A novel l-rhamnose-binding lectin participates in defending against bacterial infection in zebrafish.

l-rhamnose-binding lectin (RBL), which is a class of animal lectins independent of Ca, can specifically bind l-rhamnose or d-galactose. Although several lectins in zebrafish have been reported, their functional mechanisms have not been fully uncovered. In this study, we discovered a novel l-rhamnose binding lectin (DrRBL) and studied its innate immune function.