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  1. ..., among several key activities, catalyze genomic DNA nicking and reverse transcription of the L1 mRNA (Feng et al. 1996; Moran et al. 1996; Kazazian and Moran 2017; Scott and Devine 2017). New L1 insertions typically carry retrotransposition hallmarks, including target site duplications (TSDs) and a long...
  2. ...occurred in a stepwise manner, acquiring foreign promoters from BPTF and DND1 via segmental duplication. This unusual evolutionary trajectory altered the regulation of the LRRC37 family, leading to increased expression in the fetal brain and cerebellum. Footnotes ↵ 5 Corresponding...
  3. ...emerge within species (Ohno 1970). Many of these evolutionary events occur in segmental duplications (SDs), genomic units that are at least 1 kbp in length and whose duplications are ≥90% identical to one another (Bailey and Eichler 2006). Many human-specific genes reside in SDs, which often continue...
  4. ...al. 2016; Wu and Knudson 2018). Some genes that emerge de novo not only provide new functions, but have even become essential to the species in which they emerged. For example, the human-specific de novo gene ESRG is required for the maintenance of pluripotency in human naive stem cells (Wang et al...
  5. ....E. ( 2002 ) Human-specific duplication and mosaic transcripts: The recent paralogous structure of chromosome 22. Am. J. Hum. Genet. 70 : 83 – 100 . ↵ Blot S. , Poirier C. , Dreyfus P.A. ( 1995 ) The mouse mutation muscle deficient (mdf) is characterized by a progressive motoneuron disease. J. Neuropathol...
  6. ...et al. 2009). Instead, we identified and masked 661 (3%) genes that show patchy phylogenetic distribution of orthologs, which often suggest problematic synteny inference (Methods). For example, a well-known human-specific duplicated fusion gene, CHRFAM7A (Costantini et al. 2015), showed reciprocal...
  7. ...A.M. , Viggiano L. , Misceo D. , Horvath J.E. , Archidiacono N. , Schwartz S. , Rocchi M. , Eichler E.E. ( 2002 ) Human-specific duplication and mosaic transcripts: The recent paralogous structure of chromosome 22. Am. J. Hum. Genet. 70 : 83 – 100 . ↵ Bairoch A. , Apweiler R. ( 2000 ) The SWISS...
  8. ...human-specific transcripts, whereas an alternative acceptor site produces a macaque-specific transcript. Another example is interferon induced protein 44 like (IFI44L), which is involved in the immune response to infection and autoimmune disorders (Herberg et al. 2016; Zhao et al. 2016; de Oyarzabal et...
  9. ...classes was comparable to previous analysis, with most SV-SVA elements belonging to the youngest types.To rule out sequencing or assembly errors leading to the observed variation, we selected five human-specific SVAs in which to validate the structural variations by PCR analysis. We confirmed structural...
  10. ...contributed an extra layer of species-specific gene regulation by providing novel transcription factor binding sites. In humans, SINE-VNTR-Alu (SVA) elements are one of three still active TE families; approximately 2800 SVA insertions exist in the human , half of which are human-specific. TEs are often...
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