In C. hepaticus HV10T, a component of the periplasmic nitrate reductase NapAB complex, nitrate reductase electron transfer subunit (NapB), was identified as glycosylated at a single site with upregulation of this gene in C. hepaticus recovered from the bile of SLD positive chickens7, further emphasizing the importance of the ability of C. hepaticus to establish infection in the oxygen-deprived environment found in the bile. Here, NAPB is linked to infection.