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2Fe-2S iron-sulfur cluster-binding protein
The 2Fe-2S ferredoxin family have a general core structure consisting of beta(2)-alpha-beta(2) which a beta-grasp type fold. The domain is around one hundred amino acids with four conserved cysteine residues to which the 2Fe-2S cluster is ligated. This cluster appears within sarcosine oxidase proteins. (from Pfam)
NADH-ubiquinone oxidoreductase-G iron-sulfur binding region
Molybdopterin oxidoreductase Fe4S4 domain
This domain is found in formate dehydrogenase H for which the structure is known. This first domain (residues 1 to 60) of PDB:1aa6 is an Fe4S4 cluster just below the protein surface [1]. [1]. 9036855. Crystal structure of formate dehydrogenase H: catalysis. involving Mo, molybdopterin, selenocysteine, and an Fe4S4. cluster.. Boyington JC, Gladyshev VN, Khangulov SV, Stadtman TC, Sun PD;. Science. 1997;275:1305-1308. (from Pfam)
molybdopterin-dependent oxidoreductase
NADH-quinone oxidoreductase subunit NuoG
This HMM represents the G subunit (one of 14: A->N) of the NADH-quinone oxidoreductase complex I which generally couples NADH and ubiquinone oxidation/reduction in bacteria and mammalian mitochondria while translocating protons, but may act on NADPH and/or plastoquinone in cyanobacteria and plant chloroplasts. This HMM excludes related subunits from formate dehydrogenase complexes.
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