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Journal of Heredity 2005 96(2):150-154; doi:10.1093/jhered/esi008
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© The American Genetic Association. 2005. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org

Brief Communication

Characterization of Sox9 in European Atlantic Sturgeon (Acipenser sturio)

A. K. Hett, C. Pitra, I. Jenneckens, and A. Ludwig

From the Department of Evolutionary Genetics, Leibniz-Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany; Auf dem Schnee 54, 58313 Herdecke, Germany

Address correspondence to A. Ludwig at the address above, or e-mail: ludwig{at}izw-berlin.de.

The Sox9 gene of Acipenser sturio, one of the most primitive vertebrates, was analyzed. No sex-specific differences were observed. Sturgeon Sox9 consists of three exons and two introns with completely conserved exon-intron boundaries showing high levels of homology to other vertebrate Sox9 sequences, especially in the N-terminus region containing the HMG box. We found strong evidence for negative (purifying) selection. In contrast to previous studies of other fishes, we observed no evidence for gene duplication in sturgeon. Phylogenetic analyses of Sox9 evolution revealed a basal position for sturgeon Sox9.


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