Enables lipopolysaccharide binding activity. Involved in several processes, including liver development; positive regulation of macrophage activation; and positive regulation of phagocytosis, engulfment. Located in extracellular space. Used to study obesity. Biomarker of liver cirrhosis; obstructive jaundice; and periodontitis. Orthologous to human LBP (lipopolysaccharide binding protein). [provided by Alliance of Genome Resources, Apr 2022]