Recombinant Human CCL17/TARC

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Hersteller Cell Sciences
Kategorie
Typ Proteins
Specific against Human
Menge 20 ug
Host E.coli
ArtNr CS-CRT200B
eClass 6.1 34160400
eClass 9.0 42020190
Lieferbar
Description
TARC/CCL17 is a novel CC chemokine recently identified using a signal sequence trap method. CCL17 cDNA encodes a highly basic 94 amino acid (a.a.) residue precursor protein with a 23 a.a. residue signal peptide that is cleaved to generate the 71 a.a. residue mature secreted protein. Among CC chemokine family members, CCL17 has approximately 24-29% amino acid sequence identity with RANTES, MIP-1alpha, MIP-1beta, MCP-1, MCP-2, MCP-3 and I-309. The gene for human CCL17 has been mapped to chromosome 16q13 rather than chromosome 17 where the genes for many human CC chemokines are clustered. CCL17 is constitutively expressed in thymus, and at a lower level in lung, colon, and small intestine. CCL17 is also transiently expressed in stimulated peripheral blood mononuclear cells. Recombinant CCL17 has been shown to be chemotactic for T cell lines but not monocytes or neutrophils. CCL17 was recently identified to be a specific functional ligand for CCR-4, a receptor that is selectively expressed on T cells.
Formulation
Lyophilized from a 0.2 um filtered concentrated solution in 20 mM PB, pH 7.4 + 150 mM NaCl.
Reconstitution
Centrifuge vial prior to opening. Add sterile distilled water or aqueous buffer to a concentration of 0.1-1.0 mg/mL. Further dilutions should be made in appropriate buffered solutions.
Storage and Stability
Stable at 2-8C, but best kept desiccated -20C. Upon reconstitution, stable for up to 1 week at 2-8C. For longer term, store in working aliquots below -20C. Avoid repeated freeze/thaw cycles.
GeneID
6361
Source
E. coli
Molecular Weight
8.0 kDa
Purity
>97% by SDS-PAGE and HPLC
Endotoxin Level
Less than 1EU/ug of rHuTARC/CCL17 as determined by LAL method.
Biological Activity
Fully biologically active when compared to standard. The ED50 determined by a chemotaxis bioassay using human T-lymphocytes is less than 10 ng/ml
AA Sequence
ARGTNVGREC CLEYFKGAIP LRKLKTWYQT SEDCSRDAIV FVTVQGRAIC SDPNNKRVKN AVKYLQSLER S

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Menge: 20 ug
Lieferbar: In stock
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