PR5 — Solanum tuberosum

Summary

PGSC0003DMG400026926, designated StPR5 on potato chromosome 6, encodes an osmotin protein belonging to the thaumatin-like superfamily. The product exhibits glucan endo-1,3-beta-D-glucosidase activity and IgE binding. StPR5 is associated with defence responses, including systemic acquired resistance, induced systemic resistance, defence response to fungi, and killing of cells of other organism. It is also associated with responses to abscisic acid, UV-B, salinity stress, and general stress, as well as with cell death, cell division, DNA replication, and NO storage. The protein localises to the apoplast and extracellular space. Related genes in other species link the family to glucan endo-1,3-beta-glucosidase activity (EC 3.2.1.39).