Summary: Sauria SINEs: Novel Short Interspersed Retroposable Elements That Are
Widespread in Reptile Genomes
Christopher C. Austin,2
Faculty of Bioscience and Biotechnology, Department of Biological Sciences, Tokyo Institute of Technology, 4259 Nagatsuta-cho,
Midori-ku, Yokohama 226-8501, Japan
Museum of Natural Science, Louisiana State University, Baton Rouge, LA 70803, USA
Received: 20 August 2005 / Accepted: 16 December 2005 [Reviewing Editor: Dr. Martin Kreitman]
Abstract. SINEs are short interspersed retrotrans-
posable elements that invade new genomic sites.
Their retrotransposition depends on reverse trans-
criptase and endonuclease activities encoded by
partner LINEs (long interspersed elements). Recent
genomic research has demonstrated that retroposons
account for at least 40% of the human genome.
Hitherto, more than 30 families of SINEs have been
characterized in mammalian genomes, comprising