Epidermal Growth Factor Human

Description

Recombinant Human EGF produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 53 amino acids and having a molecular mass of 6222 Dalton. The rHuEGF is purified by proprietary chromatographic techniques.

Amino Acid Sequence

Source

E. coli

Purity

Greater than 98.0% as determined by:

• (a) Analysis by RP-HPLC.
• (b) Anion-exchange FPLC.
• © Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.

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

Biological Activity

BioVendor´s re­combinant human EGF is fully biologically active when compared to standards. The ED50, calculated by the dose-dependant proliferation of murine BALB/c 3T3 cells (measured by ³H-thymidine uptake) is < 0.1 ng/ml corresponding to a specific activity of 1×10⁷ Units/mg.

Endotoxin

Less than 0.1 ng/µg (IEU/µg) of rHuEGF.

Formulation

The protein was lyophilized from a concentrated (1mg/mL) solution with no additives.

Reconstitution

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

Storage, Stability/Shelf Life

Lyophilized rHuEGF although stable at room temperature for 3 weeks, should be stored desiccated below –18°C. Upon reconstitution rHuEGF 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.

Physical Appearance

Sterile Filtered White lyophilized (freeze-dried) powder.

By molecule:

• Epidermal Growth Factor