PR5 — Solanum tuberosum

Summary

PGSC0003DMG400022559, designated StPR5 on potato chromosome 3, encodes a thaumatin-like protein (TLP) belonging to the osmotin/thaumatin-like superfamily. The product exhibits glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. StPR5 is associated with defense responses, including systemic acquired resistance, induced systemic resistance, and defense against fungi. It is linked to responses to stress, salicylate, ethylene, abscisic acid, arachidonate, and salinity, as well as cell death, cell division, DNA replication, and nitric oxide storage. The protein localizes to the apoplast and extracellular space. Studies of related genes in other species connect the family to glucan endo-1,3-beta-D-glucosidase activity (EC 3.2.1.39).