Anti-CXCR4 Antibody (RMAB-0250493)
Cat. No.: RMAB-0250493
Category: Primary Antibodies
INQUIRY
10 μL
100 μL
Rabbit monoclonal to CXCR4
Product Features
| Isotype | IgG |
|---|---|
| Clonality | Monoclonal |
| Host Species | Rabbit |
| Clone Number | EPUMBR3 |
| Form | Liquid |
| Purity | Protein A purified |
| Species Reactivity | Mouse, Human, Recombinant fragment |
| Immunogen | Synthetic peptide. |
| Applications | Flow Cyt (Intra), WB, IHC-P, ICC/IF |
| Key Features | Produced recombinantly (animal-free) for high batch-to-batch consistency and long term security of supply; Rabbit monoclonal to CXCR4; Suitable for: Flow Cyt (Intra), WB, IHC-P, ICC/IF; Knockout validated; Reacts with: Mouse, Human, Recombinant fragment |
Target Information
| Target Symbol | CXCR4 |
|---|---|
| Target Name | C-X-C chemokine receptor type 4 |
| UniProt ID | P61073 |
| Cellular Localization | Cell membrane. In unstimulated cells, diffuse pattern on plasma membrane. On agonist stimulation, colocalizes with ITCH at the plasma membrane where it becomes ubiquitinated. |
| Function | Receptor for the C-X-C chemokine CXCL12/SDF-1 that transduces a signal by increasing intracellular calcium ions levels and enhancing MAPK1/MAPK3 activation. Acts as a receptor for extracellular ubiquitin; leading to enhance intracellular calcium ions and reduce cellular cAMP levels. Involved in haematopoiesis and in cardiac ventricular septum formation. Plays also an essential role in vascularization of the gastrointestinal tract, probably by regulating vascular branching and/or remodeling processes in endothelial cells. Could be 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. |
| Involvement in Disease | Defects in CXCR4 are a cause of WHIM syndrome (WHIM); also known as warts, hypogammaglobulinemia, infections and myelokathexis. WHIM syndrome is an immunodeficiency disease characterized by neutropenia, hypogammaglobulinemia and extensive human papillomavirus (HPV) infection. Despite the peripheral neutropenia, bone marrow aspirates from affected individuals contain abundant mature myeloid cells, a condition termed myelokathexis. |
| Post-translational Modifications | Phosphorylated on agonist stimulation. Rapidly phosphorylated on serine and threonine residues in the C-terminal. Phosphorylation at Ser-324 and Ser-325 leads to recruitment of ITCH, ubiquitination and protein degradation. Ubiquitinated by ITCH at the cell membrane on agonist stimulation. The ubiquitin-dependent mechanism, endosomal sorting complex required for transport (ESCRT), then targets CXCR4 for lysosomal degradation. This process is dependent also on prior Ser-/Thr-phosphorylation in the C-terminal of CXCR4. Also binding of ARRB1 to STAM negatively regulates CXCR4 sorting to lysosomes though modulating ubiquitination of SFR5S. Sulfation on Tyr-21 is required for efficient binding of CXCL12/SDF-1alpha and promotes its dimerization. O- and N-glycosylated. Asn-11 is the principal site of N-glycosylation. There appears to be very little or no glycosylation on Asn-176. N-glycosylation masks coreceptor function in both X4 and R5 laboratory-adapted and primary HIV-1 strains through inhibiting interaction with their Env glycoproteins. The O-glycosylation chondroitin sulfate attachment does not affect interaction with CXCL12/SDF-1alpha nor its coreceptor activity. |
| Domain | The amino-terminus is critical for ligand binding. Residues in all four extracellular regions contribute to HIV-1 coreceptor activity. |
| Sequence Similarities | Belongs to the G-protein coupled receptor 1 family. |
Storage & Shipping
| Storage Buffer | pH: 7.20; Preservative: 0.01% Sodium azide; Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.5% BSA |
|---|---|
| Storage & Shipping | Shipped at 4°C. Store at 4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle. |
For research use only. Not for clinical use.
