Description: Myostatin, also known as GDF-8, is a conserved member of the TGF-beta superfamily. Myostatin is an essential regulator of skeletal muscle mass and cardiac muscle development and function. Myostatin is a secreted protein that negatively regulates skeletal muscle growth by determining muscle fiber number and size. Myostatin binds one of the two activin type II receptors (ACTRIIA or ACTRIIB) to activate SMAD signaling. Myostatin also activates MAPK signaling through TAK1-MKK6 and Ras pathways. Inhibition of myostatin increases muscle mass in a number of human disease animal models, such as muscular dystrophy.
Source: Genetically modified E.coli.
Predicted MW: Dimer, 12.4/24.8 kDa (109/218 aa)
AA Sequence: DFGLDCDEHS TESRCCRYPL TVDFEAFGWD WIIAPKRYKA NYCSGECEFV FLQKYPHTHL VHQANPRGSA GPCCTPTKMS PINMLYFNGK EQIIYGKIPA MVVDRCGCS
Formulation: Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 0.1% Trifluoroacetic Acid (TFA)
*Lot-specific values for the following specifications are supplied with each product on its corresponding COA. The values provided here are minimum expected values to pass internal requirements.
|Specification||Method of Determination||Acceptance Criteria|
|Purity||Reducing and Non-Reducing SDS PAGE||≥95%|
|Endotoxin||Kinetic LAL||≤1 EUs/µg|
|Biological Activity||MPC-11 cell cytotoxicity||≤50 ng/ml; ≥ 2.0 x 10^4 units/mg|
Preparation and Storage
Country of Origin: USA Shipping: Room temperature
Storage Prior to Reconstitution: -20°C
Product Reconstitution: Sterile 20 mM HCl at 0.1 mg/mL
Instructions: Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution, store at -80°C and avoid repeat freeze thaws.
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.
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