EC 3.6.1.18     
Accepted name: FAD diphosphatase
Reaction: FAD + H2O = AMP + FMN
Other name(s): FAD pyrophosphatase; riboflavin adenine dinucleotide pyrophosphatase; flavin adenine dinucleotide pyrophosphatase; riboflavine adenine dinucleotide pyrophosphatase; flavine adenine dinucleotide pyrophosphatase
Systematic name: FAD nucleotidohydrolase
Comments: The plant enzyme also hydrolyses NAD+ and NADH; the animal enzyme hydrolyses NAD+ and CoA at about half of the rate of hydrolysis of FAD. May be identical with EC 3.6.1.9 nucleotide diphosphatase.
References:
1.  Ravindranath, S.D. and Appaji Rao, N. Nucleotidases in plants. 3. Effect of metabolites on the enzyme hydrolyzing flavine adenine dinucleotide (FAD) from Phaseolus radiatus. Arch. Biochem. Biophys. 133 (1969) 54–59. [PMID: 5810832]
2.  Shin, H.J. and Mego, J.L. A rat liver lysosomal membrane flavin-adenine dinucleotide phosphohydrolase: purification and characterization. Arch. Biochem. Biophys. 267 (1988) 95–103. [PMID: 2848456]
[EC 3.6.1.18 created 1972]