Results 41 to 50 of about 61,070 (218)

The Comparative RNA Web (CRW) Site: an online database of comparative sequence and structure information for ribosomal, intron, and other RNAs

open access: yesBMC Bioinformatics, 2002
Background Comparative analysis of RNA sequences is the basis for the detailed and accurate predictions of RNA structure and the determination of phylogenetic relationships for organisms that span the entire phylogenetic tree.
Müller Kirsten M   +13 more
doaj   +1 more source

RNA-Seq analysis of splicing in Plasmodium falciparum uncovers new splice junctions, alternative splicing and splicing of antisense transcripts. [PDF]

open access: yes, 2011
Over 50% of genes in Plasmodium falciparum, the deadliest human malaria parasite, contain predicted introns, yet experimental characterization of splicing in this organism remains incomplete.
DeRisi, Joseph L   +2 more
core   +3 more sources

Drosophila CG3303 is an essential endoribonuclease linked to TDP-43-mediated neurodegeneration [PDF]

open access: yes, 2017
Endoribonucleases participate in almost every step of eukaryotic RNA metabolism, acting either as degradative or biosynthetic enzymes. We previously identified the founding member of the Eukaryotic EndoU ribonuclease family, whose components display ...
BOZZONI, Irene   +11 more
core   +1 more source

Visualizing group II intron dynamics between the first and second steps of splicing

open access: yesNature Communications, 2020
Group II introns are ubiquitous self-splicing ribozymes and retrotransposable elements evolutionarily and chemically related to the eukaryotic spliceosome, with potential applications as gene-editing tools.
Jacopo Manigrasso   +7 more
semanticscholar   +1 more source

Group II Intron Protein Localization and Insertion Sites Are Affected by Polyphosphate [PDF]

open access: yes, 2008
Mobile group II introns consist of a catalytic intron RNA and an intron-encoded protein with reverse transcriptase activity, which act together in a ribonucleoprotein particle to promote DNA integration during intron mobility.
Lambowitz, Alan M.   +5 more
core   +5 more sources

evolution, structure and function of metazoan splicing factor PRPF39 [PDF]

open access: yes, 2019
In the yeast U1 snRNP the Prp39/Prp42 heterodimer is essential for early steps of spliceosome assembly. In metazoans no Prp42 ortholog exists, raising the question how the heterodimer is functionally substituted.
Bortoli, Francesca De   +7 more
core   +1 more source

Discovery of new group I-D introns leads to creation of subtypes and link to an adaptive response of the mitochondrial genome in fungi

open access: yesRNA Biology, 2020
Group I catalytic introns are widespread in bacterial, archaeal, viral, organellar, and some eukaryotic genomes, where they are reported to provide regulatory functions.
B. Cinget, R. Bélanger
semanticscholar   +1 more source

Phylogeny of conserved adenines in linkers of Group-I introns [PDF]

open access: yes, 2009
We have analyzed the linkers in group-I introns, a characteristic region that is crucial to the folding and splicing process of the folded RNA, in seventy sequences spreading across r-RNA, t-RNA and organelle genes from various organisms including algae,
Chandrasekhar Kesavan, Natarajan Ganesan
core   +1 more source

Ubiquitin carboxyl-terminal hydrolases are required for period maintenance of the circadian clock at high temperature in Arabidopsis [PDF]

open access: yes, 2019
Protein ubiquitylation participates in a number of essential cellular processes including signal transduction and transcription, often by initiating the degradation of specific substrates through the 26S proteasome. Within the ubiquitin-proteasome system,
Coupland, George   +6 more
core   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

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