SEPARATION OF ENZYMATIC ACTIVITIES TOWARD CHLOROACETYLALANINE, CHLOROACETYLALANYLGLYCINE, AND GLYCYLALANINE

the effects of cooperative versus individual directed reading thinking activities on students inferential and referential questions

two groups of students were assigned as experimental and control ones, and were given instruction on directed reading-thinking activities and after some treatment, they were post-tested. although the initial pre-test did not show any significant differences, the final post-test result revealed that the cooperative reading comprehension helped the experimental group. the cooperative students’...

GRP94-associated Enzymatic Activities

GRP94 (gp96), which performs established functions as a molecular chaperone and immune system modulator, has been reported to display a number of intrinsic enzymatic activities, including ATP hydrolysis, protein phosphorylation, and aminopeptidase. In observing that GRP94 co-purified with bacterial -galactosidase through multiple chromatographic steps, we have examined the hypothesis that the r...

Enzymatic activities of Sir2 and chromatin silencing.

Heritable domains of generalized repression are a common feature of eukaryotic chromosomes and involve the assembly of DNA into a silenced chromatin structure. Sir2, a conserved protein required for silencing in yeast, has recently been shown to couple histone deacetylation to cleavage of a high-energy bond in nicotinamide adenine dinucleotide (NAD) and the synthesis of a novel product, O-acety...

Changes in Total Phenol and Some Enzymatic and Non-Enzymatic Antioxidant Activities of Rose-scented Geranium (Pelargonium graveolens) in Response to Exogenous Ascorbic Acid and Iron Nutrition

Strong antioxidant activity of Pelargonium graveolens is well known. The question addressed in this study was whether different concentrations of exogenous ascorbic acid (AsA) and iron (Fe) were able to influence antioxidant activity and total phenol content (TPC) of geranium. Thus, three levels of Fe (0, 20 and 40 µM) and three levels of AsA (0, 1 and 2 mM) in nutrient solution were c...

Study on Frequency, Aetiology and Some Enzymatic Activities of Subclinical Ovine Mastitis in Urmia