CAT1 — Capsicum annuum

Summary

CaCAT1 (T459_06075) on pepper chromosome 2 encodes a catalase (EC 1.11.1.6), a haem-binding enzyme that also exhibits nucleoside diphosphate kinase activity and is associated with diverse molecular functions including protein kinase activity and DNA-binding transcription factor activity. The gene is linked to cellular responses to hydrogen peroxide, superoxide, and sulfate or nitrogen starvation, as well as to hormone metabolism, photoperiodism, systemic acquired resistance, and programmed cell death regulation. Its product localises to the peroxisomal lumen, tonoplast, apoplast, and plasmodesmata. CaCAT1 is associated with chilling stress response, fruit ripening, biomass yield, seed yield, net photosynthetic rate, chlorophyll content, oxidative stress response, disease tolerance, and salt tolerance. Related genes in other species are linked to drought tolerance, salt tolerance, and oxidative stress tolerance.