Journal of the American Chemical Society p. 7428 - 7435 (1983)
Update date:2022-08-02
Topics:
Gross, Akiva
Abril, Obsidiana
Lewis Jerome M.
Geresh, Shimona
Whitesides, George M.
This paper describes enzymatic syntheses of 5-phospho-D-ribosyl α-1-pyrophosphate (PRPP) on a 75-mmol scale.The reactions used PAN-immobilized PRPP synthetase as catalyst with in situ ATP-cofactor regeneration.In one procedure pure r-5-P was used as a starting material; in a second, r-5-P was synthesized by ribokinase-catalyzed phosphorilation of D-ribose and used in situ.The potential for use of PRPP as a starting material for the preparation of nucleotides was demonstrated by an enzymatic synthesis of UMP.This paper also describes several methods for the preparation of r-5-P: acid-catalyzed hydrolysis of AMP, acid-catalyzed hydrolysis of crude mononucleotide mixture obtained by digestion of RNA, chemical synthesis from D-ribose, and ribokinase-catalyzed synthesis from D-ribose.Procedures are described for the isolation of PRPP synthetase (from Salmonella typhimurium) and ribokinase (from Lactobacillus plantarum) and for immobilization of these enzymes in PAN.
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