[Riboflavin biosynthesis in yeast as a model for estimating mechanisms of regulating synthesis of biologically active substances]. / Biosyntez ryboflavinu u drizhdzhiv iak model' dlia doslidzhennia mekhanizmiv rehuliatsiï syntezu biolohichno aktyvnykh rechovyn.

General principles of regulation of transcription in eucaryotic cells are characterized. Investigations on riboflavin biosynthesis and regulation of this process in yeasts are summarized. The data obtained permit to consider riboflavin biosynthesis control as an interesting and convenient model capable to estimate the mechanisms various transcription factors action. These investigations are required in order to reveal general features of vitamins and relative compounds biosynthesis regulation.