Multiple transduction pathways regulate the sodium-extrusion gene PMR2/ENA1 during salt stress in yeast.

Abstract:

:The yeast PMR2/ENA1 gene encodes an ATPase involved in sodium extrusion and induced by NaCl. At low salt concentrations (0.3 M) induction is mediated by the HOG-MAP kinase pathway, a system activated by non-specific osmotic stress. At high salt concentrations (0.8 M) induction is mediated by the protein phosphatase calcineurin and is specific for sodium. Protein kinase A and Sis2p/Hal3p modulate PMR2/ENA1 expression as negative and positive factors, respectively but Sis2p/Hal3p does not participate in the transduction of the salt signal. Salt stress decreases the level of cAMP and the resulting decrease in protein kinase A activity may contribute to HOG-mediated induction.

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Márquez JA,Serrano R

doi

10.1016/0014-5793(96)00157-3

subject

Has Abstract

pub_date

1996-03-11 00:00:00

pages

89-92

issue

1-2

eissn

0014-5793

issn

1873-3468

journal_volume

382

pub_type

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