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Glycobiology Advance Access published online on March 24, 2004
Glycobiology, doi:10.1093/glycob/cwh066
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Submitted on November 24, 2003
Revised on January 20, 2004
Accepted on February 23, 2004

© 2004 Glycobiology © Oxford University Press 2004; all rights reserved.

ORIGINAL ARTICLES

Bioinformatic identification of polymerizing and transmembrane mucins in the puffer fish Fugu rubripes

Tiange Lang 1, Marina Alexandersson 2, Gunnar C. Hansson 1*, and Tore Samuelsson 1

1 Department of Medical Biochemistry, Göteborg University, Gothenburg, Sweden
2 FCC, Fraunhofer-Chalmers Research Centre for Industrial Mathematics, Chalmers Science Park, Gothenburg, Sweden

* To whom correspondence should be addressed. E-mail: gunnar.hansson{at}medkem.gu.se.

Abstract

Mucins are large glycoproteins characterized by mucin domains that show little sequence conservation and that are rich in the amino acids Ser, Thr and Pro. To effectively predict mucins from genomic and protein sequences obtained from genome projects, we have developed a strategy based on the amino acid compositional bias characteristic of the mucin domains. This strategy is combined with an analysis of other features commonly found in mucins. Our method has now been used to predict mucins in the puffer fish Fugu rubripes that were previously not identified or annotated. At least three gel-forming mucins were found with the same general domain structure as the human MUC2 mucin. In addition one transmembrane mucin was identified with SEA and EGF domains as found in the mammalian transmembrane mucins. These results suggest that the number of gel-forming mucins has been conserved during evolution of the vertebrates, whereas the family of transmembrane mucins has been markedly expanded in the higher vertebrates.


mucin, bioinformatics, glycosylation, SEA, EGF
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 Proc. Natl. Acad. Sci. USAHome page
T. Lang, G. C. Hansson, and T. Samuelsson
Gel-forming mucins appeared early in metazoan evolution
PNAS, October 9, 2007; 104(41): 16209 - 16214.
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