Methyl-coenzyme M reductase alpha subunit, N-terminal domain
Methyl-coenzyme M reductase (MCR) is the enzyme responsible for microbial formation of methane. It is a hexamer composed of 2 alpha (this family), 2 beta (pfam02241), and 2 gamma (pfam02240) subunits with two identical nickel porphinoid active sites. The N-terminal domain has a ferredoxin-like fold.
Lu S et al.(2020). "CDD/SPARCLE: the conserved domain database in 2020.",