Results 231 to 240 of about 26,264 (280)
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Ribonucleosides as minor milk constituents
Zeitschrift für Ernährungswissenschaft, 1991Ribonucleosides are minor milk constituents and show a typical pattern which is assumed to be species-specific. As well as the unmodified components adenosine, cytidine, guanosine, inosine, and uridine, modified compounds such as Nl-methyladenosine and N6-carbamoylthreonyladenosine--products of the transfer RNA catabolism--have been identified and ...
F. G. Ott, K.-P. Raezke, E. Schlimme
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Reduction of Ribonucleosides to 2′‐Deoxyribonucleosides
Current Protocols in Nucleic Acid Chemistry, 2005AbstractRibonucleosides are converted into 2′‐deoxyribonucleosides in good yields by a four‐step procedure. Selective protection of the 3′‐ and 5′‐hydroxyl groups with 1,3‐dichloro‐1,1,3,3‐tetraisopropyl‐1,3‐disiloxane is followed by functionalization of the 2′‐hydroxyl group with phenoxythiocarbonyl chloride.
Stanislaw F. Wnuk, Morris J. Robins
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Structure of an imidazoline ribonucleoside
Acta Crystallographica Section C Crystal Structure Communications, 1988fl-D-Ribofuranosyl)-2-oxo-4-imidazoline-4- carboxylic acid dihydrate, C9H12N207.2H20 , Mr= 296.23, monoelinic, P21, a=9.3754(10), b= 5.0542 (4), c = 13.3075 (10) A, t= 103.155 (9) °, V = 614.03 (10) A), Z= 2, Dx= 1.602 gcm -a, Cu Ko., 2= 1.54178 A, /z = 12.175 cm-1; F(000) = 312, T= 295 K, R = 0.0311 for 2458 reflections (F > 4at).
Roland K. Robins +2 more
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Ribonucleoside triphosphatase in rabbit reticulocytes
Archives of Biochemistry and Biophysics, 1966Ribonucleoside triphosphatase in rabbit reticulocytes, discussing distribution in extracts, behavior in purification of amino acid and ...
I.D. Raacke, S. Matsushita, J. Fiala
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Synthesis of Azido and Triazolyl Purine Ribonucleosides
Current Protocols, 2021AbstractHere, we describe detailed synthetic protocols for preparation of 6‐amino/thio‐2‐triazolylpurine ribonucleosides. First, 9‐(2′,3′,5′‐tri‐O‐acetyl‐β‐D‐ribofuranosyl)‐2,6‐diazido‐9H‐purine, to be used as a key starting material, is synthesized in an SNAr reaction with NaN3 starting from commercially available 9‐(2′,3′,5′‐tri‐O‐acetyl‐β‐D ...
Dāgs Dāvis Līpiņš +4 more
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Canadian Journal of Biochemistry, 1965
Several aspects of the metabolism of inosine and uridine by Ehrlich ascites carcinoma cells in vitro have been found to be inhibited by ribonucleoside derivatives of four purine analogues. The synthesis of both inosine and uridine by intact tumor cells was profoundly inhibited in the presence of 6-methylmercaptopurine ribonucleoside.
A. R. P. Paterson, A. I. Simpson
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Several aspects of the metabolism of inosine and uridine by Ehrlich ascites carcinoma cells in vitro have been found to be inhibited by ribonucleoside derivatives of four purine analogues. The synthesis of both inosine and uridine by intact tumor cells was profoundly inhibited in the presence of 6-methylmercaptopurine ribonucleoside.
A. R. P. Paterson, A. I. Simpson
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Partition Chromatography on Starch of Ribonucleosides
Nature, 1948DURING work on ribonucleic acid turnover with nitrogen-15 in this Department, we found it necessary to isolate the different nitrogen-containing substances from small amounts of ribonucleic acid. It was thought that partition chromatography on starch as introduced by Elsden and Synge1 might give a possible solution to our problem. Vischer and Chargaff2
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Engineering Ribonucleoside Triphosphate Specificity in a Thymidylyltransferase
Biochemistry, 2008Nature's glycosylation catalysts, glycosyltransferases, indirectly manipulate and control many important biological processes by transferring sugar nucleotide donors onto acceptors. Challenging chemical synthesis impedes synthetic access to sugar nucleotides and limits the study of many glycosyltransferases.
Jakeman, David L +6 more
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Analytical Biochemistry, 1972
Abstract A paper chromatographic method for the separation of 2′- O -methylated ribonucleosides from nonmethylated and base-methylated ribonucleosides, using paper impregnated with ammonium borate and a butanol/borate developing solvent, is presented.
Adhid Al-Arif, Michael B. Sporn
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Abstract A paper chromatographic method for the separation of 2′- O -methylated ribonucleosides from nonmethylated and base-methylated ribonucleosides, using paper impregnated with ammonium borate and a butanol/borate developing solvent, is presented.
Adhid Al-Arif, Michael B. Sporn
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Interrogating the transcriptome with metabolically incorporated ribonucleosides
Molecular Omics, 2021This review summarizes recent developments in metabolic labeling of RNA to study RNA synthesis and turnover, RNA binding proteins, and RNA modifications and modifying enzymes.
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