Type Ⅶ secretion system in Mycobacteria / 中华微生物学和免疫学杂志

Type Ⅶ secretion system(T7SS) is a novel and specialized secretion system discovered in recent years. It was first found in Mycobacterium tuberculosis. Type Ⅶ secretion system is involved in the secretion of virulence-associated proteins, the interaction between pathogens and hosts and the balance of zinc/iron ions. Moreover,it plays a critical role in the growth and pathogenesis of Mycobacteria. This review summarizes the components,substrates and translocation mechanisms of the type Ⅶ secretion system and its relation to the virulence of Mycobacteria aiming to provide references for developing novel strategies for disea-ses diagnosis,treatment and prevention.