An NPF transporter exports a central monoterpene indole alkaloid intermediate from the vacuole

作者:Payne Richard M E; Xu Deyang; Foureau Emilien; Carqueijeiro Marta Ines Soares Teto; Oudin Audrey; de Bernonville Thomas Duge; Novak Vlastimil; Burow Meike; Olsen Carl Erik; Jones D Marc; Tatsis Evangelos C; Pendle Ali; Halkier Barbara Ann; Geu Flores Fernando; Courdavault Vincent; Nour Eldin Hussam Hassan; O'Connor Sarah E*
来源:Nature Plants, 2017, 3(2): 16208.
DOI:10.1038/nplants.2016.208

摘要

Plants sequester intermediates of metabolic pathways into different cellular compartments, but the mechanisms by which these molecules are transported remain poorly understood. Monoterpene indole alkaloids, a class of specialized metabolites that includes the anticancer agent vincristine, antimalarial quinine and neurotoxin strychnine, are synthesized in several different cellular locations. However, the transporters that control the movement of these biosynthetic intermediates within cellular compartments have not been discovered. Here we present the discovery of a tonoplast localized nitrate/ peptide family (NPF) transporter from Catharanthus roseus, CrNPF2.9, that exports strictosidine, the central intermediate of this pathway, into the cytosol from the vacuole. This discovery highlights the role that intracellular localization plays in specialized metabolism, and sets the stage for understanding and controlling the central branch point of this pharmacologically important group of compounds.

  • 出版日期2017-2