PR5 — Cucumis sativus

Summary

CsPR5 (CSA_2G368860) on cucumber chromosome 2 encodes a thaumatin-like protein 1b, a member of the osmotin/thaumatin-like superfamily, with glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. The protein is localised to the apoplast and extracellular space. CsPR5 is associated with systemic acquired resistance, defence response to fungi, and killing of cells of other organisms, as well as response to abscisic acid. Related genes in other species link the thaumatin-like protein family to glucan endo-1,3-beta-glucosidase activity (EC 3.2.1.39).