Anti-beta subunit Cholera Toxin antibody [2/63]

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Biological function summary

The beta subunit engages in the initial binding steps of cholera toxin to host cells. It plays an important role in the receptor-mediated endocytosis of the whole cholera toxin complex. This binding leads to the translocation of the enzymatically active A subunit into the cytosol where it can then exert its effects. The beta subunit does not act alone but operates as part of the larger cholera toxin complex which is essential for efficient toxin uptake and subsequent pathogenic processes.

Pathways

The beta subunit's function is integral to the cholera toxin pathway which involves uptake and movement of the toxin into the cell. Upon binding to GM1 gangliosides via CTB the cholera toxin gets endocytosed and trafficked to the Golgi and then the endoplasmic reticulum where the A subunit eventually modifies a regulatory G-protein. This alteration leads to an increase in cAMP levels. The pathway heavily relies on the beta subunit's binding affinity for GM1 distinguishing it from other toxins and allows the cholera toxin to utilize the endocytic pathways effectively.