CAT1 — Nicotiana attenuata

Summary

A4A49_01839 (CAT1) on chromosome 4 of coyote tobacco (Nicotiana attenuata) encodes a protein with catalase activity, heme binding, and metal binding. This gene is associated with hydrogen peroxide catabolic and biosynthetic processes, cellular redox homeostasis, detoxification, and responses to aluminum, cadmium, salt, bacteria, and hydrogen peroxide. It is also linked to ethylene anabolism, circadian rhythm, seed germination, fruit development, and cellular nitric oxide homeostasis. The product localizes to the peroxisomal lumen, cytosol, plasmalemma, cytoplasm, and nucleus. Additionally, CAT1 is associated with photosynthetic traits including net photosynthetic rate, quantum yield, transpiration rate, stomatal resistance, and photochemical quenching. Studies of related genes in other species link the family to the enzyme class EC 1.11.1.6.