Protein
NAD(P)H dehydrogenase (quinone)
Organism
Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126)
Function
It seems to function in response to environmental stress when various electron transfer chains are affected or when the environment is highly oxidizing. It reduces quinones to the hydroquinone state to prevent interaction of the semiquinone with O2 and production of superoxide. It prefers NADH over NADPH.
Similarity
Belongs to the WrbA family.
Sequence
MARILVIFHSITGNTMKLAKAVADGAREGGAEVAVKRVPETIPAEILEKNPGYVKVREELESFEVARPEELQDYDAIIFGSPTRFGVMSSQMKQFIDMTGRLWMERRLEGKVGAVFTSNEMPHGGKEATLLSMLLPLFAHGMIIVGLPPAKELYRAGSYYGAASTGVPKEDDLQVAKMLGKRVAEVAEKLC