Quick answer
What is Follistatin-344?
Built from index records dated 2026-10-09 to 2026-10-13 Compiled by an automated pipeline, checked by The Peptide Observer editorial desk. No qualified clinical reviewer. How this site works
Follistatin-344 is not a peptide, grouped on this site under Growth factors and growth hormone-derived compounds, and the 12 research records kept here are 8 from studies in rats or mice, 1 from a trial in people and 3 that do not state what kind of study it is.
The literature search returned 3,222 records. This site keeps 12 of them, which is 0.37 per cent of what came back.
What it is
Follistatin-344 is indexed here despite not being a peptide, because the same research literature and the same searches cover it. This site puts it in the Growth factors and growth hormone-derived compounds group.
A glycoprotein that binds and antagonises activin, bone morphogenetic proteins and myostatin, per the retrieved records.[1, 2, 3]
Stated in the titles of the cited 1990 Science, 1998 Proceedings of the National Academy of Sciences and 2004 Developmental Biology papers.
What kind of records
No public chemistry record was found under this name, so the entry describes a preparation, a protein or a mixture rather than one defined molecule.
That sentence is produced by counting, not by reading. What was counted: PubChem returned no compound record for this name, so the subject is a preparation, protein or mixture rather than a defined small molecule; identity fields are unsourced.
What this does not settle
- What it does in a body. Counting records is not reading them, and nothing here has been read in full.
- Whether it causes harm. No adverse-effect row was taken from any source for this entry.
- How long it lasts. No pharmacokinetics source was retrieved for this entry.
- What the other 3,210 retrieved records say. They are not in this index.
The longer explanation
Where this comes from
The records cited above, in full.
- Activin-binding protein from rat ovary is follistatin. Science (New York, N.Y.) (1990). pmid:2106159
- Direct binding of follistatin to a complex of bone-morphogenetic protein and its receptor inhibits ventral and epidermal cell fates in early Xenopus embryo. Proceedings of the National Academy of Sciences of the United States of America (1998). pmid:9689081
- Follistatin complexes Myostatin and antagonises Myostatin-mediated inhibition of myogenesis. Developmental biology (2004). pmid:15136138