Introns interrupt the continuity of many eukaryal genes, and therefore their removal by splicing is a crucial step in gene expression. Interestingly, even within Eukarya there are at least four splicing mechanisms.
Abelson, John +2 more
core +4 more sources
Asymmetry of nucleotide substitutions in tRNAs indicates common descent of modern organisms from a thermophilic ancestor [PDF]
The nature of the last universal common ancestor (LUCA) of all living organisms remains a controversial issue in biology. There is evidence of both thermophilic and mesophilic LUCA origin.
I. I. Titov
doaj +2 more sources
Methylated nucleosides in tRNA and tRNA methyltransferases [PDF]
To date, more than 90 modified nucleosides have been found in tRNA and the biosynthetic pathways of the majority of tRNA modifications include a methylation step(s).
Hiroyuki eHori
doaj +3 more sources
Disrupted tRNA Genes and tRNA Fragments: A Perspective on tRNA Gene Evolution [PDF]
Transfer RNAs (tRNAs) are small non-coding RNAs with lengths of approximately 70–100 nt. They are directly involved in protein synthesis by carrying amino acids to the ribosome.
Akio Kanai
doaj +3 more sources
Extracellular tRNAs and tRNA-derived fragments [PDF]
Fragmentation of tRNAs generates a family of small RNAs collectively known as tRNA-derived fragments. These fragments vary in sequence and size but have been shown to regulate many processes involved in cell homoeostasis and adaptations to stress. Additionally, the field of extracellular RNAs (exRNAs) is rapidly growing because exRNAs are a promising ...
Juan Pablo Tosar, Alfonso Cayota
openaire +2 more sources
Novel layers of RNA polymerase III control affecting tRNA gene transcription in eukaryotes [PDF]
RNA polymerase III (Pol III) transcribes a limited set of short genes in eukaryotes producing abundant small RNAs, mostly tRNA. The originally defined yeast Pol III transcriptome appears to be expanding owing to the application of new methods.
Ewa Leśniewska, Magdalena Boguta
doaj +1 more source
Mechanisms of ribosome recycling in bacteria and mitochondria: a structural perspective
In all living cells, the ribosome translates the genetic information carried by messenger RNAs (mRNAs) into proteins. The process of ribosome recycling, a key step during protein synthesis that ensures ribosomal subunits remain available for new rounds ...
Savannah M. Seely, Matthieu G. Gagnon
doaj +1 more source
Two recently published papers (Takano et al., 2005 and Shaheen and Hopper, 2005) demonstrate that in S. cerevisiae, cytoplasmic tRNAs can be transported into the nucleus. This retrograde movement may expose mature tRNAs to nuclear proofreading or it may regulate tRNA availability in response to amino acid availability.
Dahlberg, James, Lund, Elsebet
openaire +2 more sources
Breaking the genetic code – a new revolutionary stage in the development of molecular biology: 1968 Nobel Prize laureates M. W. Nirenberg, H. G. Khorana, R. W. Holley [PDF]
This review presents the life stories of M. Nirenberg, H. Khorana, and R. Holley, winners of the 1968 Nobel Prize in Physiology or Medicine, the history of the discoveries made by these scientists, and the methodological approaches used in their works ...
O. P. Matyshevska +2 more
doaj +1 more source
Small regulatory RNAs: from bench to bedside – a keystone symposia meeting report
The Keystone Symposium ‘Small Regulatory RNAs: From Bench to Bedside’ was held in Santa Fe, New Mexico from May 1–4, 2022. The symposium was organized by Frank J. Slack, Jörg Vogel, Ivan Martinez and Karyn Schmidt, and brought together scientists working
Soo Mi Lee +3 more
doaj +1 more source

