Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
EMBO J. 1994 Oct 3;13(19):4629-35.

Self-splicing group I intron in cyanobacterial initiator methionine tRNA: evidence for lateral transfer of introns in bacteria.

Author information

  • 1Department of Biological Sciences, University at Albany, SUNY 12222.


A group I self-splicing intron has been found in the anticodon loop of tRNA(fMet) genes in three cyanobacterial genera: Dermocarpa, Scytonema and Synechocystis; it is absent in nine others. The Synechocystis intron is also interrupted by an open reading frame (ORF) of 150 codons. Of these three bacteria, only Scytonema also contains the group I intron that has previously been reported in tRNA(Leu) (UAA) genes in both cyanobacteria and chloroplasts. The presence of an ORF in the tRNA(fMet) intron, the sporadic distribution of the intron among cyanobacteria and the lack of correlation between relatedness of the intron sequences and the bacteria in which they reside, are all consistent with recent introduction of this intron by lateral transfer.

[PubMed - indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Icon for PubMed Central
    Loading ...
    Write to the Help Desk