Recombinant Human CCL26/Eotaxin-3 Protein 653-E3-025: R&D Systems

Recombinant Human CCL26/Eotaxin-3 Protein

(2 citations)   
  • Purity
    >97%, by SDS-PAGE under reducing conditions and visualized by silver stain
  • Endotoxin Level
    <0.01 EU per 1 μg of the protein by the LAL method.
  • Activity
    Measured by its ability to chemoattract BaF3 mouse pro‑B cells transfected with mouse CCR3. The ED50 for this effect is 0.3‑1.5 µg/mL.
  • Source
    E. coli-derived Ser27-Leu94
  • Accession #
  • N-terminal Sequence
    Analysis
    Ser27
  • Predicted Molecular Mass
    8.2 kDa
Carrier Free
What does CF mean?
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
What formulation is right for me?
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
653-E3
 
653-E3/CF
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein.
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
Reconstitution Reconstitute at 25 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: CCL26/Eotaxin-3

Eotaxin-3, also named CCL26 or SCYA26, is a novel human CC chemokine that maps to chromosome 7q11.2, within 40 kilobases of the Eotaxin-2 loci. Eotaxin-3/CCL26 has been shown to be constitutively expressed in the heart and ovary. In addition, low levels of Eotaxin-3/CCL26 expression can also be detected in various tissues. The expression of Eotaxin-3/CCL26 in vascular endothelial cells has been shown to be up-regulated by IL-13 and IL-4.

Eotaxin-3/CCL26 cDNA encodes a 94 amino acid (aa) residue protein with a putative signal peptide of either 23 or 26 aa residues. RecombinantEotaxin-3/CCL26 has been produced in insect cells using a baculovirus expression system and shown to contain 71 aa residues. RecombinantEotaxin-3/CCL26 is chemotactic for eosinophils and PHA-activated T cells. Eotaxin-3/CCL26 induces calcium flux in eosinophils as well as in CCR3-transfected cells. Eotaxin-3/CCL26 has also been shown to cross-desensitize cells to other CCR3 ligands. Both the 71 aa residue and 68 aa residue variants of recombinant Eotaxin-3 have been expressed in E. coli and found to have equal potency in inducing chemotaxis of a human CCR3-transfected cell line.

  • References:
    1. Gou, R-F. et al. (1999) Genomics 58:313.
    2. Kitamura, M. et al. (1999) J. Biol. Chem. 274:27975.
    3. Shinkai, A. et al. (1999) J. Immunol. 163:1602.
  • Entrez Gene IDs:
    10344 (Human)
  • Alternate Names:
    CC chemokine IMAC; C-C motif chemokine 26; CCL26; chemokine (C-C motif) ligand 26; chemokine N1; Eotaxin3; Eotaxin-3; IMAC; Macrophage inflammatory protein 4-alpha; MGC126714; MIP-4a; MIP-4alpha; SCYA26; SCYA26MIP-4-alpha; small inducible cytokine A26; small inducible cytokine subfamily A (Cys-Cys), member 26; Small-inducible cytokine A26; TSC-1Thymic stroma chemokine-1
Related Research Areas
Citations:

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.

2 Citations: Showing 1 - 2
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Species
Applications
Sample Type
  1. Widespread potential for growth-factor-driven resistance to anticancer kinase inhibitors.
    Authors: Wilson TR, Fridlyand J, Yan Y, Penuel E, Burton L, Chan E, Peng J, Lin E, Wang Y, Sosman J, Ribas A, Li J, Moffat J, Sutherlin DP, Koeppen H, Merchant M, Neve R, Settleman J
    Nature, 2012;487(7408):505-9.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  2. Distribution, cellular localization and functional role of CCR2 chemokine receptors in adult rat brain.
    Authors: Banisadr G, Queraud-Lesaux F, Boutterin MC, Pelaprat D, Zalc B, Rostene W, Haour F, Parsadaniantz SM
    J. Neurochem., 2002;81(2):257-69.
    Species: Rat
    Sample Type: Whole Tissue
    Application: Binding Study

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