CD4 Monoclonal Antibody (RPA-T4), PE-Cyanine5.5, eBioscience™, Invitrogen™

Description

• The RPA-T4 MAb reacts with human CD4, a 59 kDa cell surface receptor expressed by a majority of thymocytes, subpopulation of mature T cells (T-helper cells) and in low levels on monocytes
• CD4 is a receptor for the human immunodeficiency virus (HIV)
• RPA-T4 blocks HIV binding and mixed lymphocyte reaction
• The RPA-T4 antibody recognizes a different epitope than the OKT4 MAb, and these antibodies do not cross-block binding to each other's respective epitopes
• The CD4 antigen is involved in the recognition of MHC class II molecules and is a co-receptor for HIV
• CD4 is primarily expressed in a subset of T-lymphocytes, also referred to as T helper cells, but may also be expressed by other cells in the immune system, such as monocytes, macrophages, and dendritic cells
• At the tissue level, CD4 expression may be detected in thymus, lymph nodes, tonsils, and spleen, and also in specific regions of the brain, gut, and other non-lymphoid tissues
• CD4 functions to initiate or augment the early phase of T-cell activation through its association with the T-cell receptor complex and protein tyrosine kinase, Lck
• It may also function as an important mediator of direct neuronal damage in infectious and immune-mediated diseases of the central nervous system
• Multiple alternatively spliced transcripts have been identified in this gene [RefSeq, July 2017].