Recombinant Human/Cynomolgus Activin RIIB/ACVR2B Protein, Endotoxin-Free

Name: Recombinant Human/Cynomolgus Activin RIIB/ACVR2B Protein, Endotoxin-Free, Active
Brand: Beta LifeScience
SKU: BLK-03158P
Availability: InStock

Human/Cynomolgus Activin RIIB on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.

Collections: All products, High-quality 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

Description	Recombinant Human/Cynomolgus Activin RIIB/ACVR2B Protein is expressed from HEK293 with hFc tag at the C-terminus.It contains Ser19-Thr137 (Human) / Ser40-Thr158 (Cynomolgus).
Gene Background	ActRIIB (activin receptor type-2B) is an activin receptor subtype constitutively expressed in the whole body, playing a role in cellular proliferation, differentiation, and metabolism. For its various physiological activities, ActRIIB interacts with activin and multiple other ligands including myostatin (MSTN), growth differentiation factor 11 (GDF11), and bone morphogenetic protein 9 (BMP9).
Accession	Q13705-1(Human) / XP_045242398.1(Cynomolgus)
Target Symbol	Activin RIIB/ACVR2B
Synonyms	Activin receptor type-2B; ACVR2B; Activin RIIB; ActRIIB
Species	Human/Cynomolgus
Expression System	Mammalian Cell
Purity	> 95% as determined by Bis-Tris PAGE;> 95% as determined by HPLC
Tag	C-hFc
Expression Range	Ser19-Thr137 (Human) / Ser40-Thr158 (Cynomolgus)
Mol. Weight	The protein has a predicted MW of 39.6 kDa. Due to glycosylation, the protein migrates to 55-70 kDa based on Bis-Tris PAGE result.
Form	Lyophilized
Formulation	Lyophilized from 0.22 um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Endotoxin	Less than 0.001 EU per ug by the LAL method.
Activity	Immobilized Human Activin A, No Tag at 1ug/ml (100ul/well) on the plate. Dose response curve for Human/Cynomolgus Activin RIIB, hFc Tag with the EC50 of 4.2ng/ml determined by ELISA (QC Test). The affinity constant of 26.57 pM as determined in SPR assay (Biacore T200).
Biotinylated	No
Shipping	Shipped at ambient temperature.
Storage	-20 to -80°C for 12 months as supplied from date of receipt.； -80°C for 3 months after reconstitution.； Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Reconstitution	Dissolve the lyophilized protein in distilled water. It is recommended to resuspend at 0.5 mg/mL if the lyophilized powder is 100 ug or less, at 1mg/ml for 500ug or 1mg lyophilized powder. Do not mix by vortex or vigorous shaking.

FAQs

Please fill out the Online Inquiry form located on the product page. Key product information has been pre-populated. You may also email your questions and inquiry requests to sales1@betalifesci.com. We will do our best to get back to you within 4 business hours.

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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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Recombinant Human/Cynomolgus Activin RIIB/ACVR2B Protein, Endotoxin-Free, Active

Recombinant Human/Cynomolgus Activin RIIB/ACVR2B Protein, Endotoxin-Free, Active

Product Overview

FAQs