This is a flavin reductase family consisting of enzymes known tobe flavin reductases as well as various oxidoreductase andmonooxygenase components. VlmR is a flavin reductase thatfunctions in a two-component enzyme system to provideisobutylamine N-hydroxylase with reduced flavin and may beinvolved in the synthesis of valanimycin [1]. SnaC is a flavinreductase that provides reduced flavin for the oxidation ofpristinamycin IIB to pristinamycin IIA as catalysed by SnaA,SnaB heterodimer [2]. This flavin reductase regioncharacterised by enzymes of the family is present in theC-terminus of potential FMN proteins from Synechocystis sp.suggesting it is a flavin reductase domain [1]. Flavin reductase like domain Flavin_Reduct