pfam (PF00296) UniProt (by SIFTS) (Q46FV4)	Methanosarcina barkeri	COG2141; Methylene-H(4)MPT reductase
2	E, G, H, J (A, B, C, D)	COENZYME F420	non-polymer		773.6	4	Chemie (F42)
3	F, I (B, D)	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
4	K (D)	2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL	non-polymer		252.3	1	Chemie (1PG)
5	L, M, N, O (A, B, C, D)	water	water		18.0	239	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	138007.8
Non-Polymers*	Number of molecules	7
	Total formula weight	3417.6
All*	Total formula weight	141425.3

*Water molecules are not included.