NPK1 — Nicotiana attenuata

Summary

A4A49_27391 (NPK1) on chromosome 7 of coyote tobacco (Nicotiana attenuata) encodes a protein with MAPKK and MEKK activity, calcium-dependent protein serine/threonine kinase activity, calmodulin binding, and calcium ion binding, placing it in the plant MAPKKK family. The gene is associated with the MAPK cascade, cytokinesis, cell plate assembly, and regulation of cytokinesis, as well as lateral growth, cell localization, and various cell cycle phases including mitosis, meiosis, prophase, metaphase, anaphase, and interphase. It is linked to drought tolerance and localizes to the nucleus, cytoplasm, membrane, plasmalemma, nucleolus, and microtubule organizing center. Studies of related genes in other species connect the family to sugar content and stomatal opening.