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. 1976 Dec 1;159(3):651–659. doi: 10.1042/bj1590651

Purification and properties of bovine pituitary follitropin.

K W Cheng
PMCID: PMC1164165  PMID: 1008823

Abstract

A reproducible procedure was developed for the purification of follitropin from frozen bovine pituitary glands. The method involved precipitation with (NH4)2SO4 and acetone, followed by ion-exchange column chromatography on CM-cellulose and DEAE-cellulose and gel filtration on Sephadex G-100. A specific radioligand-receptor assay for follitropin was used to locate the activity in eluates after column chromatography and gel filtration. The potency of the highly purified bovine follitropin as measured by Steelman-Pohley bioassay was 164 times that of NIH-FSH-S1 standard preparation. They yield of bovine follitropin was 2.9 mg/kg of frozen pituitary glands. Electrophoretically, bovine follitropin was more acidic in nature and migrated further towards the anode than lutropin and thyrotropin. The elution volume of bovine follitropin by gel filtration on Sephadex G-100 was very similar to that of bovine lutropin. The amino acid composition of bovine follitropin was similar to that of sheep and human follitropin, being rich in lysine, aspartic acid, threonine, serine, glutamic acid and half-cystine.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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