CHOLERA TOXIN
cholera toxin: translation
A multimeric protein toxin from Cholera vibrio. The toxic A subunit (27 kD) activates adenyl cyclase irreversibly by ADP-ribosylation of a Gs protein. The B subunit (57 kD) has 5 identical monomers, binds to GM1 ganglioside and facilitates passage of the A subunit across the cell membrane.