Hydrolysis of flavin adenine dinucleotide and flavin mononucleotide by rabbit blood.

Abstract
Hydrolysis of FAD and FMN by rabbit blood was studied. The whole blood hydrolyzed FAD and FMN to riboflavin. Blood plasma hydrolyzed FAD rapidly to FMN, but hydrolyzed FMN slowly to riboflavine. Red cells hydrolyzed FAD slowly to FMN, but hydrolyzed FMN rapidly to riboflavine, which is explained by the localization of respective enzymes in blood plasma and cells.