Follistatin (FS) was initially identified as a follicle-stimulating hormone inhibiting substance found in ovarian follicular fluid. It has since been shown that FS is a high‑affinity activin-binding protein that can act as an activin antagonist. Two alternatively spliced follistatin mRNAs, encoding mature FS with 288 amino acid (aa) residues (FS‑288) and 315 aa residues (FS‑315), exist. Natural FS purified from porcine ovaries is primarily a carboxy-terminal truncated form of FS‑315 composed of 300 aa residues. Cell surface-associated FS has been suggested to play a role in the clearance and bioavailability of activin in vivo. Besides activin, FS has also been shown to bind with multiple BMPs and to inhibit BMP activity in early Xenopus embryos. FS deficient mice have been shown to have multiple embryonic defects that will result in death shortly after birth.

高纯度、高活性、低内毒素、高批间一致性

-25 ~ -15℃保存，收到货之后有效期1年。 复溶后，无菌条件下，2~8℃保存，7天有效期。复溶后， 无菌条件下，-85 ~ -65℃保存，3个月有效期。