GCN2 — Nicotiana attenuata

Summary

A4A49_52637 (GCN2) on chromosome 7 of coyote tobacco (Nicotiana attenuata) encodes a eukaryotic translation initiation factor 2alpha kinase, possessing protein serine/threonine kinase, protein tyrosine kinase, and ATP-binding activities. The gene is associated with translation initiation and protein synthesis, as well as responses to UV-C, wounding, and cadmium. It is linked to abscisic acid (ABA) signaling and anabolism, stomatal closure, seed germination, and cortical microtubule organization. Localization evidence connects the product to the cytosol, cytoplasm, nucleus, and cortical microtubules. Associations with drought tolerance, leaf relative water content, chlorophyll content, abscisic acid content, and stomatal opening have been noted.