Recombinant Human Activin A
DescriptionActivin A is a member of the Transforming Growth Factor β (TGF-β) family of proteins with a wide range of biological activities. Activins are produced in many tissue types including the skin, gonads, lungs, and pituitary gland. Activins interact with receptor type I and type II serine/threonine protein kinases, to activate SMAD signaling and regulate diverse cellular functions, such as cell proliferation, differentiation, wound healing, apoptosis, and metabolism. Activin A is a homodimer comprised of two activin β A chains. Human Activin A shares 100% amino acid sequence identity with mouse, rat, porcine, bovine, and feline Activin A proteins.
Activity AssayHuman Activin A is fully biologically active when compared to standard. The activity is determined using MPC-11 cells and it is typically 1.6 - 3.1 ng/ml. In addition to the standard assay, the activity of this product has been verified in the lab of Dr Josué Mfopou Kunjom (VUB - Diabetes Research Centre) - by analysis of CXCR4 in definitive endoderm.
AA SequenceMGNICAKKQF FVSFKDIGWN DWIIAPSGYH ANYCEGECPS HIAGTSGSSL SFHSTVINHY RMRGHSPFAN LKSCCVPTKL RPMSMLYYDD GQNIIKKDIQ NMIVEECGCS
Alternative NamesInhibin β-1, FRP, FSH-releasing protein, EDF, erythroid differentiation factor, FRP, follicle stimulating hormone releasing protein, Activin-A
|Molecular Weight||24.4 kDa|
|Purity||≥95% determined by reducing and non-reducing SDS-PAGE|
|Endotoxin Level||≤1.00 EU/μg as measured by kinetic LAL|
|Formulation||Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 0.1% Trifluoroacetic Acid (TFA)|
|Reconstitution||Centrifuge vial before opening. When reconstituting the product, gently pipet and wash down the sides of the vial to ensure full recovery of the protein into solution. It is recommended to reconstitute the lyophilized product with sterile water at 0.1 mg/ml, which can be further diluted into other aqueous solutions.|
|Stability and Storage||
12 months from date of receipt when stored at -20°C to -80°C as supplied. 1 month when stored at 4°C after reconstituting as directed. 3 months when stored at -20°C to -80°C after reconstituting as directed.