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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1987 Dec;84(23):8282–8286. doi: 10.1073/pnas.84.23.8282

Isolation and partial characterization of follistatin: a single-chain Mr 35,000 monomeric protein that inhibits the release of follicle-stimulating hormone.

N Ueno 1, N Ling 1, S Y Ying 1, F Esch 1, S Shimasaki 1, R Guillemin 1
PMCID: PMC299526  PMID: 3120188

Abstract

A Mr 35,000 protein with follicle-stimulating hormone release-inhibitory activity was isolated from porcine ovarian follicular fluid by heparin-Sepharose affinity chromatography, gel filtration on Sephacryl S-200, and multiple steps of high-performance liquid chromatography. The isolated molecule is highly enriched in cysteines and is composed of a single polypeptide chain. In addition, it has no sequence homology with the previously characterized follicular fluid inhibins, which are heterodimeric proteins of Mr 32,000 with follicle-stimulating hormone release-inhibiting activity. This protein specifically inhibits the basal secretion of follicle-stimulating hormone, but not that of luteinizing hormone, in the rat anterior pituitary monolayer culture system with a half-maximal effective dose of 2.5-6.0 ng/ml. Another form of the molecule of Mr 32,000 present in much lower concentration in follicular fluid was also isolated. It may differ from the Mr 35,000 form in glycosylation or carboxyl-terminal truncation. We suggest that this compound be called "follistatin" to signify its structural difference from inhibin.

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Selected References

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