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• W1941728487 endingPage "8027" @default.
• W1941728487 startingPage "8016" @default.
• W1941728487 abstract "ABSTRACT The RHO1 gene encodes a yeast homolog of the mammalian RhoA protein. Rho1p is localized to the growth sites and is required for bud formation. We have recently shown that Bni1p is one of the potential downstream target molecules of Rho1p. The BNI1 gene is implicated in cytokinesis and the establishment of cell polarity in Saccharomyces cerevisiae but is not essential for cell viability. In this study, we screened for mutations that were synthetically lethal in combination with a bni1 mutation and isolated two genes. They were the previously identified PAC1 and NIP100 genes, both of which are implicated in nuclear migration in S. cerevisiae . Pac1p is a homolog of human LIS1, which is required for brain development, whereas Nip100p is a homolog of rat p150 Glued , a component of the dynein-activated dynactin complex. Disruption of BNI1 in either the pac1 or nip100 mutant resulted in an enhanced defect in nuclear migration, leading to the formation of binucleate mother cells. The arp1 bni1 mutant showed a synthetic lethal phenotype while the cin8 bni1 mutant did not, suggesting that Bni1p functions in a kinesin pathway but not in the dynein pathway. Cells of the pac1 bni1 and nip100 bni1 mutants exhibited a random distribution of cortical actin patches. Cells of the pac1 act1-4 mutant showed temperature-sensitive growth and a nuclear migration defect. These results indicate that Bni1p regulates microtubule-dependent nuclear migration through the actin cytoskeleton. Bni1p lacking the Rho-binding region did not suppress the pac1 bni1 growth defect, suggesting a requirement for the Rho1p-Bni1p interaction in microtubule function." @default.
• W1941728487 created "2016-06-24" @default.
• W1941728487 creator A5003085960 @default.
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• W1941728487 date "1999-12-01" @default.
• W1941728487 modified "2023-10-11" @default.
• W1941728487 title "Bni1p Regulates Microtubule-Dependent Nuclear Migration through the Actin Cytoskeleton in <i>Saccharomyces cerevisiae</i>" @default.
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• W1941728487 doi "https://doi.org/10.1128/mcb.19.12.8016" @default.
• W1941728487 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/84886" @default.
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