Pentose sugar. For the pentose sugar ring, Fig. 1.5B depicts the structure of sugar found in nucleic acids. The difference between DNA and RNA lies in the C-2′-position of the ribose sugar ring. In RNA, the carbon at the C-2 position is attached to a hydroxyl (OH) group.

Jun 5, 2011 · It is a naturally occurring pentose (C5) sugar alcohol [40] and has important applications in food and pharmaceutical industries. Xylitol is best known for its sweetening capacity, which exceeds that of sucrose and is an excellent artificial sweetener that is now used widely by the confectionary industry.

Mixed Sugar Fermentation by Clostridia and Metabolic Engineering for Butanol Production. T.C. Ezeji, ... N. Qureshi, in Biorefineries, 2014. 9.4 Perspectives. A good number of bacteria can metabolize both pentose and hexose sugars for growth and the production of diverse chemicals. However, most bacteria first use glucose as the preferred ...

Dec 1, 2011 · Additionally, the better elucidation of pentose sugars transport at the molecular level and characterization of kinetic and regulatory properties, including quorum-sensing mechanisms, should be given high priority because it may provide the basis for developing improved strains that can simultaneously utilize pentose and hexose sugars released ...

Pentose is a 5-carbon sugar involved in the pentose phosphate pathway, which generates NADPH and intermediates for anabolic reactions like nucleic acid synthesis. AI generated definition based on: Handbook of Clinical Neurology, 2013

D-ribose, a pentose monosaccharide naturally produced by the human body and not found in food sources, L-lyxose also is a pentose monosaccharide, a C-2 carbon epimer of the sugar xylose. Sucrose generally known as table sugar, a disaccharide composed of two monosaccharides glucose and fructose while malic acid, an organic compound, a ...

Pentose phosphate pathway. The PPP is a multienzyme pathway that shares a common starting molecule with glycolysis, glucose-6-phosphate (Figure 2). The PPP gives rise to several critical products for cancer metabolism, including a pentose (5-carbon sugar), ribose-5-phosphate. Ribose-5-phosphate is a precursor for the synthesis of nucleotides ...

Dec 15, 2024 · Here, apple fruit inoculated with the ΔPePacC strain were used to (1) observe the development of rot in the fruit and measure the total soluble solids (TSS) and pH of the rot zone, (2) measure the gene expression and enzyme activity related to sucrose metabolism and TSS, fructose, glucose, and sucrose content in various zones of the infected fruit, (3) determine the …

A nucleotide combines a nucleobase, a pentose sugar (ribose or deoxyribose), and at least one phosphate group. IMP is the disodium salt of inosinic acid (Figure 2), which has an important role in metabolism. It is formed by the deamination of adenosine monophosphate (AMP).

The main pentose sugar in most biomass is xylose (d-xylose) (Table 9.2) and metabolic engineering of the yeast has therefore aimed at enabling xylose fermentation in S. cerevisiae (reviewed by, e.g., Almeida et al., 2011; Van Vleet and Jeffries, 2009; Matsushika et al., 2009; Hahn-Hägerdal et al., 2007). There are two main options to introduce ...