Thin-layer chromatography of purine bases and deoxyribonucleoside analogues. IV
โ Scribed by R. Cardinaud
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 277 KB
- Volume
- 154
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
โฆ Synopsis
In a study of the specificity of Laciobacillvs helveticus nucleoside deoxyribosyltrqnsferasel, it was observed that 5-aminoimidazoIe carboxamide was a sub&a&, showing that apart from the imidazole ring a complete fused six-membered ring was not necessary. On the other hand, imidazole did not react, sugestig a role for some substituents at the 4 and/or 5-position in imidazole. In krther studies on the specificity of nucleoside deoxyribosyltransferase I and II, we measured the RF valuqs of a new series of purine analogues and imidazole derivatives in the six developing solvents already used in our previous studies3. The RF values of nine newly synthesized deoxyribonuckosides were also measured. ExPERrMENTAL Materials Most of the analogues were commercial compounds purchased from 'Aldrich (Milwaukee, Wk.
๐ SIMILAR VOLUMES
A number of reports have appeared concerning separation of purine and pyrimidine nucleosides and nucleotides by thin-layer chromatography (TLC) on polyethyleneimine (PEI) cellulose l--6. These represent modifications of the basic techniqu'es developed by Randerath and Randerath'-g who first employed
Methods of qualitative analysis of organic base polythionates are described. Paper electrophoresis in the 0.05 M triethylammonium bicarbonate buffer with a pH of 7.5 permits the analysis of polythionates of organic and inorganic bases. In this case, large amounts of colloidal sulphur and halogens do