CD86 Antibody – Rabbit Polyclonal

This gene encodes a type I membrane protein that is a member of the immunoglobulin superfamily. This protein is expressed by antigen-presenting cells, and it is the ligand for two proteins at the cell surface of T cells, CD28 antigen and cytotoxic T-lymphocyte-associated protein 4. Binding of this protein with CD28 antigen is a costimulatory signal for activation of the T-cell. Binding of this protein with cytotoxic T-lymphocyte-associated protein 4 negatively regulates T-cell activation and diminishes the immune response. Alternative splicing results in several transcript variants encoding different isoforms.[provided by RefSeq, May 2011]

CD86: Receptor involved in the costimulatory signal essential for T-lymphocyte proliferation and interleukin-2 production, by binding CD28 or CTLA-4. May play a critical role in the early events of T-cell activation and costimulation of naive T-cells, such as deciding between immunity and anergy that is made by T- cells within 24 hours after activation. Isoform 2 interferes with the formation of CD86 clusters, and thus acts as a negative regulator of T-cell activation. 4 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral; Immunoglobulin superfamily

Chromosomal Location of Human Ortholog: 3q21

Cellular Component: cell surface; external side of plasma membrane; integral to membrane; intracellular membrane-bound organelle; plasma membrane

Molecular Function: coreceptor activity; protein binding; receptor activity; receptor binding; viral receptor activity

Biological Process: adaptive immune response; aging; B cell activation; cell-cell signaling; defense response to virus; entry of virus into host cell; epidermal growth factor receptor signaling pathway; fibroblast growth factor receptor signaling pathway; immune response; innate immune response; myeloid dendritic cell differentiation; negative regulation of T cell anergy; nerve growth factor receptor signaling pathway; phosphoinositide-mediated signaling; positive regulation of activated T cell proliferation; positive regulation of cell proliferation; positive regulation of interleukin-2 biosynthetic process; positive regulation of interleukin-4 biosynthetic process; positive regulation of lymphotoxin A biosynthetic process; positive regulation of T-helper 2 cell differentiation; positive regulation of transcription, DNA-dependent; response to drug; response to yeast; T cell activation; T cell costimulation; T cell proliferation during immune response; toll-like receptor 3 signaling pathway