BAK1 — Solanum lycopersicum

Summary

SOLYC03G007910.3, the tomato BAK1 gene on chromosome 3, encodes a transmembrane receptor protein serine/threonine kinase with coreceptor and signaling receptor activity, belonging to the Ser-Thr/Tyr kinase catalytic domain family. BAK1 is associated with multiple biological processes including protein kinase A activation, trans-autophosphorylation, receptor-mediated endocytosis, actin polymerization, and responses to ER stress and reactive oxygen species. The gene has been linked to leaf necrosis, self-incompatibility, and salt tolerance traits. It localizes to the plasma membrane and is associated with sexual reproduction, organ growth, and developmental regulation. Related genes in other species link this gene family to brassinosteroid signaling and immune responses, though these associations are not yet established in tomato.