Recombinant Cynomolgus EGFR Protein (His Tag)

Beta LifeScience SKU/CAT #: BLPSN-1727

Recombinant Cynomolgus EGFR Protein (His Tag)

Beta LifeScience SKU/CAT #: BLPSN-1727
Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

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Product Overview

Tag His
Host Species Cynomolgus
Accession XP_005549616.1
Background As a member of the epidermal growth factor receptor (EGFR) family, EGFR protein is type I transmembrane glycoprotein that binds a subset of EGF family ligands including EGF, amphiregulin, TGF-alpha, betacellulin, etc. EGFR protein plays a crucial role in signaling pathway in the regulation of cell proliferation, survival and differentiation. Binding of a ligand induces EGFR protein homo- or heterodimerization, the subsequent tyrosine autophosphorylation and initiates various down stream pathways (MAPK, PI3K/PKB and STAT). In addition, EGFR signaling also has been shown to exert action on carcinogenesis and disease progression, and thus EGFR protein is proposed as a target for cancer therapy currently.Immune CheckpointImmunotherapyCancer ImmunotherapyTargeted Therapy
Description A DNA sequence encoding the cynomolgus EGFR (XP_005549616.1) (Met1-Ser645) was expressed with a His tag at the C-terminus.
Source Baculovirus-Insect Cells
Predicted N Terminal Leu 25
AA Sequence Met1-Ser645
Molecular Weight The recombinant cynomolgus EGFR consists of 632 a.a. and predicts a molecular mass of 70.1 kDa.
Purity >95% as determined by SDS-PAGE.
Endotoxin < 1.0 EU per μg protein as determined by the LAL method.
Bioactivity 1.Measured by its binding ability in a functional ELISA. 2.Immobilized cynomolgus EGFR at 10ug/mL (100uL/well) can bind mouse EGF, the EC50 of mouse EGF is 6-40ng/mL.
Formulation Lyophilized from sterile 20 mM Tris, 500 mM NaCl, pH 8.0..
Stability The recombinant proteins are stable for up to 1 year from date of receipt at -70°C.
Usage For Research Use Only
Storage Store the protein under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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