Protein
Plasma membrane-associated coenzyme Q6 reductase PGA3
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Function
NADH-dependent cytochrome b5 reductase that reduces coenzyme Q6 at the plasma membrane and mediates lifespan extension by calorie restriction by shifting fermentative to respiratory metabolism, probably through modulating the NAD(+)/NADH ratio.
Similarity
Belongs to the flavoprotein pyridine nucleotide cytochrome reductase family.
Sequence
MSKEDIEGTNILDEPVHGIYIPAALFVVGVAITTYMSGELKILWSLPILFMIIFVRAYSAYKRRRSLYPDRWTSLELEDQTIISKNTALYRFKLKTRLESLDIPAGHHVAVRVPIDGKQEVRYYNPISSKLESGYLDLVVKAYVDGKVSKYFAGLNSGDTVDFKGPIGTLNYEPNSSKHLGIVAGGSGITPVLQILNEIITVPEDLTKVSLLYANETENDILLKDELDEMAEKYPHFQVHYVVHYPSDRWTGDVGYITKDQMNRYLPEYSEDNRLLICGPDGMNNLALQYAKELGWKVNSTRSSGDDQVFVF