Product Details
Synonyms
Activin A, INHBA
Source
Human Latent Activin A, His Tag (ACA-H424x) is expressed from human 293 cells (HEK293). It contains AA Ser 21 - Ser 426 (Accession # P08476-1).
Predicted N-terminus: His
Request for sequenceMolecular Characterization

Other Tags and Version Biotin & Other Labeled Version
This protein carries a polyhistidine tag at the N-terminus.
The protein has a calculated MW of 45.9 kDa. The protein migrates as 15 kDa and 40-45 kDa under reducing (R) condition, and 24 kDa, 40-45 kDa and 60 kDa under non-reducing (NR) condition (SDS-PAGE) due to glycosylation.
Endotoxin
Less than 1.0 EU per μg by the LAL method / rFC method.
Purity
>95% as determined by SDS-PAGE.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
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Performance Data
SDS-PAGE

Human Latent Activin A, His Tag on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
Bioactivity-ELISA

Immobilized Human Latent Activin A, His Tag (Cat. No. ACA-H424x) at 10 μg/mL (100 μL/well) can bind Human ACVR2A, Fc Tag (Cat. No. ACA-H5269) with a linear range of 0.6-20 ng/mL (QC tested).
Protocol
Immobilized Human Latent Activin A, His Tag (Cat. No. ACA-H424x) at 5 μg/mL (100 μL/well) can bind Biotinylated Human Activin RIIB Protein, His,Avitag (Cat. No. ACB-H82E3) with a linear range of 0.005-0.313 μg/mL (Routinely tested).
Protocol
Bioactivity-SPR

Biotinylated Human Activin RIIB Protein, His,Avitag (Cat. No. ACB-H82E3) immobilized on CM5 Chip can bind Human Latent Activin A, His Tag (Cat. No. ACA-H424x) with an affinity constant of 0.147 nM as determined in a SPR assay (Biacore 8K) (Routinely tested).
Protocol
Bioactivity-CELL BASE

The bio-activity of Human Latent Activin A, His Tag (Cat. No. ACA-H424x) was determined by dose-dependent inhibition of the proliferation of MPC-11 cells. The EC50 for this effect is typical 47-66 ng/mL (Routinely tested).
Protocol
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