Ser/Thr protein kinase involved in salt tolerance%3B funtions in regulation of Trk1p-Trk2p potassium transporter%3B overexpression affects the Fe-S and lipoamide containing proteins in the mitochondrion%3B required for lipoylation of Lat1p%2C Kgd2p and Gcv3p%3B partially redundant with Hal5p%3B has similarity to Npr1p%3B localizes to the cytoplasm and mitochondrion