This family includes heme binding domains from a diverse range of proteins. This family also includes proteins that bind to steroids. The family includes progesterone receptors such as Swiss:O00264 [1,2]. Many members of this subfamily are membrane a ...
This family includes heme binding domains from a diverse range of proteins. This family also includes proteins that bind to steroids. The family includes progesterone receptors such as Swiss:O00264 [1,2]. Many members of this subfamily are membrane anchored by an N-terminal transmembrane alpha helix. This family also includes a domain in some chitin synthases. There is no known ligand for this domain in the chitin synthases.
This domain is found in a variety of oxidoreductases. This domain binds to a molybdopterin cofactor. Xanthine dehydrogenases, that also bind molybdopterin, have essentially no similarity.
Sulfite oxidase (SO) catalyses the terminal reaction in the oxidative degradation of the sulfur-containing amino acids cysteine and methionine specifically the oxidation of sulfite to sulfate by the transfer of an oxygen to the lone pair of electrons on the substrate. It is a member of the molybdopterin oxidoreductase family of proteins that contain a single pterin cofactor ligated to Mo(VI) and two oxo ligands. SO also contains a heme b molecule which is part of the electron transfer pathway from the molybdenum centre to the final electron acceptor (in this case ferrocytochrome c).
Defined by 5 residues: HIS:A-40HIS:A-65ARG:A-138CYS:A-185TYR:A-322