Kinetic and NMR spectroscopic study of the chemical stability and reaction pathways of sugar nucleotides. (10th December 2020)

• Record Type: Journal Article
• Authors: Jaakkola, Juho; Nieminen, Anu; Kivelä, Henri; Korhonen, Heidi; Tähtinen, Petri; Mikkola, Satu
• Is Part Of: Nucleosides, nucleotides & nucleic acids. Volume 40:Number 2(2021)
• Page Start: 178
• Page End: 193
• Publication Date: 2020-12-10
• Subjects: Sugar nucleotide -- biological phosphate -- chemical stability -- NMR; Nucleosides -- Periodicals; Nucleotides -- Periodicals; Nucleic acids -- Periodicals; 572.8
• DOI: 10.1080/15257770.2020.1856870
• Languages: English
• ISSNs: 1525-7770

Abstract

Abstract: The alkaline cleavage of two types of sugar nucleotides has been studied by 1 H and 31 P NMR in order to obtain information on the stability and decomposition pathways in aqueous solutions under alkaline conditions. The reaction of glucose 1-UDP is straightforward, and products are easy to identify. The results obtained with ribose 5-UDP and ribose 5-phosphate reveal, in contrast, a more complex reaction system than expected, and the identification of individual intermediate species was not possible. Even though definite proof for the mechanisms previously proposed could not be obtained, all the spectroscopic evidence is consistent with them. Results also emphasise the significant effect of conditions, pH, ionic strength, and temperature, on the reactivity under chemical conditions.