The article focuses on the two research papers which reveal that an effector protein NleB blocks death receptor signalling. It states that an NleB is an effector protein for enteropathogenic Escherichia coli (EPEC) which regulates a range of host cell processes. It notes that EPEC NleB can block death receptor signalling through the transferase activity of N-acetylglucosamine (GlcNAc).