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Evolution and human tissue expression of the Cres/Testatin subgroup genes, a reproductive tissue specific subgroup of the type 2 cystatins
KTH, School of Computer Science and Communication (CSC), Computational Biology, CB.
2010 (English)In: Evolution & Development, ISSN 1520-541X, E-ISSN 1525-142X, Vol. 12, no 3, 329-342 p.Article in journal (Refereed) Published
Abstract [en]

P>The cystatin family comprises a group of generally broadly expressed protease inhibitors. The Cres/Testatin subgroup (CTES) genes within the type 2 cystatins differs from the classical type 2 cystatins in having a strikingly reproductive tissue-specific expression, and putative functions in reproduction have therefore been discussed. We have performed evolutionary studies of the CTES genes based on gene searches in genomes from 11 species. Ancestors of the cystatin family can be traced back to plants. We have localized the evolutionary origin of the CTES genes to the split of marsupial and placental mammals. A model for the evolution of these genes illustrates that they constitute a dynamic group of genes, which has undergone several gene expansions and we find indications of a high degree of positive selection, in striking contrast to what is seen for the classical cystatin C. We show with phylogenetic relations that the CTES genes are clustered into three original groups, a testatin, a Cres, and a CstL1 group. We have further characterized the expression patterns of all human members of the subfamily. Of a total of nine identified human genes, four express putative functional transcripts with a predominant expression in the male reproductive system. Our results are compatible with a function of this gene family in reproduction.

Place, publisher, year, edition, pages
2010. Vol. 12, no 3, 329-342 p.
National Category
Developmental Biology
URN: urn:nbn:se:kth:diva-27887DOI: 10.1111/j.1525-142X.2010.00418.xISI: 000277525100011ScopusID: 2-s2.0-77954013603OAI: diva2:384449
Swedish Research Council, 12198
QC 20110110Available from: 2011-01-10 Created: 2011-01-03 Last updated: 2011-01-10Bibliographically approved

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