PRP1 — Capsicum annuum

Summary

CaPRP1 (T459_22739) on pepper chromosome 9 encodes a probable glutathione S-transferase (GST) of the Tau class, with glutathione transferase activity (EC 2.5.1.18). The gene is associated with diverse biological processes including glutathione metabolism, hormone metabolism, auxin and cytokinin signaling, response to abscisic acid, gibberellin, heat, and metals, as well as defense response, immune response, cell death, and virus-induced PTGS. It is linked to chilling stress response, net photosynthetic rate, CO₂-based photosynthetic rate, and chlorophyll content. The encoded protein localises to the cytoplasm. Studies of related genes in other species connect the family to drought tolerance, oxidative stress response, hydrogen peroxide content, and pathogen defense, though these associations are not yet established for CaPRP1 itself.