22.6: The Oxidation-Reduction Reactions of Monosaccharides
Fischer's train of logic in assigning the configuration of D-glucose. Ribose and arabinose (two well known pentoses) both gave erythrose on Ruff degradation. As expected, Kiliani-Fischer synthesis applied to erythrose gave a mixture of ribose and arabinose. Oxidation of erythrose gave an achiral (optically inactive) aldaric acid.
d-Ribose Catabolism in Archaea: Discovery of a Novel Oxidative …
2020年1月15日 · We show that Haloarcula species utilize d -ribose, which is degraded to α-ketoglutarate via a novel oxidative pathway. Evidence is presented that the oxidative degradation of d -ribose involves novel promiscuous enzymes, pentose dehydrogenase and pentonolactonase, and a novel sugar acid dehydratase highly specific for ribonate.
Ribose - Wikipedia
Ribose is a simple sugar and carbohydrate with molecular formula C 5 H 10 O 5 and the linear-form composition H− (C=O)− (CHOH) 4 −H. The naturally occurring form, d-ribose, is a component of the ribonucleotides from which RNA is built, and so this compound is necessary for coding, decoding, regulation and expression of genes.
Oxidative Pathways of Deoxyribose and Deoxyribonate Catabolism
Using genome-wide mutant fitness assays in diverse bacteria, we identified novel oxidative pathways for the catabolism of 2-deoxy-d-ribose and 2-deoxy-d-ribonate. We propose that deoxyribose is oxidized to deoxyribonate, oxidized to ketodeoxyribonate, and cleaved to acetyl coenzyme A (acetyl-CoA) and glyceryl-CoA.
An Immunohistochemical Analysis to Validate the Rationale …
2014年11月13日 · In this study, LDL was glycated with D-ribose, and it was further used as an immunogen for immunizing NZW female rabbits. The results showed that female rabbits immunized with D-ribose modified LDL induced antibodies as detected by direct binding and competitive ELISA.
Green synthesis of 1,5-dideoxy-1,5-imino-ribitol and 1,5-dideoxy …
2021年8月19日 · In this report, we like to present an efficient and environmentally friendly route for 1,5-dideoxy-1,5-imino-ribitol and 1,5-dideoxy-1,5-imino- l -arabinitol synthesis (Scheme 1) from d -ribose....
Oxidation of D-(-)-Ribose with H2O2 and Lipid Hydroperoxides
1996年12月1日 · ᴅ- (-)-ribose was subjected to oxidation with equimolar amounts of H 2 O 2 /Fe 2+ and 13-hydro-peroxy-9-cis-11-trans-octadecadienoic acid/Fe 2+. Smaller carbohydrates, carbonyl compounds, hydroxy acids and polyols were produced.
Microbial Synthesis of d-Ribose: Metabolic Deregulation and ...
1997年1月1日 · As the efficiency of d-ribose synthesis via microorganisms has increased significantly over the last years, the d-ribose/2-deoxy-d-ribose conversion chemistry might be an interesting research target. d-ribose could, for example, be oxidatively converted into d-ribonolactone in the
TLC of Oxidation Products of D-Ribose and 2-Deoxy-Dribose …
D-Ribose and 2-deoxy-D-ribose were oxidized to 4-keto-D-ribonate and 2-deoxy-4-keto-D-ribonate respectively by oxidative fermentation, and the chemical structures of the oxidation...
D-Ribonic acid was the oxidation derivative of D-ribose produced by pseudo monads (Foster, 1944; Lockwood & Nelson, 1946; Weimberg, 1961). Another oxidation product, D-riburonic acid, was found in the cell wall polysaccharides of Rhizobium meliloti (Amemura et al., 1981). 5-Methylthioribose is a com