Studies on 5-hydroxyuridine (isobarbituridine): X. Isolation and tentative identification of 5-hydroxymethyluridine from ribosomal RNA. 1975

A W Lis, and R K Mclaughlin, and D I Mclaughlin

Yeast ribosomal RNA was hydrolyzed to its constituent nucleosides with the aid of snake venom and bacterial alkaline phosphatase. Lyophilized hydrolysate was labeled with radioactive 5-hydroxyuridine and applied to partition chromatography. It was found that some components of rRNA are held on the column and can be eluted with water. Eighty-nine percent of the label, a large portion of cytidine, and several unidentified compounds were found in the water wash. The direct application of the wash concentrate to ascending paper chromatography in saturated butanol-H2O resulted in the separation of three distinct UV-absorbing bands. Further resolution and characterization of one band of unidentified material revealed the presence of an additional nucleoside. On the basis of chromatographic and electrophoretic behavior and UV-absorption spectra, it was tentatively identified as 5-hydroxymethyluridine.

UI MeSH Term Description Entries
D002621 Chemistry A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D002854 Chromatography, Paper An analytical technique for resolution of a chemical mixture into its component compounds. Compounds are separated on an adsorbent paper (stationary phase) by their varied degree of solubility/mobility in the eluting solvent (mobile phase). Paper Chromatography,Chromatographies, Paper,Paper Chromatographies
D004586 Electrophoresis An electrochemical process in which macromolecules or colloidal particles with a net electric charge migrate in a solution under the influence of an electric current. Electrophoreses
D006868 Hydrolysis The process of cleaving a chemical compound by the addition of a molecule of water.
D012335 RNA, Ribosomal The most abundant form of RNA. Together with proteins, it forms the ribosomes, playing a structural role and also a role in ribosomal binding of mRNA and tRNAs. Individual chains are conventionally designated by their sedimentation coefficients. In eukaryotes, four large chains exist, synthesized in the nucleolus and constituting about 50% of the ribosome. (Dorland, 28th ed) Ribosomal RNA,15S RNA,RNA, 15S
D013056 Spectrophotometry, Ultraviolet Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Ultraviolet Spectrophotometry
D014529 Uridine A ribonucleoside in which RIBOSE is linked to URACIL. Allo-Uridine,Allouridine,Allo Uridine
D055598 Chemical Phenomena The composition, structure, conformation, and properties of atoms and molecules, and their reaction and interaction processes. Chemical Concepts,Chemical Processes,Physical Chemistry Concepts,Physical Chemistry Processes,Physicochemical Concepts,Physicochemical Phenomena,Physicochemical Processes,Chemical Phenomenon,Chemical Process,Physical Chemistry Phenomena,Physical Chemistry Process,Physicochemical Phenomenon,Physicochemical Process,Chemical Concept,Chemistry Process, Physical,Chemistry Processes, Physical,Concept, Chemical,Concept, Physical Chemistry,Concept, Physicochemical,Concepts, Chemical,Concepts, Physical Chemistry,Concepts, Physicochemical,Phenomena, Chemical,Phenomena, Physical Chemistry,Phenomena, Physicochemical,Phenomenon, Chemical,Phenomenon, Physicochemical,Physical Chemistry Concept,Physicochemical Concept,Process, Chemical,Process, Physical Chemistry,Process, Physicochemical,Processes, Chemical,Processes, Physical Chemistry,Processes, Physicochemical

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