Abstract
The MAP kinase Hog1 transiently accumulates in the nucleus upon activation. Although Hog1 nuclear export correlates with its dephosphorylation, we find that dephosphorylation is not necessary for export. Unexpectedly, a strain lacking the nuclear protein tyrosine phosphatase, Ptp2, showed decreased Hog1 nuclear retention, while a strain lacking the cytoplasmic Ptp3 showed prolonged Hog1 nuclear accumulation, consistent with Ptp2 being a nuclear tether for Hog1 and Ptp3 being a cytoplasmic anchor. In support of this result PTP2overexpression sequestered Hog1 in the nucleus while PTP3overexpression restricted Hog1 to the cytoplasm. Thus, Ptp2 and Ptp3 regulate Hog1 localization by binding Hog1.
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Dates
Type | When |
---|---|
Created | 3 years, 9 months ago (Nov. 14, 2021, 10:31 p.m.) |
Deposited | 3 years, 9 months ago (Nov. 14, 2021, 10:32 p.m.) |
Indexed | 1 month ago (July 23, 2025, 8:38 a.m.) |
Issued | 25 years, 3 months ago (May 15, 2000) |
Published | 25 years, 3 months ago (May 15, 2000) |
Published Online | 25 years, 3 months ago (May 15, 2000) |
Published Print | 25 years, 3 months ago (May 15, 2000) |
@article{Mattison_2000, title={Two protein tyrosine phosphatases, Ptp2 and Ptp3, modulate the subcellular localization of the Hog1 MAP kinase in yeast}, volume={14}, ISSN={1549-5477}, url={http://dx.doi.org/10.1101/gad.14.10.1229}, DOI={10.1101/gad.14.10.1229}, number={10}, journal={Genes & Development}, publisher={Cold Spring Harbor Laboratory}, author={Mattison, Christopher P. and Ota, Irene M.}, year={2000}, month=may, pages={1229–1235} }