Matches in SemOpenAlex for { <https://semopenalex.org/work/W2008403967> ?p ?o ?g. }
- W2008403967 endingPage "1101" @default.
- W2008403967 startingPage "1089" @default.
- W2008403967 abstract "Ribose phosphates are either synthesized through the oxidative branch of the pentose phosphate pathway, or are supplied by nucleoside phosphorylases. The two main pentose phosphates, ribose-5-phosphate and ribose-1-phosphate, are readily interconverted by the action of phosphopentomutase. Ribose-5-phosphate is the direct precursor of 5-phosphoribosyl-1-pyrophosphate, for both de novo and ‘salvage’ synthesis of nucleotides. Phosphorolysis of deoxyribonucleosides is the main source of deoxyribose phosphates, which are interconvertible, through the action of phosphopentomutase. The pentose moiety of all nucleosides can serve as a carbon and energy source. During the past decade, extensive advances have been made in elucidating the pathways by which the pentose phosphates, arising from nucleoside phosphorolysis, are either recycled, without opening of their furanosidic ring, or catabolized as a carbon and energy source. We review herein the experimental knowledge on the molecular mechanisms by which (a) ribose-1-phosphate, produced by purine nucleoside phosphorylase acting catabolically, is either anabolized for pyrimidine salvage and 5-fluorouracil activation, with uridine phosphorylase acting anabolically, or recycled for nucleoside and base interconversion; (b) the nucleosides can be regarded, both in bacteria and in eukaryotic cells, as carriers of sugars, that are made available though the action of nucleoside phosphorylases. In bacteria, catabolism of nucleosides, when suitable carbon and energy sources are not available, is accomplished by a battery of nucleoside transporters and of inducible catabolic enzymes for purine and pyrimidine nucleosides and for pentose phosphates. In eukaryotic cells, the modulation of pentose phosphate production by nucleoside catabolism seems to be affected by developmental and physiological factors on enzyme levels." @default.
- W2008403967 created "2016-06-24" @default.
- W2008403967 creator A5029895526 @default.
- W2008403967 creator A5039831914 @default.
- W2008403967 creator A5050957257 @default.
- W2008403967 creator A5069200792 @default.
- W2008403967 creator A5072944073 @default.
- W2008403967 date "2006-03-01" @default.
- W2008403967 modified "2023-10-12" @default.
- W2008403967 title "Pentose phosphates in nucleoside interconversion and catabolism" @default.
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