The enzyme from mammalian kidney contains one mole of FAD per mole of enzyme.(R)-lactate, (R)-malate and meso-tartrate are good substrates. Ubiquinone-1 and the dye 2,6-dichloroindophenol can act as acceptors; NAD+ and NADP+ are not acceptors.
Cofactor
FAD
History
Reactions
(R)-2-hydroxyacid + a quinone = 2-oxoacid + a quinol.