We offer peptides for sale as Follistatin (Follistatin 344) 1 mg. Follistatin 344, or FST-344, is the full-length numbering of a secreted glycoprotein that binds members of the TGF-beta family and keeps them away from their receptors. Peptide Sciences supplies it here as a 1 mg vial. The 344 label marks the precursor sequence, which is why it appears next to 315 listings for the same protein.
The human cDNA encodes a protein of 344 amino acids with a 29-residue signal sequence, and the recombinant protein is described at roughly 37.8 kDa. Follistatin contains three follistatin domains and binds activin, myostatin, GDF-11 and several BMPs. That breadth is the point: it is a ligand trap with more than one target, so its biology cannot be reduced to a single muscle-related effect.
Binding a ligand in the extracellular space is not the same as activating a receptor, and it is not androgen receptor stimulation. Follistatin is neither testosterone nor growth hormone, and it is not a growth hormone releasing peptide. Its relevance to growth research comes from the signalling networks it modulates, not from hormone replacement.
This listing is the 1 mg presentation of the 344 form. If you are comparing it with the 315 entry, the difference is which stage of the protein the numbering describes, not the amount in the vial. Both are 1 mg, and both are studied for ligand sequestration.
One practical note: a 344 listing and a 315 listing at the same 1 mg contain the same quantity, so the choice should rest on which protein form your comparison specifies, not on the number looking larger. The larger number is a longer precursor, not more material in the vial.
Original product and manufacturer verification
When you buy follistatin 344 from IronJuice Shop, you receive an original product supplied directly by its manufacturer.
Frequently Asked Questions
What is the active substance in Follistatin (Follistatin 344)?
Follistatin 344, or FST-344, is the full-length numbering of a secreted glycoprotein that binds members of the TGF-beta family and keeps them away from their receptors.
What mechanism should I understand before I buy follistatin 344?
Binding a ligand in the extracellular space is not the same as activating a receptor, and it is not androgen receptor stimulation.
What structural or composition features are described for peptides for sale?
The human cDNA encodes a protein of 344 amino acids with a 29-residue signal sequence, and the recombinant protein is described at roughly 37.8 kDa.
What chemical identity is described for the peptides for sale offered here?
Follistatin 344 is described as FST-344, a protein that binds members of the TGF-beta family. It is not a growth hormone secretagogue.
Which names identify the follistatin 344 for sale offered here?
The product is Follistatin (Follistatin 344) 1 mg.
Which product form is offered within your range of follistatin 344 for sale?
A vial presentation.
What amount is supplied with the follistatin 344 for sale offered here?
1 mg in the Peptide Sciences presentation. The 344 is a protein numbering, not a quantity.
How can I check authenticity if I buy follistatin 344 online?
Check the product's authenticity code on the manufacturer's official website after receipt. Keep the code with the batch and expiry details. The peptides for sale here are supplied directly by their manufacturers.
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