NDLI: A novel satellite DNA isolated in Pecten jacobaeus shows high sequence similarity among molluscs

Content Provider	Springer Nature Link
Author	Petraccioli, Agnese Odierna, Gaeta Capriglione, Teresa Barucca, Marco Forconi, Mariko Olmo, Ettore Biscotti, Maria Assunta
Copyright Year	2015
Abstract	The aim of this work is to investigate the sequence conservation and the evolution of repeated DNA in related species. Satellite DNA is a component of eukaryotic genomes and is made up of tandemly repeated sequences. These sequences are affected by high rates of mutation that lead to the occurrence of species-specific satellite DNAs, which are different in terms of both quantity and quality. In this work, a novel repetitive DNA family, named PjHhaI sat, is described in Pecten jacobaeus. The quantitative analyses revealed a different abundance of this element in the molluscan species investigated in agreement with the “library hypothesis” even if, in this case, at a high taxonomic level. In addition, the qualitative analysis demonstrated an astonishing sequence conservation not only among scallops but also in six other molluscan species belonging to three classes. These findings suggest that the PjHhaI sat may be considered as the most ancients of DNA described so far, which remained “frozen” during molluscan evolution. The widespread distribution of this sat DNA in molluscs as well as its long evolutionary preservation open up questions on the functional role of this element. A future challenge might be the identification of proteins or molecules which interact with the PjHhaI sat.
Starting Page	1717
Ending Page	1725
Page Count	9
File Format	PDF
ISSN	16174615
Journal	Molecular and General Genetics MGG
Volume Number	290
Issue Number	5
e-ISSN	16174623
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-04-02
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Satellite DNA Pecten jacobaeus Pectinidae Mollusca Cell Biology Biochemistry Microbial Genetics and Genomics Plant Genetics & Genomics Animal Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine Molecular Biology

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