Moraxella catarrhalis is a fastidious, nonmotile, Gram-negative, aerobic, oxidase-positive diplococcus that can cause infections of the respiratory system, middle ear, eye, central nervous system, and joints of humans. It causes the infection of the host cell by sticking to the host cell using trimeric autotransporter adhesins. 60 kDa chaperonin groEL2 prevents misfolding and promotes the refolding and proper assembly of unfolded polypeptides generated under stress conditions.