

Catalog illustration. Actual packaging and lot details are confirmed on inquiry.
Follistatin-344 1 mg
- Per vial
- 1 mg
- Per box
- 10 vials
- Product code
- FN1/344
Follistatin-344 1 mg is listed at 1 mg per vial, 10 vials per box, under product code FN1/344. Follistatin-344 is the longer precursor isoform of follistatin, a glycoprotein that binds activin and myostatin and blocks their signaling.
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Presentation: 1 mg per vial, 10 vials/box
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| Product code | FN1/344 |
|---|---|
| Supplier presentation | 1 mg per vial, 10 vials/box |
| Intended use | Laboratory research only |
Catalog fields are general product information. Confirm the actual label, current lot specification and available documents before relying on a value for procurement or research planning.
Research Use Only. This product is intended strictly for laboratory research. It is not a drug, supplement or medical product and is not for human or veterinary consumption.
About Follistatin-344
Follistatin is a secreted glycoprotein that binds members of the TGF-β superfamily, most notably activins and myostatin (GDF-8), and prevents them from engaging their receptors. Alternative splicing produces two main precursors, FST-344 and FST-317, which are processed into mature forms of 315 and 288 amino acids.
The 344 designation refers to the longer precursor, whose mature form (FS-315) circulates in blood. Follistatin was first isolated from ovarian follicular fluid as an inhibitor of follicle-stimulating hormone release, which gave it its name.
Research context
Follistatin is used in research on activin and myostatin signaling in muscle, reproductive and metabolic biology. Gene-transfer studies in animal models made FST-344 a well-known tool for exploring what happens when myostatin and activin are blocked together.
What to confirm for Follistatin-344
Check these points with our team before you order:
- Whether the material is recombinant protein, and the expression system stated on the lot documents.
- Protein-specific storage conditions.
- The number of boxes you need and the US delivery destination.
- Which lot documents you require before ordering, such as an identity or purity report.
Follistatin-344: frequently asked questions
What do 344 and 315 mean?
FST-344 is the 344-amino-acid precursor produced by one splice variant. Removing its signal peptide gives the mature 315-amino-acid form found in circulation.
Which Follistatin-344 presentations are listed?
One presentation is listed: 1 mg (FN1/344). Each is packed 10 vials per box, and every presentation has its own specification page and product code.
How do I request a quote for Follistatin-344?
Open the presentation you need and use Ask price to message Kilnmere on WhatsApp, or add several materials to the inquiry cart and send them together on WhatsApp or by email. Pricing, current availability and lot documents are confirmed in that conversation.


