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A novel β‐thymosin from the sea urchin: extending the phylogenetic distribution of β‐thymosins from mammals to echinoderms

A novel β‐thymosin from the sea urchin: extending the phylogenetic distribution of β‐thymosins... The study of the phylogenetic distribution of the β‐thymosin family is important to elucidate its biological function further. A new thymosin, designated as thymosin β14, consisting of 40 amino acid residues and with a molecular weight of 4537 Da as determined by ion spray mass spectrometry, was isolated from the sea urchin. The N‐terminus of this polypeptide is blocked by an acetyl group as found by matrix‐assisted laser desorption mass spectrometric and amino acid analysis. The primary structure was elucidatd by Edman degradation of the HPLC‐purified thymosin β14 fragments produced by digestion with endoproteinase Asp‐N and trypsin. Sequence comparison reveals that thymosin β14 is 73% homologous to thymosin β4, obtained from calf thymus. By isolating and characterising the structure of thymosin β14 from the sea urchin, an invertebrate, substantial knowledge about the phylogenetic distribution and evolution of β‐thymosins is gained. © 1997 European Peptide Society and John Wiley & Sons Ltd. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Peptide Science Wiley

A novel β‐thymosin from the sea urchin: extending the phylogenetic distribution of β‐thymosins from mammals to echinoderms

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References (42)

Publisher
Wiley
Copyright
Copyright © 1997 Wiley Subscription Services
ISSN
1075-2617
eISSN
1099-1387
DOI
10.1002/(SICI)1099-1387(199707)3:4<282::AID-PSC119>3.0.CO;2-A
Publisher site
See Article on Publisher Site

Abstract

The study of the phylogenetic distribution of the β‐thymosin family is important to elucidate its biological function further. A new thymosin, designated as thymosin β14, consisting of 40 amino acid residues and with a molecular weight of 4537 Da as determined by ion spray mass spectrometry, was isolated from the sea urchin. The N‐terminus of this polypeptide is blocked by an acetyl group as found by matrix‐assisted laser desorption mass spectrometric and amino acid analysis. The primary structure was elucidatd by Edman degradation of the HPLC‐purified thymosin β14 fragments produced by digestion with endoproteinase Asp‐N and trypsin. Sequence comparison reveals that thymosin β14 is 73% homologous to thymosin β4, obtained from calf thymus. By isolating and characterising the structure of thymosin β14 from the sea urchin, an invertebrate, substantial knowledge about the phylogenetic distribution and evolution of β‐thymosins is gained. © 1997 European Peptide Society and John Wiley & Sons Ltd.

Journal

Journal of Peptide ScienceWiley

Published: Jan 1, 1997

Keywords: ; ; ; ;

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