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Flavin mononucleotide (FMN), or riboflavin-5′-phosphate, is derived from riboflavin (vitamin B2) and functions as prosthetic group of various oxidoreductases including NADH dehydrogenase. During catalytic cycle, the reversible interconversion of oxidized (FMN), semiquinone (FMNH•) and reduced (FMNH2) forms occurs. FMN is a stronger oxidizing agent than NAD and is particularly useful because it can take part in both one and two electron transfers.
It is the principal form in which riboflavin is found in cells and tissues. Energetically, it is more expensive to produce, but is more soluble than riboflavin.
E106, a very closely related food dye, is riboflavin-5′-phosphate sodium salt, which consists mainly of the monosodium salt of the 5′-monophosphate ester of riboflavin. It is rapidly turned to free riboflavin after ingestion. It is found in many foods for babies and young children as well as jams, milk products and sweets and sugar products.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Flavin_mononucleotide". A list of authors is available in Wikipedia.|