TY - JOUR A1 - Hormozdiari, Fereydoun A1 - Alkan, Can A1 - Ventura, Mario A1 - Hajirasouliha, Iman A1 - Malig, Maika A1 - Hach, Faraz A1 - Yorukoglu, Deniz A1 - Dao, Phuong A1 - Bakhshi, Marzieh A1 - Sahinalp, S. Cenk A1 - Eichler, Evan E. T1 - Alu repeat discovery and characterization within human genomes Y1 - 2011/06/01 JF - Genome Research JO - Genome Research SP - 840 EP - 849 DO - 10.1101/gr.115956.110 VL - 21 IS - 6 UR - http://genome.cshlp.org/content/21/6/840.abstract N2 - Human genomes are now being rapidly sequenced, but not all forms of genetic variation are routinely characterized. In this study, we focus on Alu retrotransposition events and seek to characterize differences in the pattern of mobile insertion between individuals based on the analysis of eight human genomes sequenced using next-generation sequencing. Applying a rapid read-pair analysis algorithm, we discover 4342 Alu insertions not found in the human reference genome and show that 98% of a selected subset (63/64) experimentally validate. Of these new insertions, 89% correspond to AluY elements, suggesting that they arose by retrotransposition. Eighty percent of the Alu insertions have not been previously reported and more novel events were detected in Africans when compared with non-African samples (76% vs. 69%). Using these data, we develop an experimental and computational screen to identify ancestry informative Alu retrotransposition events among different human populations. ER -