EVALUATION OF REASONABILITY OF INTRODUCTION OF THE AIR EMISSIONS AND WASTEWATER RATING BY TOTAL ORGANIC CARBON IN RB

The evaluation of the expediency of the introduction of normalizing in air emissions and waste water by total organic carbon content based on four aspects: peculiarit y of TOC analysis, expressivit y of TOC analysis, the price of instruments and the field of application of TOC analyzers. At the present time using TOC as normalized indicators in water, air, waste and soil in the Republic of Belarus is not appropriate

V Domain of Human SLAM (CDw150) Is Essential for Its Function as a Measles Virus Receptor

Human signaling lymphocytic activation molecule (SLAM; also known as CDw150) has been shown to be a cellular receptor for measles virus (MV). Chinese hamster ovary cells transfected with a mouse SLAM cDNA were not susceptible to MV and the vesicular stomatitis virus pseudotype bearing MV envelope proteins alone, indicating that mouse SLAM cannot act as an MV receptor. To determine the functional domain of the receptor, we tested the abilities of several chimeric SLAM proteins to function as MV receptors. The ectodomain of SLAM comprises the two immunoglobulin superfamily domains (V and C2). Various chimeric transmembrane proteins possessing the V domain of human SLAM were able to act as MV receptors, whereas a chimera consisting of human SLAM containing the mouse V domain instead of the human V domain no longer acted as a receptor. To examine the interaction between SLAM and MV envelope proteins, recombinant soluble forms of SLAM were produced. The soluble molecules possessing the V domain of human SLAM were shown to bind to cells expressing the MV hemagglutinin (H) protein but not to cells expressing the MV fusion protein or irrelevant envelope proteins. These results indicate that the V domain of human SLAM is necessary and sufficient to interact with the MV H protein and allow MV entry