Any of a group of naturally occurring pigments including riboflavin. They have a tricyclic aromatic molecular structure.
- Cellular flavins and flavin adenine dinucleotides and mononucleotides exist mostly as cofactors for enzymes involved in oxidation-reduction reactions.
- Studies performed on cultured mammalian cell lines demonstrate that most of the cell fluorescence arises from reduced pyridine nucleotides, flavins, and lipofuscin.
- Most studies of UVA and violet-blue light responses have implicated carotenoids and flavins as molecular photoreceptors.
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