New tRNA-targeting transposons that hijack phage and vesicles

Trends Genet. 2023 Jun;39(6):433-435. doi: 10.1016/j.tig.2023.03.004. Epub 2023 Apr 4.


Genomic islands are hotspots for horizontal gene transfer (HGT) in bacteria, but, for Prochlorococcus, an abundant marine cyanobacterium, how these islands form has puzzled scientists. With the discovery of tycheposons, a new family of transposons, Hackl et al. provide evidence for elegant new mechanisms of gene rearrangement and transfer among Prochlorococcus and bacteria more broadly.

Keywords: bacteria; genomic island; horizontal gene transfer; oceanography; pangenome; transposon.

MeSH terms

  • Bacteriophages* / genetics
  • Cyanobacteria* / genetics
  • Gene Transfer, Horizontal / genetics
  • Genomic Islands
  • RNA, Transfer / genetics


  • RNA, Transfer