GDH* occupies a central role in the metabolism of many microorganisms because it provides a link betweeen carbohydrate and nitrogen metabolism (Smith et al., 1975; Brown et al., 1974). Many simple eukaryotic micro-organisms possess two genetically distinct forms of GDH with different nucleotide specificities, a catabolic role being assigned to the NAD-specific enzyme, whereas the NADP-specific ...

Human antithrombin III has been shown to contain four identical N-glycosidically linked carbohydrate chain per molecule. These carbohydrate chains have been investigated by sugar and methylation analysis before and after removal of N-acetylneuraminic acid residues. The chains have been further investigated by Smith degradation, trifluoroacetolytic degradation, and degradation after chromium tri...

ABSTRACT: In the present study, Persian gum, an exudate gum which secrets from the mountain almond tree (Amygdalus scoparia Spach) from two different regions is evaluated by means of chemical and instrumental analysis (fractionated by solving in water and alkaline solutions at 0.1, 0.5 and 1 M and also Smith degradation) using HPLC, 1H–NMR and 13C–NMR spectroscopy’s. The total sugar and uronic ...

The fate and persistence of diclofop-methyl and diclofop in soil may be influenced by major processes such as chemical and biological degradation. In addition, losses in runoff occur because of its ability to adsorb strongly to soil particles. Up to 15% of diclofop-methyl is hydrolyzed at the time of application and incorporated into the soil, and as much as 85% is hydrolyzed within 24 h of app...

A water soluble polysaccharide, HB-1, with a molecular weight of 23,930, was isolated from radix Ranunculi ternati. by hot water extraction, ethanol precipitation, deproteination，ultrafiltration and gel-filtration column chromatography. Its sugar composition was determined by GLC as Glc, Ara, and Gal in a molar ration of 16.071: 2.722: 1. And the absolute configuration of Glc was identified as ...

Using gel filtration on Sephadex G-100 and column chromatography on CM-cellulose, fractions containing either endogenous acceptor of L-fucose or fucosyltransferase were obtained from human parotid saliva. Hydrolysis with mild acid followed by Smith degradation increased the fucosyltransferase activity of the fractions that contained endogeneous acceptor.

One of the major environmental threats is the least rate of degradation or non biodegradability of the organic materials under natural condition, e.g. plastics. The plastics of various forms such as nylon, polycarbonate, polyethylene-terephthalate, polyethylene, polypropylene, polystyrene, polytetraflouro ethylene, polyurethane and polyvinyl chloride (Smith, 1964) are being continuously used in...

A water soluble polysaccharide, HB-1, with a molecular weight of 23,930, was isolated from radix Ranunculi ternati. by hot water extraction, ethanol precipitation, deproteination，ultrafiltration and gel-filtration column chromatography. Its sugar composition was determined by GLC as Glc, Ara, and Gal in a molar ration of 16.071: 2.722: 1. And the absolute configuration of Glc was identified as ...

This paper extends earlier results of wave based approach for stable force re°ecting systems in the presence of the transmission delay (constant or variable). Theoretically, stability of the whole system is kept for any time delay, but degradation performance increases proportionally with a large delays. In this paper, we propose a new control scheme that is also based on wave variables, but mi...