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5ugHuman TARC,重组人胸腺活化调节趋化因子
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- 上海高创化学科技有限公司
- 2016-07-12 20:36:47
- 上海市
- 617
【简单介绍】
【详细说明】
| Catalogue Number | CHM-240 | ||
| Synonyms | C-C motif chemokine 17, Small-inducible cytokine A17, Thymus and activation-regulated chemokine, CC chemokine TARC, ABCD-2, CCL17, CCL-17, SCYA17, TARC, A-152E5.3, MGC138271, MGC138273. | ||
| Introduction | TARC cDNA encodes a 94 amino acid precursor protein with a 23 amino acid residue signal peptide that is cleaved off to generate the 71 amino acid residue mature secreted protein. Along with CC chemokine family members, CCL-17 has approximay 24-29% amino acid sequence identity with RANTES, MIP-1?, MIP-1?, MCP-1, MCP-2, MCP-3 and I-309. TARC is expressed in thymus, and at a lower level in the lung, colon, and small intestine. TARC is in addition transiently expressed in stimulated peripheral blood mononuclear cells. Recombinant TARC has been shown to be chemotactic for T cell lines but not monocytes or neutrophils. CCL-17 was recently identified to be a specific functional ligand for CCR4, a receptor that is selectively expressed on T cells. CCL17 is one of quite a few Cys-Cys （CC） cytokine genes clustered on the q arm of chromosome 16. CCL17 shows chemotactic activity for T lymphocytes, but not monocytes or granulocytes. CCL17 binds to chemokine receptors CCR4 and CCR8. This chemokine plays important roles in T cell development in thymus as well as in trafficking and activation of mature T cells. | ||
| Description | CCL17 Human Recombinant produced in E.Coli is a single,non-glycosylated, polypeptide chain containing 71 amino acids and having a molecular mass of 8 kDa. The TARC is purified by proprietary chromatographic techniques. | ||
| Source | Escherichia Coli. | ||
| Physical Appearance | Sterile Filtered White lyophilized （freeze-dried） powder. | ||
| Formulation | The protein was lyophilized from a concentrated （0.5mg/ml） solution containing 20mM PBS & 150mM NaCl pH-7.4. | ||
| Solubility | It is recommended to reconstitute the lyophilized CCL17 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions. | ||
| Stability | Lyophilized TARC although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TARC should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）. Please prevent freeze-thaw cycles. | ||
| Biological Activity | Determined by its ability to chemoattract human T-Lymphocytes using a concentration range of 1.0-10.0 ng/ml corresponding to a Specific Activity of 100,000-1,000,000IU/mg. | ||
| Purity | Greater than 97.0% as determined by（a） Analysis by RP-HPLC. （b） Analysis by SDS-PAGE. | ||
| Amino acid sequence | ARGTNVGRECCLEYFKGAIPLRKLKTWYQTSEDCSRD AIVFVTVQGRAICSDPNNK RVKNAVKYLQSLERS. | ||
| Usage | ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals. | ||
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