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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

C. elegans osm-3 gene mediating osmotic avoidance behaviour encodes a kinesin-like protein.

In the nematode Caenorhabditis elegans, mutants in osm-3 gene are known to be defective in osmotic avoidance, chemotaxis and dauer formation behaviours. To study the molecular basis of these pleiotropic defects we have cloned the osm-3 gene by germline transformation of osm-3 (p802) mutants through microinjection of the wild type genomic DNA. Northern analysis reveals a 3.0 kb transcript corresponding to osm-3. DNA sequencing of the transforming 4.3 kb fragment revealed a kinesin heavy chain-like protein, which contains conserved ATPase and microtubule binding domains. Our results are consistent with the previous EM data on osm-3 (p802) mutants that show an accumulation of dense matrix material in the amphid sheath cytoplasm and a shortened distal segment of the amphid channel cilium. These data suggest a kinesin-like role of the osm-3 product in axonal transport.[1]


  1. C. elegans osm-3 gene mediating osmotic avoidance behaviour encodes a kinesin-like protein. Shakir, M.A., Fukushige, T., Yasuda, H., Miwa, J., Siddiqui, S.S. Neuroreport (1993) [Pubmed]
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