Widespread HCD-tRNA derived SINEs in bivalves rely on multiple LINE partners and accumulate in genic regions.

ABSTRACT:

Background

Short interspersed nuclear elements (SINEs) are non-autonomous non-LTR retrotransposons widespread across eukaryotes. They exist both as lineage-specific, fast-evolving elements and as ubiquitous superfamilies characterized by highly conserved domains (HCD). Several of these superfamilies have been described in bivalves, however their overall distribution and impact on host genome evolution are still unknown due to the extreme scarcity of transposon libraries for the clade. In this study, we examined more than 40 bivalve genomes to uncover the distribution of HCD-tRNA-related SINEs, discover novel SINE-LINE partnerships, and understand their possible role in shaping bivalve genome evolution.

Results

We found that bivalve HCD SINEs have an ancient origin, and they

SUBMITTER: Martelossi J 

PROVIDER: S-EPMC11481361 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature