Description
Mouse CD27, also known as TNFRSF7, is a member of the tumor necrosis factor receptor (TNFR) superfamily characterized by the presence of a Cys-knot motif in the extracellular region, which occurs three times in CD27. CD27 is a type I transmembrane glycoprotein existing as disulfide-linked homodimer, and has been shown to play roles in lymphoid proliferation, differentiation, and apoptosis. CD27 has been defined as a T and B cell co-stimulatory molecule, and its activity is governed by the transient availability of its TNF-like ligand CD70 on lymphocytes and dendritic cells. In man and mouse, CD27 is restricted to lymphoid cells and present on the great majority of naive CD4+ and CD8+ T cells