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  • Title: Cloning of a new FLO gene from the flocculating Saccharomyces cerevisiae IM1-8b strain.
    Author: Sieiro C, Reboredo NM, Blanco P, Villa TG.
    Journal: FEMS Microbiol Lett; 1997 Jan 01; 146(1):109-15. PubMed ID: 8997714.
    Abstract:
    A flocculation conferring gene was cloned from a genomic library of the flocculating strain Saccharomyces cerevisiae IM1-8b as a 5 kb DNA fragment. The shortest DNA fragment (XbaI-XbaI) able to confer the flocculating phenotype was 3.1 kb. Southern analysis revealed that this gene was not homologous to the already reported FLO1 gene since strong hybridization signals were obtained when chromosomes IV and XII were probed with a digoxygenin-labelled fragment and no signal at all was detected for chromosome I. Partial sequencing data unequivocally ascribed the cloned fragment to chromosome XII. The gene was detected in a variety of S. cerevisiae strains regardless of their being phenotypically flocculating. This gene which, we propose as FLO2, is able to complement the flo1 mutation and is suppressed by suppressors (fsu3) that do not affect other FLO genes.
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