Mycobacterium tuberculosis antigen complex

The **Mycobacterium tuberculosis antigen complex** refers to secreted protein complexes produced by *M. tuberculosis*, most notably the CFP‑10/ESAT‑6 heterodimer. These proteins play an essential role in the pathogenesis of tuberculosis by interacting with host immune cells such as macrophages and monocytes. The CFP‑10/ESAT‑6 complex binds specifically to these cells' surfaces—primarily through a flexible arm formed by the C-terminal region of CFP‑10—which is crucial for its function. This interaction modulates host cell behavior, suppresses effective immune responses, alters cytokine production, inhibits autophagy, and helps *M. tuberculosis* evade detection by both innate and adaptive immunity mechanisms[1][2]. These antigens are also important diagnostic markers for TB infection due to their strong immunogenicity but absence from BCG vaccine strains. If you need structured data on individual components like "CFP‑10" or "ESAT‑6," please specify further.

Other names

M. tuberculosis antigen complexMycobacterium tuberculosis complex antigensCFP-10/ESAT-6 complex (for a specific, well-studied example)

Not directly targeted by drugs; their mechanism involves binding to host cell receptors to modulate immune responses in favor of the pathogen.