||Genome-wide survey of non-essential genes required for slowed DNA synthesis-induced filamentous growth in yeast.
||Christopher Minkyu Kang, Yi Wei Jiang
||We recently discovered that slowed DNA synthesis induces filamentous differentiation in S. cerevisiae. We screened the BY yeast deletion strains and identified four classes of non-essential genes that are required for both slowed DNA-induced filamentous growth and classic forms of filamentous growth: (a) genes encoding regulators of the actin cytoskeleton and cell polarity, ABP1, CAP2 and HUF1 (=YOR300W), in addition to the previously known BNI1, BUD2, PEA2, SPA2 and TPM1; (b) genes that are likely involved in cell wall biosynthesis, ECM25, GAS1 and PRS3; (c) genes encoding possible regulators of protein secretion, SEC66, RPL21A and RPL34B; (d) genes encoding factors for normal mitochondrial function, IML1 and UGO1. These results showed that pseudohyphal formation involves not the only previously known regulation of the actin cytoskeleton/cell polarity but also regulation of cell wall synthesis, protein secretion and mitochondrial function. Identification of multiple classes of genes that are required for both slowed DNA synthesis-induced and classic forms of filamentous growth confirms that slowed DNA synthesis-induced filamentous growth is bone fide filamentous differentiation.
||Yeast 2005; 22:79-90
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