PR5 — Nicotiana attenuata

Summary

A4A49_61165 (PR5, also known as TL1) in coyote tobacco (Nicotiana attenuata) encodes a thaumatin-like protein belonging to the osmotin/thaumatin-like superfamily, 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, programmed cell death, and cell death. It is linked to responses to abscisic acid and ethylene, ethylene anabolism, signal transduction, secretion, cell wall biogenesis, digestion, killing of cells of other organisms, posttranscriptional regulation of gene expression, and homeostasis. The encoded protein localizes to the apoplast and extracellular space. The gene has also been connected to leaf curling. Studies of related genes in other species link the thaumatin-like family to glucan endo-1,3-beta-glucosidase activity.