Zobrazeno 1 - 10
of 45
pro vyhledávání: '"John I. Toohey"'
Autor:
John I. Toohey, Arthur J. L. Cooper
Publikováno v:
Molecules, Vol 19, Iss 8, Pp 12789-12813 (2014)
The understanding of sulfur bonding is undergoing change. Old theories on hypervalency of sulfur and the nature of the chalcogen-chalcogen bond are now questioned. At the same time, there is a rapidly expanding literature on the effects of sulfur in
Externí odkaz:
https://doaj.org/article/e4cd9b2785734ada9bffa960eddcf5d3
Autor:
John I. Toohey
Publikováno v:
Molecules, Vol 19, Iss 6, Pp 8334-8349 (2014)
The relationship of sulfur amino acids to diet-induced fatty liver was established 80 years ago, with cystine promoting the condition and methionine preventing it. This relationship has renewed importance today because diet-induced fatty liver is rel
Externí odkaz:
https://doaj.org/article/b91aedaa8d4e4660b321aa21c3a426b2
Autor:
John I. Toohey
Publikováno v:
Molecules, Vol 22, Iss 4, p 582 (2017)
Evidence from several fields of investigation lead to the hypothesis that the sulfur atom is involved in vitamin B12-dependent methyl group transfer. To compile the evidence, it is necessary to briefly review the following fields: methylation, the ne
Externí odkaz:
https://doaj.org/article/01f96d9438b44257a095c8b0eebc54b8
Autor:
John I. Toohey
Publikováno v:
Analytical Biochemistry. 413:1-7
Autor:
John I. Toohey
Publikováno v:
Connective Tissue Research. 49:57-61
Hyperhomocysteinemia causes connective tissue pathology. Several theories on the mechanism of homocysteine toxicity in connective tissue are reviewed briefly. A possible new mechanism was revealed recently in the discovery of a reaction in which homo
Autor:
John I. Toohey
Publikováno v:
Journal of Inorganic Biochemistry. 49:189-199
Hydrosulfide ion displaces OH − or CN − from cobalamin or cobinamide to give stable, brown-colored derivatives containing Co(II). Absorption maxima are at 270, 350, 415, and 528 nm for the cobalamin derivative and at 263, 330, and 434 nm for the
Autor:
John I. Toohey
Publikováno v:
AIDS research and human retroviruses. 25(11)
Numerous reports have documented disturbances of sulfur metabolism in AIDS patients. There is a generalized loss of sulfur from the body, measured as cysteine and glutathione. The enzyme, cystathionase, has been shown to be greatly decreased in the l
Autor:
John I. Toohey
Publikováno v:
Cancer letters. 263(2)
Three discoveries together point the way to a potential treatment for cancer. In 1982, Poydock and colleagues found that dehydroascorbic acid has the remarkable ability to eliminate the aggressive mouse tumours, L1210, P388, Krebs sarcoma, and Ehrlic
Autor:
John I. Toohey
Publikováno v:
BioFactors (Oxford, England). 26(1)
The mechanism by which Vitamin B12 prevents demyelination of nerve tissue is still not known. The evidence indicates that the critical site of B12 function in nerve tissue is in the enzyme, methionine synthase, in a system which requires S-adenosylme
Autor:
John I. Toohey
Publikováno v:
Nature Reviews Molecular Cell Biology. 13:803-803
In a recently published Review article (H2S signalling through protein sulfhydration and beyond. Nature Rev. Mol. Cell Biol. 13, 499–507 (2012))1, Paul and Snyder use the term 'sulfhydration' to define a protein modification involving hydrogen sulf