PAP2 — Brassica oleracea var. botrytis

Summary

BoPAP2, located on chromosome 8 of cauliflower (Brassica oleracea var. botrytis), encodes a purple acid phosphatase family protein, characterised by PAPs_N, PAPs_C, calcineurin-like phosphoesterase and metallo-dependent phosphatase domains. The enzyme exhibits phosphoenolpyruvate phosphatase, acid phosphatase, protein phosphatase and hydrolase activities, binds ferric iron, cobalt, manganese and zinc, and is involved in protein dimerization. BoPAP2 is associated with anthocyanin and flavonoid biosynthesis, pigmentation, mitochondrial RNA modification, mitochondrial outer membrane protein import, regulation of carbohydrate metabolism, and cellular response to phosphate starvation. It localises to the mitochondrial envelope, chloroplast envelope, vacuolar lumen, Golgi complex, endosome, plant-type cell wall and extracellular space. The gene is linked to photosynthetic rate, leaf senescence, abiotic stress tolerance, pollen development and lipid metabolism. Related genes in other species are linked to anthocyanin accumulation, plant growth and seed oil yield.