Arabidopsis thaliana PECP1 - Enzymatic characterization and structural organization of the first plant phosphoethanolamine/phosphocholine phosphatase

► We identified a cytosolic enzyme function so far unknown in plants. ► The phosphatase AtPECP1 is highly specific for PCho and PEA hydrolysis. ► AtPECP1 is active in a rapid monomer-dimer equilibrium of protein subunits. ► Phosphate deprivation activates the AtPECP1gene. ► AtPECP1 participates in a phospholipid degradation pathway during Pi stress.