Trigger factor from the psychrophilic bacterium Psychrobacter frigidicola is a monomeric chaperone. [2009] Title Trigger factor from the psychrophilic bacterium Psychrobacter frigidicola is a monomeric chaperone.J. Bacteriol. 191, 1162-1168. Author Sylvain Robin, Denisio M Togashi, Alan G Ryder, and J Gerard Wall Related Products and Services PUREfrex®