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  • Book
    edited by Gilles Montalescot.
    Digital Access Oxford 2008
  • Article
    Gaillardin C, Heslot H.
    Mol Gen Genet. 1979 May 04;172(2):185-92.
    Eight strains devoid of homocitrate synthase activity were found among lysine requiring mutants of the yeast Saccharomycopsis lipolytica. Genetic analysis of these strains showed that they were all affected at the same locus LYS 1. Three lines of evidence suggest that this locus defines a structural gene for homocitrate synthase. First, the mutations show various degrees of intragenic complementation; it could be shown in some cases that the hybrid enzyme formed in vivo displayed modified properties in vitro. Second, reversion of some of these mutations can result in a modified enzyme (desensitized). Third, a feedback mutant of homocitrate synthase was directly isolated from the wild type strain, and shown to carry a single mutation at of near LYS 1. We also present here the first attempts at genetic fine mapping in Saccharomycopsis lipolytica.
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