PAP2 — Brassica juncea

Summary

BJUB02G10560S (BjPUP1, also known as PAP2) encodes a purple acid phosphatase family protein with domains including PPA-like, calcineurin-like phosphoesterase, and metallo-dependent phosphatase signatures. The enzyme exhibits phosphoenolpyruvate phosphatase, acid phosphatase, and protein phosphatase activities, binds ferric iron, manganese, and zinc, and localizes to the vacuolar lumen, plant-type cell wall, plasmodesmata, and extracellular space. This gene is associated with pigmentation and anthocyanin anabolism, as well as cellular response to phosphate starvation. It has been linked to flower and petal color traits and to phosphate deficiency tolerance, adaptation, and limitation tolerance. Studies of related genes in other species connect the family to phosphate starvation response, phosphate acquisition, and utilization, as well as to phosphorus uptake and anthocyanin content.