Structural study of circulating thymic factor: a peptide isolated from pig serum. I. Isolation and purification.

Abstract

A circulating thymic factor (FTS) has been characterized by a bioassay based on its ability to render theta-negative rosette-forming cells theta-positive and azathioprine-sensitive. FTS was sequentially purified and finally isolated from 1000 liters of pig serum by ultrafiltration, gel filtration, and ion exchange chromatography. Its amino acid composition and apparent molecular weight estimated by Sephadex G-25 chromatography, indicate that FTS is a nonapeptide of composition lysine, aspartic acid (or asparagine), serine 2, glutamic acid (or glutamine) 2, glycine 2, and alanine.

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@article{Dardenne1977StructuralSO, title={Structural study of circulating thymic factor: a peptide isolated from pig serum. I. Isolation and purification.}, author={Mireille Dardenne and J M Pl{\'e}au and Nguyen Khoa Man and J. F. Bach}, journal={The Journal of biological chemistry}, year={1977}, volume={252 22}, pages={8040-4} }