Description: The 2B11 monoclonal antibody reacts with mouse and human CXCR4, also known as CD184, Fusin, LESTR, or HUMSTR. Fusin is a member of the G-protein-coupled chemokine receptor family with seven membrane-spanning domains, and functions as a coreceptor for X4 HIV-1 entry into CD4+ cells. In addition it has been shown to play a role in lymphocyte migration. The ligand for CXCR4 is SDF1. CXCR4 is required for maintenance of granulocyte progenitors in the bone marrow and essential for B cell development. Expression of CXCR4 is different between mice and human. In the thymus CXCR4 is restricted to CD4+CD8+ cells while in the spleen predominant expression is found on B lymphocytes.
The monoclonal antibody 2B11 recognizes the amino terminus of CXCR4 and has been reported to have functional activity; it does not block SDF1a but causes internalization of the receptor.
Applications Reported: This 2B11 antibody has been reported for use in flow cytometric analysis.
Applications Tested: This 2B11 antibody has been tested by flow cytometric analysis of mouse thymocytes. This can be used at less than or equal to 1 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.
eFluor® 450 is an alternative to Pacific Blue®. eFluor® 450 emits at 445 nm and is excited with the Violet laser (405 nm). Please make sure that your instrument is capable of detecting this fluorochome.
Excitation: 405 nm; Emission: 445 nm; Laser: Violet Laser.
Filtration: 0.2 µm post-manufacturing filtered.
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. Acts as a coreceptor (CD4 being the primary receptor) for HIV-1 X4 isolates and as a primary receptor for some HIV-2 isolates. Promotes Env-mediated fusion of the virus. Binds bacterial lipopolysaccharide (LPS) et mediates LPS-induced inflammatory response, including TNF secretion by monocytes.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: C-X-C chemokine receptor type 4; CD184; chemokine (C-X-C) receptor 4; chemokine receptor 4; CXC Chemokine Receptor 4; CXC-R4; CXCR-4; Fusin; HUMSTR; LESTR; Leukocyte-derived seven transmembrane domain receptor; leukocyte-expressed seven-transmembrane-domain; PB-CKR; Pre-B-cell-derived chemokine receptor; SDF-1 receptor; Stromal cell-derived factor 1 receptor
Gene Aliases: b2b220Clo; CD184; Cmkar4; Cxcr4; LESTR; PB-CKR; PBSF/SDF-1; Sdf1r
UniProt ID: (Mouse) P70658
Entrez Gene ID: (Mouse) 12767
Molecular Function: cell adhesion molecule cytokine receptor defense/immunity protein hydrolase immunoglobulin receptor superfamily immunoglobulin superfamily cell adhesion molecule phosphatase protein phosphatase receptor