This domain superfamily is found in the large subunit of nickel-iron hydrogenase [PMID: 16271886, PMID: 20026074]. Subunit 4 of NADH-quinone oxidoreductase (Nqo4) shares a similar structure with the large subunit of the [NiFe]-hydrogenase [PMID: 16469879].
Ogata H, Hirota S, Nakahara A, Komori H, Shibata N, Kato T, Kano K, Higuchi Y.
Activation process of [NiFe] hydrogenase elucidated by high-resolution X-ray analyses: conversion of the ready to the unready state. Structure 13 1635-42 2005
Marques MC, Coelho R, De Lacey AL, Pereira IA, Matias PM.
The three-dimensional structure of [NiFeSe] hydrogenase from Desulfovibrio vulgaris Hildenborough: a hydrogenase without a bridging ligand in the active site in its oxidised, "as-isolated" state. J. Mol. Biol. 396 893-907 2010
Sazanov LA, Hinchliffe P.
Structure of the hydrophilic domain of respiratory complex I from Thermus thermophilus. Science 311 1430-6 2006
Signatures from InterPro member databases are used to construct an entry.