Chlamydia are a group of obligate intracellular Gram-negative bacteria,which can cause many diseases in a wide range of hosts.Chlamydial Type Ⅲ secretion system effector proteins are secreted by Chlamydiathrough the type III secretion system,which are associated with Chlamydial survival and virulence.Chlamydial T3 SS effector proteins play an important role in regulating the functions of host cells,such as inducing actin cytoskeleton reorganization,changing the host cell signal transduction mechanisms and inhibiting the host cell apoptosis.The...