Tryptophyl-tRNA synthetase is irreversibly inactivated by Procion Brown MX-5BR with an apparent dissociation constant (KD) of 8.8 microM and maximum rate of inactivation k3 0.192 s-1. The specificity of the interaction is supported by two previously reported observations. Firstly, Brown MX-5BR inactivation of tryptophyl-tRNA synthetase is inhibited by substrates, and secondly, the animated deri...

the alginate was extracted with six different methods from iran south seacoast algae, sargassum sp, and the percentage yield of alginate was determined. we divided our methods to two groups including acidic extraction and non-acidic. in acidic methods, hcl and h 2 so 4 were used as a detergent in extraction process and cacl 2 was exerted in non-acidic treatments. all treatments compared with ea...

Cancer is one of the diseases that cause biggest death in world. The research for natural compounds derived from marine very developed at this time, especially algae. Brown algae have more phenolic content than other types algae, T. decurrens Bory brown had taken Indonesian island Dutungan, South Sulawesi. Phenolic groups are also known to be able inhibit growth cancer cells. purpose study isol...

sulfated polysaccharides have shown promising effects on wound healing processes along with many other biological activities. the sulfated polysaccharides extracted from two algae species habitats in persian gulf were studied in vivo for their effects on collagen formation and epidermal regeneration. the polysaccharides were purified from aqueous extracts of p. tetrastromatica and p. boergeseni...

14-aryl- and 14-alkyl-14-h-dibenzo [a,j]xanthenes are prepared from the reaction of aromatic- and aliphaticaldehydes with β-naphthol in the presence of catalytic amounts of 4-dodecylbenzenesulfonic acid(dbsa) as asurfactant-type brønsted acid catalyst in toluene and under solvent-free conditions in excellent yields and shortreaction times. the catalyst was recovered and reused for five successi...

The effect of brown rice with low protein intake was studied in five healthy young men. Feces were weighed, the digestibility of nutrients was determined, and blood tests were made. Each subject followed a diet consisting mainly of polished rice for 14 days and one consisting mainly of brown rice for 8 days. Both diets contained 0.5 g protein per kg of body weight. The brown rice diet had 3 tim...

Rat periovarian adipose tissue contains a low number of uncoupling protein-expressing brown adipocytes scattered into lobules of white fat. Their increase following cold acclimation is matched by a major increase in noradrenergic and neuropeptide Y-, substance P- and calcitonin gene-related peptide-containing nerves. To ascertain whether periovarian fat is provided with sensory nerves, and whet...

Brown adipose tissue and collagenase-isolated brown adipocytes were investigated in rats by means of 1H and 13C nuclear magnetic resonance spectroscopy. After chloroform-methanol extraction of brown adipose tissue, proton and natural abundance 13C spectra of the chloroform fraction showed resonances attributable to triglycerides, and were qualitatively similar to those of the corresponding frac...

Hailer et al. (1) sequenced 14 independent nuclear loci across the genomes of polar (Ursus maritimus), brown (U. arctos), and American black bears (U. americanus). The Bayesian multilocus coalescent approach showed one species tree in which polar bears split from brown bears before the diversification of brown bear lineages. The divergence of polar bears was estimated to have occurred 603 thous...