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  • Title: [Operon of riboflavin biosynthesis in Bacillus subtilis. XV. A study of mutants related to the initial stages of biosynthesis. The origin of the ribityl chain of the riboflavin molecule].
    Author: Bresler SE, Gorinchuk GF, Chernik TP, Perumov DA.
    Journal: Genetika; 1978; 14(12):2082-90. PubMed ID: 105966.
    Abstract:
    The incorporation of 14C-labelled guanosine and xanthosine into riboflavin was studied. It is concluded that the ribose mojety of guanosine is converted to the ribityl side chain of riboflavin. Thus the immediate precursor of riboflavin biosynthesis is a guanosine compound. Two classes of the riboflavin-dependent mutants of Bacillus subtilis were studied. They are closely linked to the lysine markers and probably correspond to the initial steps of riboflavin biosynthesis pathway.
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