A formula of a compound that shows the relationship of the atoms in a molecule. The atoms are shown joined by valence bonds (e.g., H-O-H) as opposed to the empirical formula (H2O).
Causes. Pertussis, a respiratory illness commonly known as whooping cough, is a very contagious disease caused by a type of bacteria called Bordetella pertussis.
Bordetella pertussis has several virulence factors, one of which is the adenylate cyclase toxin (CyaA). It is the agent that causes whooping cough. CyaA invades eukaryotic cells by a calcium-dependent mechanism in which the CyaA catalytic domain is directly moved across the target cellâs plasma membrane.