PAP2 — Brassica oleracea var. botrytis

Summary

BoPAP2, located on chromosome 5 of cauliflower (Brassica oleracea var. botrytis), encodes a purple acid phosphatase family protein with domains including PAPs_N, PAPs_C, and calcineurin-like phosphoesterase, and exhibits phosphoenolpyruvate phosphatase, acid phosphatase, and protein phosphatase activities, along with ferric iron, manganese, cobalt, and zinc binding. The gene is associated with anthocyanin metabolism and pigmentation, mitochondrial RNA modification, mitochondrial outer membrane protein import, regulation of carbohydrate metabolism, and cellular response to phosphate starvation. It is linked to photosynthetic rate, leaf senescence, abiotic stress tolerance, pollen development, and lipid metabolism. The protein localises to multiple compartments including the mitochondrial envelope, chloroplast envelope, vacuolar lumen, Golgi complex, and plant-type cell wall. Studies of related genes in other species connect the family to anthocyanin accumulation, plant growth, and seed oil yield.