Predicted to enable receptor ligand activity. Predicted to be involved in B cell differentiation; positive regulation of B cell proliferation; and tumor necrosis factor-mediated signaling pathway. Predicted to act upstream of or within B cell homeostasis; positive regulation of germinal center formation; and positive regulation of lymphocyte activation. Predicted to be located in several cellular components, including focal adhesion; perinuclear region of cytoplasm; and plasma membrane. Predicted to be active in extracellular space. Orthologous to human TNFSF13B (TNF superfamily member 13b). [provided by Alliance of Genome Resources, Apr 2022]