參閱全部 CXCR4 抗體 (19) ...
Rabbit polyclonal to CXCR4
Mouse, Rat, Human
Synthetic peptide: ILSKGKRGGHS, corresponding to amino acids 328-338 of Human CXCR4.
Whole cell lysate from HeLa cells.
Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
Preservative: 0.05% Sodium Azide
Constituents: 0.05% BSA, PBS
Protein G purified
This antibody is affinity purified.
Metabolism >> Types of disease >> Cancer
Metabolism >> Pathways and Processes >> Metabolism processes >> Hypoxia
Immunology >> Immune System Diseases >> Antiviral Signaling >> HIV-related
Cancer >> Cancer Metabolism >> Response to hypoxia
Stem Cells >> Endothelial Progenitors >> Endothelial Markers
Immunology >> Adaptive Immunity >> Regulatory T Cells
Stem Cells >> Hematopoietic Progenitors >> Surface Molecules
Stem Cells >> Neural Stem Cells >> Surface Molecules
Neuroscience >> Neurology process >> Growth and Development >> Axonal Guidance Proteins
Microbiology >> Interspecies Interaction >> Host Virus Interaction
Immunology >> Innate Immunity >> Chemokines >> Alpha Chemokine Rec. (CXCR)
Western blot - CXCR4 antibody (ab13854)(enlarge)
Our Abpromise guarantee covers the use of ab13854 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
WB: Use a concentration of 1 - 2 µg/ml. Detects a band of approximately 45 kDa (predicted molecular weight: 42 kDa).
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.
Expressed in numerous tissues, such as peripheral blood leukocytes, spleen, thymus, spinal cord, heart, placenta, lung, liver, skeletal muscle, kidney, pancreas, cerebellum, cerebral cortex and medulla (in microglia as well as in astrocytes), brain microvascular, coronary artery and umbilical cord endothelial cells. Isoform 1 is predominant in all tissues tested.
Defects in CXCR4 are a cause of WHIM syndrome (WHIM) [MIM:193670]; 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.
Belongs to the G-protein coupled receptor 1 family.
The amino-terminus is critical for ligand binding. Residues in all four extracellular regions contribute to HIV-1 coreceptor activity.
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.
Cell membrane. In unstimulated cells, diffuse pattern on plasma membrane. On agonist stimulation, colocalizes with ITCH at the plasma membrane where it becomes ubiquitinated.
Target information above from: UniProt accessionP61073The UniProt Consortium
The Universal Protein Resource (UniProt) in 2010
Nucleic Acids Res. 38:D142-D148 (2010).
Western blot - CXCR4 antibody (ab13854)
Predicted band size : 42 kDa
Western blot analysis of 15 µg of whole cell lysate from HeLa cells with ab13854 at 1 µg/ml detecting CXCR4.