Sulphur metabolism

Sulphur Metabolism of Yeast.

Two general conclusions are warranted as to the sulphur metabolism and nutrition in animals. The first is that although most of the sulphur taken into the system is in the reduced form, that is, mainly as cystine or possibly also as cysteine, nevertheless the main end product of normal sulphur metabolism is the completely oxidized sulphate form. This is well established by numerous investigatio...

The metabolism of sulphapyridine containing radioactive sulphur in the rabbit.

This paper records a further stage in the attempt to draw up a balance sheet for the fate ofa single dose of sulphapyridine in the rabbit. Bray, Neale & Thorpe (1946) found that a considerable proportion ofa dose of sulphapyridine could not be accounted for in rabbit urine by methods of estimation based upon the diazo reaction, especially at higher dose levels (0-5--0 g./kg.). We were unable si...

Some effects of sulphur intake on molybdenum metabolism in sheep.

1. To investigate the effects of sulphur intake on molybdenum metabolism in sheep, ewes were given intakes of 0.3 or 3.5 mg Mo and 0.98, 1.33, 1.73 or 3.23 g S/d in a 2x4 factorial experiment with two replicates lasting 35 d. 99Mo with 0.1 mg carrier Mo was infused intravenously for the last 14 d and, when 99Mo concentrations in urine and faeces had attained plateaux (days 11-14), stable Mo and...

A yeast with unusual sulphur amino acid metabolism.

A yeast strain highly resistant to propargylglycine (an inhibitor of cystathionine gamma-lyase) was isolated from air. It was partially characterized, but it has not been identified with any known yeast species. Its sulphur amino acid metabolism differed from that of other fungi by the lack of the reverse transsulphuration pathway from methionine to cysteine, as no activity of cystathionine bet...

Molecular biology and physiology of sulphur metabolism of Schizosaccharomyces pombe