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Reference: Julius D, et al. (1984) Glycosylation and processing of prepro-alpha-factor through the yeast secretory pathway. Cell 36(2):309-18

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Abstract

Events in the synthesis and processing of prepro-alpha-factor have been assessed with the aid of mutants blocked at various stages in the yeast secretory pathway. In normal cells treated with tunicamycin, a precursor accumulates which is identical in molecular weight to the primary translation product synthesized in vitro. At the restrictive temperature in a mutant blocked early in the pathway (sec53), a molecule of similar molecular weight accumulates. In mutants affecting translocation into (sec59) and passage from (sec 18) the endoplasmic reticulum, a glycosylated form of the precursor containing three N-linked core oligosaccharides accumulates; however, it appears that the signal peptide is not removed. The glycosylated precursor first experiences proteolytic processing when accumulated in a mutant (sec7) blocked at the stage of the Golgi apparatus. Substantially greater amounts of the mature pheromone are seen in mutants that accumulate secretory vesicles (sec1, sec2, sec3, sec5).

Reference Type
Journal Article
Authors
Julius D, Schekman R, Thorner J
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