Catalytic domain structure and predicted operon encoding a putative complex of a group F [FeFe] hydrogenase and group 3 [NiFe] hydrogenase in Thermoplasmatota UBA147 sp002496385. hydA, [FeFe] hydrogenase catalytic domain (fused with hyhS); hydB, diaphorase; hydC, thioredoxin; hydD, nuoG-like conduit protein; hyhL, group 3 [NiFe] hydrogenase catalytic subunit; hyhS, group 3 [NiFe] hydrogenase small/iron-sulfur domain (fused with hydA).
