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Mobile element evolution playing Jigsaw-SINEs in gastropod and bivalve mollusks
Matetovici, I.; Sajgo, S.; Ianc, B.; Ochis, C.; Bulzu, P.; Popescu, O.; Damert, A. (2016). Mobile element evolution playing Jigsaw-SINEs in gastropod and bivalve mollusks. Genome Biology and Evolution 8(1): 253-270. dx.doi.org/10.1093/gbe/evv257
In: Genome Biology and Evolution. Oxford University Press: Oxford. ISSN 1759-6653; e-ISSN 1759-6653
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Mollusca [WoRMS]
    Marien/Kust
Author keywords
    SINE; retrotransposon; Mollusca
Auteurs  Top 
  • Matetovici, I.
  • Sajgo, S.
  • Ianc, B.
  • Ochis, C.
  • Bulzu, P.
  • Popescu, O.
  • Damert, A.
Abstract
    SINEs (Short INterspersed Elements) are widely distributed among eukaryotes. Some SINE families are organized in superfamilies characterized by a shared central domain. These central domains are conserved across species, classes, and even phyla. Here we report the identification of two novel such superfamilies in the genomes of gastropod and bivalve mollusks. The central conserved domain of the first superfamily is present in SINEs in Caenogastropoda and Vetigastropoda as well as in all four subclasses of Bivalvia. We designated the domain MESC (Romanian for MEIc-snail and SCoica-mussel) because it appears to be restricted to snails and mussels. The second superfamily is restricted to Caenogastropoda. Its central conserved domain-Snail-is related to the Nin-DC domain. Furthermore, we provide evidence that a 40-bp subdomain of the SINE V-domain is conserved in SINEs in mollusks and arthropods. It is predicted to form a stable stem-loop structure that is preserved in the context of the overall SINE RNA secondary structure in invertebrates. Our analysis also recovered short retrotransposons with a Long INterspersed Element (LINE)-derived 5' end. These share the body and/or the tail with transfer RNA(tRNA)-derived SINEs within and across species. Finally, we identified CORE SINEs in gastropods and bivalves extending the distribution range of this superfamily.
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