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Evidence that aldolase and D-arabinose 5-phosphate are components of pentose pathway reactions in liver in vitro

, : Evidence that aldolase and D-arabinose 5-phosphate are components of pentose pathway reactions in liver in vitro. Biochemistry International 8(4): 491-500

An immunochemical procedure involving the reaction of liver aldolase antibody and rat liver enzyme preparation shows that conversion of ribose 5-P to hexose 6-P by reactions of the non-oxidative pentose pathway fails to occur in the absence of aldolase activity. Radioautography of pentose pathway products formed by liver enzyme catalysis of [U-14C] arabinose 5-P and unlabelled ribose 5-P illustrates the incorporation of 14C into ketopentose, sedoheptulose, fructose and glucose phosphates. There is approximate congruity of the mole specific radioactivity of the pentose and hexose phosphates. These findings are consistent with the proposal that L-pentose pathway reactions constitute the non-oxidative segment of the pathway in liver.


PMID: 6541043

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