Follistatin 344 is a recombinant form of the naturally occurring glycoprotein follistatin, which binds and neutralizes members of the TGF-β superfamily — most notably myostatin (GDF-8) and activin A. By inhibiting myostatin, Follistatin 344 effectively removes the natural 'brake' on muscle growth, making it one of the most powerful tools in muscle biology research. Animal studies have demonstrated dramatic increases in muscle mass following follistatin administration. The '344' designation refers to the amino acid count of this specific splice variant, which is the most commonly used form in research. Due to the complexity of this protein, it requires careful handling and cold-chain logistics. Available in research-grade lyophilized form.
| Molecular Weight | ~38 kDa |
| Purity | ≥95% (SDS-PAGE) |
| Form | Lyophilized powder |
| Storage | -80°C to -20°C |
| Source | Recombinant (E. coli or HEK293) |
Recombinant protein that inhibits myostatin signaling — a key research tool for muscle growth, body composition, and metabolic studies.
We supply Follistatin 344 at ≥95% (SDS-PAGE) purity. Higher purity grades are available for pharmaceutical applications upon request.
Minimum order quantities for wholesale Follistatin 344 depend on the quantity and purity grade required. Contact our sales team for specific pricing and MOQ information.
Follistatin 344 should be stored at -80°C to -20°C in a desiccated environment. Proper cold-chain shipping is maintained for all deliveries.
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