Synechococcus elongatus PCC 7942 was able to grow with several S sources. The sulphur metabolizing enzymes viz. ATP sulphurylase, cysteine synthase, thiosulphate reductase and L- and D-cysteine desulphydrases were regulated by sulphur sources, particularly by sulphur amino acids and organic sulphate esters. Sulphur starvation reduced ATP sulphurylase and cysteine synthase whereas reduced glutat...

The conjugated iron-sulphur proteins are enzymes that contain iron-sulphur clusters, which are paramagnetic in certain oxidation states. Numerous enzymes of this type have been isolated (Palmer, 1975; Cammack, 1979; Yoch & Carithers, 1979), and whole books have been devoted to them (Lovenberg, 1977; Spiro, 1982). Most of them (aconitase being an exception) are oxidoreductases. By using e.p.r. (...

In this study, the Scots pine (Pinus sylvestris L.) C needles (i.e. the current-year-needles) were used as bioindicators in determining the aerial distribution pattern of sulphur emissions around industrial point sources at Kemi, Northern Finland. The average sulphur concentration in the C needles was 897 mg/kg (d.w.), with a standard deviation of 118 mg/kg (d.w.) and range 740 – 1350 mg/kg (d....

Despite the importance of dimethylsulphoniopropionate (DMSP) in the global sulphur cycle and climate regulation, the biological pathways underpinning its synthesis in marine phytoplankton remain poorly understood. The intracellular concentration of DMSP increases with increased salinity, increased light intensity and nitrogen starvation in the diatom Thalassiosira pseudonana. We used these cond...

Monitoring expression at the transcriptional level is an essential first step for the functional analysis of plant genes. Genes encoding proteins directly involved in sulphur metabolism constitute only a small fraction of all the genes affected by sulphur deficiency stress. Transcriptional responses to various periods of sulphur deprivation have been extensively studied in Arabidopsis thaliana;...

Lithium/sulphur batteries are promising candidates for future energy storage systems, mainly due to their high potential capacity. However low sulphur utilization and capacity fading hinder practical realizations. In order to improve understanding of the system, we investigate Li/S electrode morphology changes for different ageing steps, using X-ray phase contrast tomography. Thereby we find a ...

IT is well known that the human lens is rich in glutathione and that this substance disappears totally from the lens in senile cataract. Glutathione is remarkable in being the most labile sulphur-containing substance in the body. It is, as we know, closely associated with tissue respiration, which assumes special importance in a non-vascular tissue such as the lens. The relation of glutathione ...

in order to evaluate the effect of sulphur fertilizer and nitrogen split application on yield and its components of sunflower (helianthus annuus l .),an experiment was carried out at the research field of birjand faculty of agriculture in 2008 as factorial in complete randomized block design with three replicates.the treatments were sulphur fertilizer in four levels ( 0 , 200 , 400 and 800 kg/h...

The increasing use of fossil fuels has led to increased emissions of sulphur oxides into the air, which is a major cause of acid rain. Legislation already adopted in 2009 stipulates that the maximum level of sulphur allowed in fuels is only 10 ppm. The process of hydrodesulphurization (HDS) used in refineries is based on very expensive physico-chemical techniques, and has limitations in the rem...

E-mail:[email protected] © All Natural Advantage Changing the way we think about treating autism. Sulphate is produced in the body by oxidation of the dietary proteins, methionine or cysteine (both sulphur containing amino acids), which probably provides ~ 80% of the sulphate required in man. Sulphur is the sixth most abundant mineral in breast milk (colostrum has three times more than m...