We offer peptides for sale as Follistatin (Follistatin 315) 1 mg. Follistatin 315, sometimes written FST-315, is the processed form of a secreted protein that regulates signalling in the TGF-beta superfamily. Peptide Sciences supplies this presentation as a 1 mg vial. The number is part of the protein identity, not a strength rating, and that distinction is the main thing to hold onto when comparing follistatin listings.
Follistatin was first identified as a substance that suppresses follicle-stimulating hormone release in ovarian follicular fluid. It works by binding ligands outside the cell, which limits their access to the receptors that would otherwise carry the signal inward. Activin was the first ligand identified; myostatin, or GDF-8, and several bone morphogenetic proteins are also bound.
The human sequence is 344 amino acids including a 29-amino-acid signal peptide. The 315 designation corresponds to the mature protein after that signal sequence is removed in processing. Both numbers describe the same protein at different stages of its description, so neither should be treated as a milligram strength or as evidence of a different practical outcome.
This vial is 1 mg of the 315 form. Its ligand-sequestering mechanism is not androgen receptor stimulation and not growth hormone secretagogue activity, and research interest in myostatin does not guarantee a muscle or strength result from a commercial product.
One more distinction is worth keeping: the 315 form is not a truncated product in the sense of a fragment peptide. It is the mature protein after normal processing, and the literature describes it as the secreted, active form. Follistatin binds BMPs and GDF-11 as well as activin and myostatin, so a study that measures one ligand is not a study of the whole protein. None of that establishes an outcome, only an identity.
Original product and manufacturer verification
When you buy follistatin 315 from IronJuice Shop, you receive an original product supplied directly by its manufacturer.
Frequently Asked Questions
What is the active substance in Follistatin (Follistatin 315) 1 mg?
Follistatin 315, sometimes written FST-315, is the processed form of a secreted protein that regulates signalling in the TGF-beta superfamily.
What mechanism should I understand before I buy follistatin 315?
Follistatin was first identified as a substance that suppresses follicle-stimulating hormone release in ovarian follicular fluid. It works by binding ligands outside the cell, which limits their access to the receptors that would otherwise carry the signal inward.
What structural or composition features are described for peptides for sale?
The stated Follistatin 315 product refers to the mature 315-amino-acid form; the following 344-amino-acid figure includes its precursor signal peptide. The human sequence is 344 amino acids including a 29-amino-acid signal peptide.
Which related-substance distinctions matter for peptides for sale here?
The 315 designation corresponds to the mature protein after that signal sequence is removed in processing. Both numbers describe the same protein at different stages of its description, so neither should be treated as a milligram strength or as evidence of a different practical outcome.
Which names identify the follistatin 315 for sale offered here?
The product is Follistatin (Follistatin 315) 1 mg.
Which product form is offered within your range of follistatin 315 for sale?
A vial presentation.
What amount is supplied with the follistatin 315 for sale offered here?
1 mg in the Peptide Sciences presentation. The 315 refers to the protein form, not the amount.
How can I check authenticity if I buy follistatin 315 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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