For around two decades, artificial snow has been used by numerous winter sports resorts to ensure good snow cover at low altitude areas or more generally, to lengthen the skiing season. Biological additives derived from certain bacteria are regularly used to make artificial snow. However, the use of these additives has raised doubts concerning the potential impact on human health and the environment.
View Article and Find Full Text PDFHeterotrimeric Go proteins have recently been described as regulators of vesicular traffic. The Goalpha gene encodes, by alternative splicing, two Goalpha polypeptides, Go1alpha and Go2alpha. By immunofluorescence and electron microscopy, we detected Go1alpha on the membrane of small intracellular vesicles in C6 glioma cells.
View Article and Find Full Text PDFThe movement of proteins between compartments of the exocytic and endocytic pathways of eukaryotic cells is mediated by carrier vesicles. They bud from a donor compartment and are targetted to and fuse with the acceptor compartment. GTPases, proteins which bind and hydrolyze GTP, play key roles in the regulation of this vesicular protein transport.
View Article and Find Full Text PDF