Proteomic analysis of digestive tract peptidases and lipases from the invasive gastropod Pomacea canaliculata.

From an integrative physiological and anatomical perspective, Pomacea canaliculata shows an unexpected abundance and diversity of peptidases, which participate mainly in extracellular digestion. Moreover, the previously unknown occurrence of luminal lipases from digestive gland are reported for the first time. Salivary and digestive glands were the main tissues involved in the synthesis and secretion of these enzymes, but the few luminally exclusive peptidases are plausibly secreted by ventrolateral pouches or epithelial unicellular glands.