Predicted to enable transmembrane signaling receptor activity. Acts upstream of or within B cell proliferation involved in immune response; cellular response to lipopolysaccharide; and positive regulation of lipopolysaccharide-mediated signaling pathway. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. Predicted to be active in extracellular matrix and extracellular space. Orthologous to human CD180 (CD180 molecule). [provided by Alliance of Genome Resources, Apr 2022]