6GAM

Structure of E14Q variant of E. coli hydrogenase-2 (as-isolated enzyme)

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-2 small chain	polymer	301	32744.9	2	UniProt (P69741) Pfam (PF01058) Pfam (PF14720)	Escherichia coli (strain K12)	HYD2,Membrane-bound hydrogenase 2 small subunit,NiFe hydrogenase
2	B, D (L, M)	Hydrogenase-2 large chain	polymer	567	62556.9	2	UniProt (P0ACE0) Pfam (PF00374)	Escherichia coli (strain K12)	HYD2,Membrane-bound hydrogenase 2 large subunit,NiFe hydrogenase
3	E, G, K, M (S, T)	IRON/SULFUR CLUSTER	non-polymer		351.6	4	Chemie (SF4)
4	F, L (S, T)	FE3-S4 CLUSTER	non-polymer		295.8	2	Chemie (F3S)
5	H, N (L, M)	CARBONMONOXIDE-(DICYANO) IRON	non-polymer		135.9	2	Chemie (FCO)
6	I, O (L, M)	NICKEL (II) ION	non-polymer		58.7	2	Chemie (NI)
7	J, P (L, M)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
8	Q, R, S, T (S, L, T, M)	water	water		18.0	1068	Chemie (HOH)

Sequence modifications

S, T: 1 - 293 (UniProt: P69741)

PDB	External Database	Details
Arg 294	-	expression tag
Ser 295	-	expression tag
His 296	-	expression tag
His 297	-	expression tag
His 298	-	expression tag
His 299	-	expression tag
His 300	-	expression tag
His 301	-	expression tag

L, M: 1 - 567 (UniProt: P0ACE0)

PDB	External Database	Details
Gln 14	Glu 14	variant

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	190603.6
Non-Polymers*	Number of molecules	12
	Total formula weight	2435.9
All*	Total formula weight	193039.5

*Water molecules are not included.