PR5 — Cucumis sativus

Summary

CsPR5 (CSA_2G368850) on cucumber chromosome 2 encodes a thaumatin-like protein 1, a member of the osmotin/thaumatin-like superfamily with glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. The gene is associated with systemic acquired resistance, defence responses to fungi, and killing of cells of other organisms. It is linked to responses to salicylate, ethylene, abscisic acid, and arachidonate, as well as salinity response. The encoded protein localises to the apoplast and extracellular space. Studies of related genes in other species connect the family to glucan endo-1,3-beta-glucosidase activity (EC 3.2.1.39).