Recombinant Human Eotaxin(CCL11) - rHuEotaxin



Data Sheet
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Recombinant Human Eotaxin(CCL11) - rHuEotaxin

Description: Recombinant Human Eotaxin produced in E.Coli is a single, non-glycosylated polypeptide chain containing 74 amino acids and having a molecular mass of 8345.9 Dalton. The rHuEotaxin is purified by proprietary chromatographic techniques.
Physical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation: Lyophilized from a concentrated (1mg/ml) solution in water containing no additives.
Solubility: It is recommended to reconstitute the lyophilized rHuEotaxin in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Stability: Lyophilized rHuEotaxin although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rHuEotaxin 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 Gly-Pro-Ala-Ser-Val.
Dimers and aggregates: Less than 1% as determined by silver-stained SDS-PAGE gel analysis.
Biological Activity: ProSpec's rHuEotaxin 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: Less than 0.1 ng/µg (IEU/µg) of rHuEotaxin.
Protein content: Protein quantitation was carried out by two independent methods: UV spectroscopy at 280 nm using the absorbency value of 1.013 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). Analysis by RP-HPLC, using a standard solution of Eotaxin as a Reference Standard.
Usage: This material is offered for research, laboratory or further manufacturing purposes.