PP2A — Nicotiana attenuata

Summary

A4A49_63802 (PP2A) in coyote tobacco (Nicotiana attenuata) encodes a protein with protein phosphatase activity (EC 3.1.3.16), belonging to the PPA2-like and calcineurin-like phosphoprotein phosphatase families. It is associated with protein phosphatase binding and regulator activity, kinase binding, and metal binding. The gene is linked to diverse biological processes including TOR signaling, autophagy, stomatal closure, negative regulation of leaf senescence, regulation of nitrogen utilization, primary root development, and downregulation of seed germination. It localizes to the PP2A complex, nucleolus, cytosol, cytoplasm, and nucleus. Associations with traits include root mass density, seed maturation, seed dormancy, leaf senescence, stomatal opening, drought tolerance, and plant growth and development. Phenotypic connections include short primary root with disrupted root tip organization, altered ABA sensitivity, seed size, and leaf size. Studies of related genes in other species link the family to protein phosphorylation, potassium uptake, and plant growth.