Although biotin is required for the synthesis of the inducible malic enzyme in Lactobacillus arabinosus 17-5 (I), partially purified preparations of the enzyme do not contain biotin (a), and avidin does not affect the activity of the enzyme (3). The formation of another enzyme, ornithine transcarbamylase, in iStreptococcus Zactis 8039 is also diminished by a biotin deficiency (4), but purified ...

Two variant glycopeptide constituents of an hepatic membrane protein responsible for the clearance of circulating asialoglycoproteins have been isolated and characterized. Their relative abundance has been estimated to be 14 and 2 mol, respectively, per mol of intact protein. The larger component, glycopeptide I, is comprised of sialic acid, galactose, mannose, glucosamine, and aspartic acid in...

AIM The quest to identify an accurate method of age estimation, had lead to the evaluation of aspartic acid racemisation in hard tissues of the human remains using high performance liquid chromatography (HPLC). Our study is aimed at the applicability of the racemisation technique to use dentin as the sample to estimate the age in South Indian sub-population. MATERIALS AND METHODS Thirty-six n...