PAP2 — Brassica napus

Summary

BnPAP2 (DARMORV10_A06P09920.1) on chromosome A06 of oilseed rape (Brassica napus) encodes a purple acid phosphatase family protein with domains including PAPs_N, PAPs_C, and calcineurin-like phosphoesterase. The enzyme exhibits phosphoenolpyruvate phosphatase, acid phosphatase, and protein phosphatase activities, and binds ferric iron, manganese, cobalt, and zinc. BnPAP2 is associated with anthocyanin biosynthesis and metabolism, pigmentation, petal development, and regulation of anthocyanin anabolism. It is linked to flower color, photosynthetic rate, leaf senescence, abiotic stress tolerance, pollen development, and lipid metabolism. The gene is connected to cellular responses to phosphate starvation, regulation of carbohydrate metabolism, and mitochondrial RNA modification. Localization evidence places the protein at mitochondrial and chloroplast envelopes, vacuolar lumen, Golgi, endosomes, and the plant cell wall. Related genes in other species link the family to anthocyanin accumulation, plant growth, and seed oil yield.