CBL1 — Arabidopsis thaliana

Summary

AT4G17615 (CBL1) encodes a calcineurin B-like protein, a calcium-binding protein with EF-hand domains that also exhibits protein kinase regulator and activator activity, calcium ion binding, and small GTPase binding. In Arabidopsis thaliana, CBL1 is associated with responses to cold, wounding, light, and glucose, as well as pollen germination and zinc homeostasis. It is linked to regulation of potassium transport, sodium transport, nitrate import, phosphorus homeostasis, and responses to flooding and nutrient levels. The protein localizes to the tonoplast, vacuole, chloroplast envelope, root hair tip, and pollen tube. CBL1 has been connected to traits including potassium and sodium content, drought sensitivity, submergence tolerance, leaf chlorophyll content, root system morphology, shoot meristem development, and starch mobilization. Related genes in other species are linked to drought and cold stress tolerance.