*2.3.7 The C. trachomatis outer membrane complex protein B*

The *C. trachomatis* outer membrane complex protein B (OmcB) is a well-described antigen as far as chlamydial infections are concerned. It is an abundant outer membrane protein, highly conserved among *Chlamydia* species that acts as an adhesin for chlamydial invasion into epithelial cells. It seems to provoke robust antigenic response via the release of the C-terminal region of the molecule (OmcBc) to host cell cytosol [4]. The fragment OmcBc is present in host cell cytosol. The fragment OmcBn stays in the chlamydial inclusions. OmcBc proved to be highly immunogenic in women infected by the microbe. OmcB is therefore a target for the development of diagnostic tools and vaccines [19].
