1HBN

METHYL-COENZYME M REDUCTASE

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D (A, D)	METHYL-COENZYME M REDUCTASE I ALPHA SUBUNIT	polymer	549	60508.5	2	UniProt (P11558) Pfam (PF02745) Pfam (PF02249)	METHANOTHERMOBACTER THERMAUTOTROPHICUS
2	B, E (B, E)	METHYL-COENZYME M REDUCTASE I BETA SUBUNIT	polymer	442	47148.5	2	UniProt (P11560) Pfam (PF02783) Pfam (PF02241)	METHANOTHERMOBACTER THERMAUTOTROPHICUS
3	C, F (C, F)	METHYL-COENZYME M REDUCTASE I GAMMA SUBUNIT	polymer	248	28666.0	2	UniProt (P11562) Pfam (PF02240)	METHANOTHERMOBACTER THERMAUTOTROPHICUS
4	G, HA (A, D)	FACTOR 430	non-polymer		906.6	2	Chemie (F43)
5	H, IA (A, D)	Coenzyme B	non-polymer		343.3	2	Chemie (TP7)
6	I, JA (A, D)	1-THIOETHANESULFONIC ACID	non-polymer		142.2	2	Chemie (COM)
7	EA, J, K, KA, L... (C, A, D, E, B)	GLYCEROL	non-polymer		92.1	11	Chemie (GOL)
8	N (A)	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
9	AB, BA, BB, DA, FA... (F, B, C, A, D...)	MAGNESIUM ION	non-polymer		24.3	18	Chemie (MG)
10	CA, P, Q, QA, R... (B, A, D)	SODIUM ION	non-polymer		23.0	10	Chemie (NA)
11	AA, UA (B, E)	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
12	CB, DB, EB, FB, GB... (A, B, C, D, E...)	water	water		18.0	2393	Chemie (HOH)

Sequence modifications

A, D: 2 - 550 (UniProt: P11558)

PDB	External Database	Details
Mhs 257	His 256	modified residue
Agm 271	Arg 270	modified residue
Mgn 400	Gln 399	modified residue
Gl3 445	Gly 444	modified residue
Smc 452	Cys 451	modified residue

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	272646.0
Non-Polymers*	Number of molecules	48
	Total formula weight	4601.0
All*	Total formula weight	277246.9

*Water molecules are not included.