B7-H3 Recombinant Protein

CD276: May participate in the regulation of T-cell-mediated immune response. May play a protective role in tumor cells by inhibiting natural-killer mediated cell lysis as well as a role of marker for detection of neuroblastoma cells. May be involved in the development of acute and chronic transplant rejection and in the regulation of lymphocytic activity at mucosal surfaces. Could also play a key role in providing the placenta and fetus with a suitable immunological environment throughout pregnancy. Both isoform 1 and isoform 2 appear to be redundant in their ability to modulate CD4 T-cell responses. Isoform 2 is shown to enhance the induction of cytotoxic T-cells and selectively stimulates interferon gamma production in the presence of T-cell receptor signaling. Belongs to the immunoglobulin superfamily. BTN/MOG family. 4 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral

Chromosomal Location of Human Ortholog: 15q23-q24

Cellular Component: integral to membrane; external side of plasma membrane

Molecular Function: protein binding; receptor binding

Biological Process: cell proliferation; positive regulation of osteoblast differentiation; regulation of immune response; negative regulation of T cell proliferation; T cell activation; negative regulation of inflammatory response; negative regulation of interleukin-2 biosynthetic process; positive regulation of T cell proliferation; immune response; positive regulation of bone mineralization; positive regulation of interferon-gamma biosynthetic process; negative regulation of interferon-gamma biosynthetic process