PR5 — Nicotiana attenuata

Summary

A4A49_11432 (NaPR5) in Nicotiana attenuata encodes a thaumatin-like protein with glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. The gene is associated with defense responses, including systemic acquired resistance, defense against fungi, and programmed cell death. It is also linked to responses to abscisic acid, ethylene, and arachidonate, as well as to cell wall biogenesis, secretion, and posttranscriptional regulation of gene expression. Localization evidence places the product in the apoplast and extracellular space. The gene is also associated with leaf curling. Related genes in other species link the family to glucan endo-1,3-beta-glucosidase activity (EC 3.2.1.39).