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You are here:Home » Molecular Biology » MB-Growth Factors-Exodus » Exodus 2, Recombinant, Human (SLC, Secondary Lymphoid-tissue Chemokine, 6Ckine, TCA4)

Exodus 2, Recombinant, Human (SLC, Secondary Lymphoid-tissue Chemokine, 6Ckine, TCA4)


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SLC/CCL21, normally expressed in high endothelial venules and in T cell zones of spleen and lymph nodes, strongly attracts T cells and dendritic cells (DC). Secondary lymphoid tissue chemokine (CCL21/SLC) regulates the homing of naive T cells and dendritic cells that express CC-chemokine receptor 7 (CCR7) from distant sites to lymphoid tissue such as lymph nodes.
Catalog #E9005-08H
DescriptionRecombinant Human Exodus-2 is also known as SLC (Secondary Lymphoid-Tissue Chemokine), TCA-4 (T-cell activation-4) , and 6Ckine. Recombinant CCL21 produced in E.Coli as a single, non-glycosylated, polypeptide chain containing 111 amino acids and having a molecular mass of 12219 Dalton. Recombinant CCL-21 is purified by proprietary chromatographic techniques.
Amino Acid SequenceThe sequence of the first five N-terminal amino acids was determined and was found to be, Ser-Asp-Gly-Gly-Ala.
Dimers and AggregatesLess than 1% as determined by silver-stained SDS-PAGE gel analysis.
Biological ActivityRecombinant Human Exodus-2 is fully biologically active when compared to standard. The activity is determined by the chemoattract of human PBE (peripheral blood eosinophils) at a concentration between 0.1-10ng/ml.
Endotoxin 0.1ng/ug (IEU/ug) of Exodus-2.
Protein ContentProtein quantitation was carried out by two independent methods:
1. UV spectroscopy at 280 nm.
2. Analysis by RP-HPLC, using a calibrated solution of Exodus-2 as a Reference Standard.
SolubilityIt is recommended to reconstitute the lyophilized Exodus-2 in sterile 18M -cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
StabilityLyophilized Exodus-2 although stable at room temperature for 3 weeks, should be stored desiccated below -180C. Upon reconstitution Exodus-2 should be stored at 40C between 2-7 days and for future use below -180C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please avoid freeze-thaw cycles.
Molecular Weight12.22kD
SourceE. coli
Purity98% as determined by RP-HPLC, anion-exchange FPLC and/or reducing and non-reducing SDS-PAGE Silver Stained gel.
FormSupplied as a lyophilized powder without additives.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

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