Recombinant Rat CCL20 (MIP-3α) (carrier-free)

Pricing & Availability
Regulatory Status
Other Names
Macrophage inflammatory protein-3ž€ (MIP-3alpha), Liver and activation-regulated chemokine (LARC), Exodus, and ST38
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Product Citations
Baf3-hCCR6 transfectants chemoattracted by rat CCL20.
  • CCL20_Rat_Recombinant_Protein_BA_072513
    Baf3-hCCR6 transfectants chemoattracted by rat CCL20.
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590102 10 µg $138
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590104 25 µg $281
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Rat CCL20 was initially identified in ischemic brain tissue and called ST38. In experimental autoimmune panencephalomyelitis, CCL20 expression correlates with the onset of inflammation. In experimental autoimmune encephalomyelitis (EAE), CCL20 and CCR6 mRNAs are induced in the CNS of SJL mice; CCL20 is expressed mainly by CNS-infiltrating leukocytes, and it can be expressed by astrocytes as an additional source of CCL20 during disease relapses. CCL20 is involved in the recruitment of leukocytes to sites of injury and inflammation. CCL20 is constitutively expressed in liver, lung, and mucosal epithelial cells (small intestine and colon).  CCL20 is expressed at a low basal level, but its expression is amplified by proinflammatory cytokines and toll-like receptor (TLR) agonists. During infections, CCL20 expression is stimulated in epithelial cells, and immature CCR6+ dendritc cells (DCs) are recruited. Thereafter, the CCR6 expression is downregulated during DC maturation and these migrate to the lymphoid node under the expression of CCR7.  CCL20 is the only ligand for CCR6. Nevertheless, mouse and human β-defensin-1 and -2, small cationic antimicrobial peptides, bind and activate CCR6. Contrarily, these β-defensins have lower affinities for CCR6 than CCL20. 

Product Details
Technical data sheet

Product Details

Rat CCL20, amino acids Ala26-Met96 (Accession# NM_019233) was expressed in E.coli.
Molecular Mass
The 71 amino acid recombinant protein has a predicted molecular mass of approximately 8.2 kD. The DTT-reduced protein migrates at approximately 8 kD and non-reduced protein at approximately 10 kD by SDS-PAGE. The N-terminal amino acid is Ala.
>95%, as determined by Coomassie stained SDS-PAGE.
0.22 µm filtered protein solution is in PBS.
Endotoxin Level
Less than 0.01 ng per µg cytokine as determined by the LAL method.
10 and 25 µg sizes are bottled at 200 µg/mL.
Storage & Handling
Unopened vial can be stored between 2°C and 8°C for up to 2 weeks, at -20°C for up to six months, or at -70°C or colder until the expiration date. For maximum results, quick spin vial prior to opening. The protein can be aliquoted and stored at -20°C or colder. Stock solutions can also be prepared at 50 - 100 µg/mL in appropriate sterile buffer, carrier protein such as 0.2 - 1% BSA or HSA can be added when preparing the stock solution. Aliquots can be stored between 2°C and 8°C for up to one week and stored at -20°C or colder for up to 3 months. Avoid repeated freeze/thaw cycles.
Bioactivity was measured by its property to chemoattract Baf3-hCCR6 transfectants in a dose dependent manner.


Application Notes

BioLegend carrier-free recombinant proteins provided in liquid format are shipped on blue-ice. Our comparison testing data indicates that when handled and stored as recommended, the liquid format has equal or better stability and shelf-life compared to commercially available lyophilized proteins after reconstitution. Our liquid proteins are verified in-house to maintain activity after shipping on blue ice and are backed by our 100% satisfaction guarantee. If you have any concerns, contact us at

Antigen Details

CCL20 is expressed in activated cells, including monocytes, T cells, endothelial cells, fibroblasts, Keratinocytes, synoviocytes, dendritic cells, pulmonary and intestinal epithelial cells, and dermal microvascular endothelial cells. CCL20 is induced in astrocytes, miroglia, and macrophages during inflammation.
CCL20 chemoattracts immature DCs at sites of injury. CCL20 is upregulated by mediators of inflammation such as TNF or LPS. Also, CCL20 is induced by Th17 cytokines (IL-17A, IL-22, and TNFα) in keratinocytes. CCL20 expression is inhibited by IFNγ and IL-4 in synoviocytes.
T cells, Th17, Tregs, B cells, DC subsets including CD11b+ CD8α-myeloid DC, Langerhans cells (LCs), CD34+ cell-derived immature myeloid DCs, and immature monocyte-derived DCs.
CCR6 (CD196)
Cell Type
Hematopoietic stem and progenitors
Biology Area
Cell Biology, Signal Transduction, Stem Cells
Molecular Family
Antigen References

1. Utans-Schneitz U, et al. 1998. J. Neuroimmunol. 92:179.
2. Varona R, et al. 1998. FEBS 440:188.
3. Homey B, et al. 2000. J. Immunol. 164: 6621.
4. Hoover DM, et al. 2002. J. Biol. Chem. 277:37647.
5. Ambrosini E, et al. 2003. Glia 41:290.
6. Hirota K, et al. 2007. J. Exp. Med. 204:2803.
7. Harper EG, et al. 2009. J. Invest. Dermatol. 129:2175.
8. Ito T, et al. 2011. Exp. Cell Res. 317:613.

Gene ID
29538 View all products for this Gene ID
View information about CCL20 on

Related FAQs

Why choose BioLegend recombinant proteins?

     • Each lot of product is quality-tested for bioactivity as indicated on the data sheet.
     • Greater than 95% Purity or higher, tested on every lot of product.
     • 100% Satisfaction Guarantee for quality performance, stability, and consistency.
     • Ready-to-use liquid format saves time and reduces challenges associated with reconstitution.
     • Bulk and customization available. Contact us.
     • Learn more about our Recombinant Proteins.

How does the activity of your recombinant proteins compare to competitors?

We quality control each and every lot of recombinant protein. Not only do we check its bioactivity, but we also compare it against other commercially available recombinant proteins. We make sure each recombinant protein’s activity is at least as good as or better than the competition’s. In order to provide you with the best possible product, we ensure that our testing process is rigorous and thorough. If you’re curious and eager to make the switch to BioLegend recombinants, contact your sales representative today!

What is the specific activity or ED50 of my recombinant protein?

The specific activity range of the protein is indicated on the product datasheets. Because the exact activity values on a per unit basis can largely fluctuate depending on a number of factors, including the nature of the assay, cell density, age of cells/passage number, culture media used, and end user technique, the specific activity is best defined as a range and we guarantee the specific activity of all our lots will be within the range indicated on the datasheet. Please note this only applies to recombinants labeled for use in bioassays. ELISA standard recombinant proteins are not recommended for bioassay usage as they are not tested for these applications.

Have your recombinants been tested for stability?

Our testing shows that the recombinant proteins are able to withstand room temperature for a week without losing activity. In addition the recombinant proteins were also found to withstand four cycles of freeze and thaw without losing activity.

Does specific activity of a recombinant protein vary between lots?

Specific activity will vary for each lot and for the type of experiment that is done to validate it, but all passed lots will have activity within the established ED50 range for the product and we guarantee that our products will have lot-to-lot consistency. Please conduct an experiment-specific validation to find the optimal ED50 for your system.

How do you convert activity as an ED50 in ng/ml to a specific activity in Units/mg?
Use formula Specific activity (Units/mg) = 10e6/ ED50 (ng/mL)
Go To Top Version: 2    Revision Date: 09/12/2016

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*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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