Ehb (energy-converting hydrogenase B) is an methanogenic archaeal enzyme that functions in one of the metabolic pathways involved in methanol reduction to methane. This family contains subunit P of Ehb.

1: The genome sequence of Methanosphaera stadtmanae reveals why this human intestinal archaeon is restricted to methanol and H2 for methane formation and ATP synthesis. Fricke WF, Seedorf H, Henne A, Kruer M, Liesegang H, Hedderich R, Gottschalk G, Thauer RK; J Bacteriol. 2006;188:642-658. PMID:16385054