31 окт. 2018 г. · (b) Introns cannot be possible in the receptor (otherwise, it should had a PS), and if they did not exist, a PS machinery very probably should ...

10 сент. 2009 г. · Over time, introns were lost from prokaryotes as a way to make proteins more efficiently. This matters in the hurly burly world of bacteria ...

7 апр. 2012 г. · Prokaryotes can't have introns, because they have transcription coupled to translation. They don't have time/space for that, since intron splicing will stop ...

The absence of introns in the genes of prokaryotes does not tell us anything about the evolutionary age of these structures.

Prokaryotes do seem to have very small sequences of introns, located in their tRNA regions. These introns self-splice out of the sequence.

20 февр. 2019 г. · In prokaryotes they're a minor annoyance for the host genome, which manages to get rid of some of them once in a while. Eukaryotic introns are ...

The absence of introns in prokaryotes which is, certainly, a potentially embarrassing complication, if not the mortal blow to introns-early, has been explained ...

They don't have introns (except for archaebacteria) so splicing is not necessary. In addition, prokaryotes don't have a nucleus so the mRNA doesn't need to be ...

14 февр. 2020 г. · The key point, though, is that WITHIN a gene in a prokaryote, there are no noncoding sequences (ie, introns). All of the noncoding sequences ...