Recombinant Rat CCL27/CTACK Protein
R&D Systems, part of Bio-Techne | Catalog # 4434-CK
Key Product Details
Product Specifications
Source
E. coli-derived rat CCL27/CTACK protein
Leu70-Lys164
Leu70-Lys164
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
N-terminal Sequence Analysis
Leu70
Predicted Molecular Mass
10.9 kDa
Activity
Measured by its ability to chemoattract BaF3 mouse pro-B cells transfected with human CCR10.
The ED50 for this effect is 0.15-0.75 µg/mL.
The ED50 for this effect is 0.15-0.75 µg/mL.
Formulation, Preparation and Storage
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.
Carrier: 4434-CK
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein. |
| Reconstitution | Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin. |
| 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.
|
Carrier Free: 4434-CK/CF
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| 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. |
| Stability & Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Background: CCL27/CTACK
CCL27, also known as CTACK (cutaneous T cell-attracting chemokine), ALP, ILC, and ESkine, is a member of the CC family of chemokines (1). Sequence comparison of the rat CCL27 with the mature human and mouse CCL27 suggests that the mature rat CCL27 is a 95 amino acid (aa) protein. It shares 57% and 87% aa sequence identity with human and mouse CCL27, respectively (2). It shares 16% - 33% aa sequence identity with other rat CC chemokines. An alternately spliced form of mouse CCL27, known as PESKY, is localized to the nucleus and promotes cellular migration (3). CCL27 is constitutively expressed by keratinocytes and is upregulated by inflammatory stimuli and wounds in skin (4 - 7). CCL27 binds CCR10, glycosaminoglycans in the extracellular matrix, sulfated tyrosine residues on PSGL-1, and determinants on the surface of fibroblasts and endothelial cells (5, 7 - 9). CCL27 cooperates with CCL17/TARC in inducing the migration of cutaneous lymphocyte antigen (CLA) positive memory T cells to the skin during inflammation (4, 6, 10 - 12). Endothelial cell-bound CCL27 can mediate the adhesion of endothelium to CLA+ T cells (6). CCL27 also induces the migration of keratinocyte precursors from bone marrow to the skin, thereby promoting wound healing (7). In humans, serum CCL27 levels are elevated and correlate with disease severity in atopic dermatitis, psoriasis vulgaris, and mycosis fungoides (13 - 15).
References
- Kunkel, L. and E.C. Butcher (2002) Immunity 16:1.
- Accession # NP_001102130.
- Gortz, A. et al. (2002) J. Immunol. 169:1387.
- Morales, J. et al. (1999) Proc. Natl. Acad. Sci. 96:14470.
- Homey, B. et al. (2000) J. Immunol. 164:3465.
- Homey, B. et al. (2002) Nat. Med. 8:157.
- Inokuma, D. et al. (2006) Stem Cells 24:2810.
- Jarmin, D. et al. (2000) J. Immunol. 164:3460.
- Hirata, T. et al. (2004) J. Biol. Chem. 279:51775.
- Vestergaard, C. et al. (2004) Exp. Dermatol. 13:551.
- Reiss, Y. et al. (2001) J. Exp. Med. 194:1541.
- Soler, D. et al. (2003) Blood 101:1677.
- Kakinuma, T. et al. (2003) J. Allergy Clin. Immunol. 111:592.
- Hijnen, D. et al. (2004) J. Allergy Clin. Immunol. 113:334.
- Fujita, Y. et al. (2006) Clin. Cancer Res. 12:2670.
Alternate Names
CTACK, ILC
Gene Symbol
CCL27
UniProt
Additional CCL27/CTACK Products
Product Documents for Recombinant Rat CCL27/CTACK Protein
Product Specific Notices for Recombinant Rat CCL27/CTACK Protein
For research use only
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