**2.3 Chlamydial proteins present in the cytosol of infected cells**

Many chlamydial proteins have been described in literature to be present in the cytosol of infected cells, but their distinct role as virulence factors still needs to be elucidated. Those proteins are CPAF, cHtrA, CT621, CT622, CT311, CT795, *C. trachomatis* glycogen synthase (GlgA), the *C. trachomatis* outer membrane complex protein B, and Pgp3 [12]. Identification of these proteins can elucidate further the mechanism of pathogenic activity of the bacterium [12]. Bacterial antigens present in host cell cytosol are more immunogenic [4].
