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Most inducible expression vectors for the budding yeast Saccharomyces cerevisiae are based on galactose-inducible promoters. Yeast has been increasingly used to study vertebrate steroid receptors because of its powerful genetics. In principle, both regulatory systems are compatible and can be combined in the same strain. However, we found that commercial galactose can be contaminated by bioactive...
Overexpression of c-Abl tyrosine kinase can be growth inhibitory in certain fibroblast cell lines. Using a series of conditional chimeras between Abl and Src, we have now further dissected the Abl protein to determine which domains are required for this function. We found that growth inhibition, unlike transformation by oncogenic forms of Abl, is dependent on the presence of the cognate SH2 and...
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