Human recombinant Activin B protein, AF
Activin B is the cytokine of the TGF-beta family, which is a 13 kDa protein containing 115 amino acid residues. Activin B has the wide variety of biological function including stem cell differentiation, inflammation, bone remodeling and neural development. They also have a role in regulation of FSH secretion. Activin B induces the phosphorylation of Smad which binds the smad binding element.
Product Specifications
Synonyms
Activin Beta B, INHBB; inhibin beta B chain
Gene Name
INHBB
UniProt
P09529
Reactivity
Human
Tag
His Tag (C-term)
Source
Escherichia coli
Applications
Cell Culture
Purification
>98% as determined by SDS-PAGE.
Endotoxin
<0.1 EU per 1 μg of the protein by the LAL method.
Bioactivity
Measure by its ability to induce hemoglobin expression in K562 cells. The ED50 for this effect is <0.7 ng/mL. The specific activity of recombinant human Activin B is > 1.5 x 106 IU/mg.
Form
The protein was lyophilized from a 0.2 μm filtered solution containing 1X PBS, pH 8.0. If you have any concerns or special requirements, please confirm with us.
Reconstitution
Centrifuge at 3000 rpm for 5 mins before opening. It is recommended to reconstitute the lyophilized protein in sterile H2O to a concentration not less than 100 μg/mL and incubate the stock solution at room temperature for at least 20 mins to ensure sufficient re-dissolved. Do Not Vortex! Vigorous shaking may impair the biological activity of the protein.
Molecular Weight
The protein has a calculated MW of 13.75 kDa. The protein migrates as 17 kDa under reducing condition (SDS-PAGE analysis) .
Storage Conditions
Lyophilized protein should be stored at -20°C for 1 year. Upon reconstitution, store at 2°C to 8°C for up to 1 week. Further dilute in a buffer containing a carrier protein or stabilizer (e.g. 0.1% BSA, 10%FBS, 5%HSA or 5% trehalose solution), protein aliquots should be stored at -20°C or -80°C for 3-6 months. Avoid repeated freeze/thaw cycles.
AA Sequence
MGLECDGRTNLCCRQQFFIDFRLIGWNDWIIAPTGYYGNYCEGSCPAYLAGVPGSASSFHTAVVNQYRMRGLNPGTVNSCCIPTKLSTMSMLYFDDEYNIVKRDVPNMIVEECGCA with polyhistidine tag at the C-terminus.
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