Phosphatase action on flavin adenine dinucleotide (FAD) can reform flavin mononucleotide (FMN). The enzyme performing the reaction is nucleotide pyrophosphatase (ENPP1) and it exists as a homodimer on the plasma membrane.
Goding, JW, Belli, SI
nucleotide diphosphatase activity of 2xENPP1 [plasma membrane]
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