Recombinant TGF alpha Protein

Name: Recombinant TGF alpha Protein
Brand: Beta LifeScience
SKU: BLA-1920P
Availability: InStock

Collections: Cytokines and growth factors, Growth factors and receptors, Recombinant proteins

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

Host Species	Human
Accession	P01135
Synonym	EGF like TGF EGF-like TGF ETGF TFGA TGF A TGF type 1 TGF-alpha Tgfa TGFA_HUMAN Transforming growth factor alpha Transforming growth factor alpha precursor Wa1 Waved 1
Description	Recombinant TGF alpha Protein was expressed in E.coli. It is a Full length protein
Source	E.coli
AA Sequence	VVSHFNDCPD SHTQFCFHGT CRFLVQEDKP ACVCHSGYVG ARCEHADLLA
Molecular Weight	6 kDa
Purity	>98% SDS-PAGE.Sterile filtered Greater than 98% pure by SDS-PAGE and HPLC analyses.Endotoxin level is less than 0.1 ng per µg (1EU/µg).
Endotoxin	< 1.0 EU per μg of the protein as determined by the LAL method
Bioactivity	The ED50as determined by the dose-dependent stimulation of thymidine uptake by BALB/c 3T3 cells is -‰¤ 0.2 ng/ml, corresponding to a specific activity of -‰¥ 5 x 106 units/mg.
Formulation	Lyophilised
Stability	The recombinant protein samples are stable for up to 12 months at -80°C
Reconstitution	See related COA
Unit Definition	For Research Use Only
Storage Buffer	Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.

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.