Description:
Recombinant Human Exodus-2 is also known as SLC (Secondary Lymphoid-Tissue Chemokine), TCA-4 (T-cell activation-4) , and 6Ckine.
It is produced in E.Coli as a single, non-glycosylated, polypeptide chain containing
111 amino acids and having a molecular mass of 12219 Dalton. Purified by proprietary chromatographic techniques.

Source:
Escherichia Coli.

Formulation:
Lyophilized from a concentrated (1mg/ml) solution in water containing no additives.

Solubility:
It is recommended to reconstitute the lyophilized Exodus-2 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Stability:
Lyophilized Exodus-2 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Exodus-2 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.

Purity:
Greater than 98.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Anion-exchange FPLC.
(c) Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.

Amino acid sequence:
The sequence of the first five N-terminal amino acids was determined and was found to be, Ser-Asp-Gly-Gly-Ala.

Dimers and aggregates:
Less than 1% as determined by silver-stained SDS-PAGE gel.

Biological Activity:
Fully biologically active when compared to standard.
The Activity is calculated by the ability to chemoattract lymphocytes using a concentration of 10-100 ng/ml.

Endotoxin:
Less than 0.1 ng/µg (IEU/µg)

Protein content:
Protein 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.