'Guard cell movement is induced by environmental and hormonal signals that cause changes in turgor through changes in uptake or release of solutes and water. Several transporters mediating these fluxes at the plasma membrane have been characterized, however less is known about transport at endomembranes. CHX20, a member of a ... More
Cytosolic Hydroxymethyldihydropterin Pyrophosphokinase/Dihydropteroate Synthase from Arabidopsis thaliana: A SPECIFIC ROLE IN EARLY DEVELOPMENT AND STRESS RESPONSE.
AuthorsStorozhenko S, Navarrete O, Ravanel S, De Brouwer V, Chaerle P, Zhang GF, Bastien O, Lambert W, Rébeillé F, Van Der Straeten D,
JournalJ Biol Chem
PubMed ID17289662
In plants, 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase/7,8-dihydropteroate synthase (mitHPPK/DHPS) is a bifunctional mitochondrial enzyme, which catalyzes the first two consecutive steps of tetrahydrofolate biosynthesis. Mining the Arabidopsis genome data base has revealed a second gene encoding a protein that lacks a potential transit peptide, suggesting a cytosolic localization of the isoenzyme (cytHPPK/DHPS). When ... More