The chemokine receptor CXCR4, a 7-transmembrane protein on cell surface, acts with the CD4 protein to support HIV entry into cells. CXCR4 is highly expressed in brain and heart, white blood cells, vascular endothelial cells, and umbilical cord endothelial cells. Several CXCR4 isoforms have been identified with molecular weights of 47, 50, 62 and 98kDa. The 62-64kDa CXCR4 is predominantly ubiquitinated and is preferentially associated with CD4. This antibody recognizes the 62kd CXCR4.
Categories
Primary Antibodies
Clonality
monoclonal
Description
Receptor for the C-X-C chemokine CXCL12/SDF-1 that transduces a signal by increasing intracellular calcium ion levels and enhancing MAPK1/MAPK3 activation. Acts as a receptor for extracellular ubiquitin; leading to enhanced intracellular calcium ions and reduced cellular cAMP levels. Involved in hematopoiesis and in cardiac ventricular septum formation. Also plays an essential role in vascularization of the gastrointestinal tract, probably by regulating vascular branching and/or remodeling processes in endothelial cells. Involved in cerebellar development. In the CNS, could mediate hippocampal-neuron survival. (Microbial infection) Acts as a coreceptor (CD4 being the primary receptor) for human immunodeficiency virus-1/HIV-1 X4 isolates and as a primary receptor for some HIV-2 isolates. Promotes Env-mediated fusion of the virus (PubMed:9427609, PubMed:10074122, PubMed:10756055). Binds bacterial lipopolysaccharide (LPS) et mediates LPS-induced inflammatory response, including TNF secretion by monocytes (PubMed:11276205).