Ontology highlight
ABSTRACT:
SUBMITTER: Halfter U
PROVIDER: S-EPMC16309 | biostudies-literature | 2000 Mar
REPOSITORIES: biostudies-literature
Halfter U U Ishitani M M Zhu J K JK
Proceedings of the National Academy of Sciences of the United States of America 20000301 7
The Arabidopsis thaliana SOS2 and SOS3 genes are required for intracellular Na(+) and K(+) homeostasis and plant tolerance to high Na(+) and low K(+) environments. SOS3 is an EF hand type calcium-binding protein having sequence similarities with animal neuronal calcium sensors and the yeast calcineurin B. SOS2 is a serine/threonine protein kinase in the SNF1/AMPK family. We report here that SOS3 physically interacts with and activates SOS2 protein kinase. Genetically, sos2sos3 double mutant anal ...[more]