货号价格

ARB-HM12B-100μg / 询价

ARB-HM12B-500μg / 询价

ARB-HM12B-500μgx2 / 询价

Human Activin RIIB/ACVR2B Protein

产品信息(Product Info)
表达区间及表达系统(Source)

Recombinant Human Activin RIIB/ACVR2B Protein is expressed from HEK293 with His tag at the C-Terminus. It contains Ser19-Thr137.[Accession | Q13705-1]

分子量大小(Molecular Weight)

The protein has a predicted MW of 14.75 kDa. Due to glycosylation, the protein migrates to 25-45 kDa based on Tris-Bis PAGE result.

内毒素(Endotoxin)

Less than 1EU per μg by the LAL method.

纯度(Purity)

> 95% as determined by Tris-Bis PAGE
> 95% as determined by HPLC

制剂(Formulation)

Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

重构方法(Reconstitution)

Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

存储(Storage)

-20 to -80°C for 12 months as supplied from date of receipt.
-80°C for 3-6 months after reconstitution.
2-8°C for 2-7 days after reconstitution.
Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.

产品数据(Assay Data)
Tris-Bis PAGE

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

SEC-HPLC

The purity of Human Activin RIIB is greater than 95% as determined by SEC-HPLC.

ELISA Data

Immobilized Human Activin A, No Tag at 1μg/ml (100μl/well) on the plate. Dose response curve for Human Activin RIIB, His Tag with the EC50 of 21.4ng/ml determined by ELISA (QC Test).

ELISA Data

Immobilized Human Activin RIIB, His Tag at 0.5μg/ml (100μl/well) on the plate. Dose response curve for Anti-Activin RIIB Antibody, hFc Tag with the EC50 of 4.3ng/ml determined by ELISA.

SPR Data

Human Activin RIIB, His Tag captured on CM5 Chip via anti-his antibody can bind Human Activin A  with an affinity constant of 27.92 pM as determined in SPR assay (Biacore T200).

背景(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).

分子别名(Synonyms)

Activin receptor type-2B; ACVR2B; Activin RIIB

文献(References)

Sakamoto K, Kanematsu-Yamaki Y, Kamada Y, Oka M, Ohnishi T, Miwa M, Asami T, Inooka H. Identification of ligand-selective peptidic ActRIIB-antagonists using phage display technology. Biochem Biophys Rep. 2017 Jun 10;11:33-39. doi: 10.1016/j.bbrep.2017.06.001. PMID: 28955765; PMCID: PMC5614685.

Note: HPLC results always come from liquid protein, due to absorption peak interference of trehalose in lyophilized powder.