Evidence continues to point to the anticancer properties of fresh garlic extracts, aged garlic, garlic oil, and anumberof specificorganosulfur compoundsgeneratedbyprocessinggarlic. Theseanticarcinogenicandantitumorigenic characteristics appear to arise through both doseand temporal-related changes in a number of cellular events involved with the cancer process, including those involving drug me...

Slurry acidification using sulfuric acid reduces ammonia emissions but also affects sulfur (S) cycling. Emission of sulfur is a source of malodor and reduces the sulfur fertilizer value of the slurry. We investigated the effect of sulfate and methionine amendments, alone or in combination with acidification, on sulfur transformations in slurry and emissions of volatile sulfur compounds (VSC) du...

Acidithiobacillus caldus is an extremely acidophilic, moderately thermophilic, chemolithoautotrophic gammaproteobacterium that derives energy from the oxidation of sulfur and reduced inorganic sulfur compounds. Here we present the draft genome sequence of Acidithiobacillus caldus ATCC 51756 (the type strain of the species), which has permitted the prediction of genes for survival in extremely a...

Aminomethylated Beaucage's reagent 1 was found to be more potent than 3H-1,2-benzodithiol-3-one 1,1-dioxide (Beaucage's reagent) in causing DNA cleavage. The current study demonstrated the importance of the amino functionality in enhancing DNA-cleaving activities, and such findings may facilitate development of novel sulfur-containing DNA-cleaving molecules in cancer therapy.

We investigated the biodesulfurization potential of a mixed culture AK6 enriched from petroleum hydrocarbons-polluted soil with dibenzothiophene (DBT) as a sulfur source. In addition to DBT, AK6 utilized the following compounds as sulfur sources: 4-methyldibenzothiophene (4-MDBT), benzothiophene (BT), and 4,6- dimethyldibenzothiophene (4,6-DM-DBT). None of these compounds supported the growth o...

In this ‘feasibility study’ the influence of roasting on the sulfur speciation in Mexican coffee beans was investigated by sulfur K-XANES spectroscopy. Spectra of green and slightly roasted beans could be fitted to a linear combination of ‘standard’ reference spectra for biological samples, whereas longer roasting obviously involves formation of additional sulfur compounds in considerable amounts.

Fungi are well known for their metabolic versatility, whether it is the degradation of complex organic substrates or the biosynthesis of intricate secondary metabolites. The vast majority of studies concerning fungal metabolic pathways for sulfur assimilation have focused on conventional sources of sulfur such as inorganic sulfur ions and sulfur-containing biomolecules. Less is known about the ...

要約:システインパースルフィドなどの活性イオウ分 子種は,チオール基に過剰にイオウ原子が付加したポ リスルフィド構造を有する化合物であり,通常のチ オール化合物に比べ,高い求核性と抗酸化活性を有し ている.近年,ポリスルフィドは,システインやグル タチオンなどの低分子チオール化合物だけでなく,タ ンパク質中のシステイン残基にも多く存在し,細胞内 の様々なタンパク質がポリスルフィド化されているこ とが明らかになってきた.タンパク質中のシステイン チオール基は,活性酸素や親電子物質によりもたらさ れる酸化ストレスのセンサーとして重要な役割を果た していることが知られており,ポリスルフィド化はタ ンパク質機能制御を介したレドックスシグナル伝達メ カニズムとして,細胞機能制御に関与することが予想 される.しかしながら,複雑な化学特性を有するポリ スルフィドは検出が難しいことから,生体内におけ...

i Work was performed to determine the possible effectiveness of sulfur-containing fuel additives as contrail suppressents. Such suppression would require production of significant levels of sulfur trioxide, a known suppressent, in the exhaust. A model combustor capable of simulating turbojet operation at 40,000 feet was designed and built, and a gas sampling and analysis procedure developed for...

We present fully reactive interatomic potentials for systems containing gold, sulfur, carbon, and hydrogen, employing the ReaxFF formalism. The potential is designed especially for simulating gold-thiol systems and has been used for studying cluster deposition on self-assembled monolayers. Additionally, a large number of density functional theory calculations are reported, including molecules c...