3UQY

H2-reduced structure of E. coli hydrogenase-1

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (S, T)	Hydrogenase-1 small chain	polymer	335	36814.7	2	UniProt (P69739) Pfam (PF01058) Pfam (PF14720)	Escherichia coli	HYD1, Membrane-bound hydrogenase 1 small subunit, NiFe hydrogenase
2	B, D (L, M)	Hydrogenase-1 large chain	polymer	582	64751.4	2	UniProt (P0ACD8) Pfam (PF00374)	Escherichia coli	HYD1, Membrane-bound hydrogenase 1 large subunit, NiFe hydrogenase
3	E, T (S, T)	IRON/SULFUR CLUSTER	non-polymer		351.6	2	Chemie (SF4)
4	F, U (S, T)	FE3-S4 CLUSTER	non-polymer		295.8	2	Chemie (F3S)
5	G, V (S, T)	FE4-S3 CLUSTER	non-polymer		319.6	2	Chemie (F4S)
6	H, W (S, T)	DODECYL-BETA-D-MALTOSIDE	non-polymer		510.6	2	Chemie (LMT)
7	DA, I, J, S, X (M, S, L, T)	CHLORIDE ION	non-polymer		35.5	5	Chemie (CL) PubChem (312)
8	K, L, P, Y, Z (S, L, T)	SULFATE ION	non-polymer		96.1	5	Chemie (SO4)
9	AA, M (M, L)	CARBONMONOXIDE-(DICYANO) IRON	non-polymer		135.9	2	Chemie (FCO)
10	BA, N (M, L)	NICKEL (II) ION	non-polymer		58.7	2	Chemie (NI) PubChem (934)
11	CA, O (M, L)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG) PubChem (888)
12	Q, R (L)	GLYCEROL	non-polymer		92.1	2	Chemie (GOL) PubChem (753)
13	EA, FA, GA, HA (S, L, T, M)	water	water		18.0	1606	Chemie (HOH)

Sequence modifications

S, T: 1 - 327 (UniProt: P69739)

PDB	External Database	Details
Arg 328	-	expression tag
Ser 329	-	expression tag
His 330	-	expression tag
His 331	-	expression tag
His 332	-	expression tag
His 333	-	expression tag
His 334	-	expression tag
His 335	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	203132.1
Non-Polymers*	Number of molecules	26
	Total formula weight	4234.8
All*	Total formula weight	207366.9

*Water molecules are not included.