Editing Intron (section)

=== tRNA introns ===
Transfer RNA introns that depend upon proteins for removal occur at a specific location within the anticodon loop of unspliced tRNA precursors, and are removed by a tRNA splicing endonuclease. The exons are then linked together by a second protein, the tRNA splicing ligase.<ref>{{cite journal | vauthors = Greer CL, Peebles CL, Gegenheimer P, Abelson J | title = Mechanism of action of a yeast RNA ligase in tRNA splicing | journal = Cell | volume = 32 | issue = 2 | pages = 537–546 | date = February 1983 | pmid = 6297798 | doi = 10.1016/0092-8674(83)90473-7 | s2cid = 44978152 }}</ref> Note that self-splicing introns are also sometimes found within tRNA genes.<ref>{{cite journal | vauthors = Reinhold-Hurek B, Shub DA | title = Self-splicing introns in tRNA genes of widely divergent bacteria | journal = Nature | volume = 357 | issue = 6374 | pages = 173–176 | date = May 1992 | pmid = 1579169 | doi = 10.1038/357173a0 | s2cid = 4370160 | bibcode = 1992Natur.357..173R }}</ref>