Detects rat CX3CL1/Fractalkine in ELISAs and Western blots. In Western blots, less than 5% cross-reactivity with recombinant human (rh) Eotaxin is observed. Neutralizes the biological activity of rhCX3CL1 and rmCX3CL1 with similar effectiveness.
Polyclonal Goat IgG
E. coli-derived recombinant rat CX3CL1/Fractalkine Gln25-Gly100 Accession # O55145
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
Recombinant Rat CX3CL1/Fractalkine (Catalog # 536-FR)
Rat CX3CL1/Fractalkine Sandwich Immunoassay
ELISA Capture (Matched Antibody Pair)
Rat CX3CL1/Fractalkine Chemokine Domain Antibody (Catalog #
ELISA Detection (Matched Antibody Pair)
Rat CX3CL1/Fractalkine Chemokine Domain Biotinylated Antibody (Catalog #
Recombinant Rat CX3CL1/Fractalkine Protein (Catalog #
Measured by its ability to neutralize CX3CL1/Fractalkine-induced chemotaxis in the BaF3 mouse pro‑B cell line transfected with human CX3CR1. The Neutralization Dose (ND50) is typically 0.3-1.2 µg/mL in the presence of 40 ng/mL Recombinant Rat CX3CL1/Fractalkine.
Please Note: Optimal dilutions should be determined by each laboratory for each application.
are available in the Technical Information section on our website.
Chemotaxis Induced by CX3CL1/Fractalkine and Neutralization by Rat CX3CL1/Fractalkine Antibody.
Recombinant Rat CX3CL1/Fractalkine (Catalog # 536-FR) chemoattracts the BaF3 mouse pro‑B cell line transfected with human CX3CR1 in a dose-dependent manner (orange line). The amount of cells that migrated through to the lower chemotaxis chamber was measured by Resazurin (Catalog # AR002). Chemotaxis elicited by Recombinant Rat CX3CL1/Fractalkine (40 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Rat CX3CL1/Fractalkine Chemokine Domain Antigen Affinity-purified Polyclonal Antibody (Catalog # AF537). The ND50 is typically 0.3-1.2 µg/mL.
CX3CL1/Fractalkine was detected in perfusion fixed frozen sections of mouse brain (cingulate cortex) using 1.7 µg/mL Goat Anti-Rat CX3CL1/Fractalkine Chemokine Domain Antigen Affinity-purified Polyclonal Antibody (Catalog # AF537) overnight at 4 °C. Tissue was stained with the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
CX3CL1, also named neurotactin, is a member of the delta chemokine subfamily that contains a novel C-X3-C motif. Unlike other known chemokines, CX3CL1 is a type 1 membrane protein containing a chemokine domain tethered on a long mucin-like stalk. Rat CX3CL1 cDNA encodes a 393 amino acid (aa) residue precursor protein with two alternative (21 aa or 24 aa residue) putative signal peptides, a 74 aa or 76 aa residue globular chemokine domain, a 238 aa residue stalk region rich in Gly, Pro, Ser and Thr and containing degenerate mucin-like repeats, a 19 aa residue transmembrane segment and a 36 aa residue cytoplasmic domain. The extracellular domain of CX3CL1 can potentially be released as a soluble protein by proteolysis at the conserved dibasic motif proximal to the transmembrane region. With the exception of the stalk region, rat CX3CL1 shares a high degree of amino acid sequence homology (83% sequence identity) with human and mouse CX3CL1. CX3CL1 is expressed in various tissues including heart, brain, lung, kidney, skeletal muscle, and testis. In rat brain, CX3CL1 expression was found to be localized principally to neurons. The expression of CX3CL1 was also reported to be up-regulated on activated endothelial cells. Membrane-bound CX3CL1 has been shown to promote adhesion of leukocytes. The soluble chemokine domain of human CX3CL1 was reported to be chemotactic for T cells and monocytes while the soluble chemokine domain of mouse CX3CL1 was reported to chemoattract neutrophils and T‑lymphocytes but not monocytes. CX3CR1, previously named V28 or chemokine beta receptor‑like 1, has been found to be a specific receptor for CX3CL1. In addition, US28, a 7TM receptor encoded by human cytomegalovirus that binds multiple CC chemokines, has also been shown to bind CX3CL1 with high-affinity.
Kledal, T.N. et al. (1998) FEBS Lett. 441:209.
Combadiere, C. et al. (1998) J. Biol. Chem. 273:23799.
Harrison, J.L. et al. (1998) Proc. Natl. Acad. Sci. USA 95:10896.
Rossi, D.L. et al. (1998) Genomics 47:163.
Entrez Gene IDs:
6376 (Human); 20312 (Mouse); 89808 (Rat)
ABCD-3; C3Xkine; chemokine (C-X3-C motif) ligand 1; CX3C membrane-anchored chemokine; CX3CL1; CXC3; CXC3C; FKN; Fractalkine; Neurotactin; neurotactin); NTNsmall inducible cytokine subfamily D (Cys-X3-Cys), member 1 (fractalkine; NTTSmall-inducible cytokine D1; SCYD1C-X3-C motif chemokine 1; small inducible cytokine subfamily D (Cys-X3-Cys), member-1
R&D Systems personnel manually curate a database that contains references using R&D Systems products.
The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.
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We have 2 reviews tested in 2 applications: Immunocytochemistry/Immunofluorescence, Immunohistochemistry.
Immunocytochemistry/Immunofluorescence: Rat CX3CL1/Fractalkine Chemokine Domain Antibody [AF537].
Other Experimental Details
Other Experimental Details
Results published in:Article title: Noradrenaline induces CX3CL1 production and release by neuronsArticle reference: NP6524Journal title: NeuropharmacologyFinal version published online: 08-Dec-2016DOI information: 10.1016/j.neuropharm.2016.12.001