PAP2 — Brassica napus

Summary

BnPAP2 (PAP2) on chromosome A09 of oilseed rape encodes a purple acid phosphatase family protein with domains including PAPs_N, PAPs_C, and calcineurin-like phosphoesterase domains, and exhibits phosphoenolpyruvate phosphatase, acid phosphatase, and protein phosphatase activities, along with ferric iron and metal ion binding. The gene is associated with anthocyanin metabolism and its regulation, pigmentation, petal development, and cellular response to phosphate starvation. It has been linked to flower color, photosynthetic rate, and phenotypes such as anthocyanin biosynthesis, flavonoid biosynthesis, leaf senescence, abiotic stress tolerance, and mitochondrial RNA editing. Studies of related genes in other species connect the family to anthocyanin accumulation, plant growth, and seed oil yield. The product localizes to multiple compartments including the mitochondrial envelope, chloroplast envelope, vacuolar lumen, and cell wall.