Method and use of Recycled [35S]Sulphate in metabolic labelling
β Scribed by R. F. Sewell; P. E. C. Brenchley; N. P. Mallick
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- French
- Weight
- 242 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0022-2135
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β¦ Synopsis
Efficiency of [35S]sulphate incorporation into macromolecules in metabolic labelling experiments has been uniformly poor, 0 . 0 0 0 5 -
0. 35% ( 1 -6 ) .
A procedure is described for recovering approximately 90% of the unused [35S]sulphate from such a labelling experiment in a form in which it can be used again, thus improving (asymptotic) incorporation efficiency up to tenfold.
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The incorporation of [asSJ-sulphate was followed into washed-cell suspensions of Nitrobacter agilis. Thus, bound sulphate, sulphite, sulphide, cysteine, glutathione, homocysteine, methionine and taurine were detected in the ethanolsoluble fraction as well as in the residual hydrolysed fraction. The
## Abstract DLβ[2β^14^C]Octanβ2βsulPhate was prepared by sulphating DLβ[2β^14^C]octanβ2βol with pyridineβSO~3~ adduct. Synthesis of the DLβ[2β^14^C]alkanol started with carboxylation of hexyl magnesium bromide with ^14^CO~2~. Subsequent methylation with diazomethane and reduction of the ester with