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On the formation of rho minus petites in yeast part 1 multi factorial mitochondrial crosses plus rho rho plus involving a mutation conferring temperature sensitivity of rho factor stability


Molecular and General Genetics 149(3): 311-322
On the formation of rho minus petites in yeast part 1 multi factorial mitochondrial crosses plus rho rho plus involving a mutation conferring temperature sensitivity of rho factor stability
The inheritance of an extrakaryotic mutation conferring temperature-sensitive growth on non-fermentable substrates and a high frequency of mutation to rho- was studied in Saccharomyces cerevisiae. Multifactorial crosses were made (rho+ .times. rho+) involving this mutation .**GRAPHIC**. and mitochondrial [mit] mutations conferring resistance to chloramphenicol, erythromycin, oligomycin or paromomycin. Mutation .**GRAPHIC**. was localized on the mitDNA on a new gene locus, TSM1. Locus TSM1 was weakly linked to the locus PAR1 and to the loci RIB1 and RIB3 but unlinked to the locus OLI1. The position of TSM1 was between PAR1 and the 2 closely linked loci RIB1 and RIB3; OLI1 was outside and not linked to the segment PAR-TSM-RIB. Mutation .**GRAPHIC**. did not significantly influence the process of mitochondrial recombination and its control by the mitochondrial locus .omega.


Accession: 006027301



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