Results 61 to 70 of about 364,363 (199)
Polymorphism of the rps16 gene intron in Malus Mill. and related Rosaceae Juss. species
The intron of the chloroplast rps16 gene encoding ribosomal protein 16S belongs to group II introns, which have the capacity to self-splice. The sequence of this intron may be quite polymorphic and is widely used for molecular-genetic studies of ...
M. A. Filyushin, K. V. Boris
doaj +1 more source
The role of transposable elements in the evolution of non-mammalian vertebrates and invertebrates [PDF]
Background: Transposable elements (TEs) have played an important role in the diversification and enrichment of mammalian transcriptomes through various mechanisms such as exonization and intronization (the birth of new exons/introns from previously intronic/exonic sequences, respectively), and insertion into first and last exons.
arxiv +1 more source
To understand the evolution of Ulva chloroplast genomes at intraspecific and interspecific levels, in this study, three complete chloroplast genomes of Ulva compressa Linnaeus were sequenced and compared with the available Ulva cpDNA data.
Feng Liu+3 more
doaj +1 more source
Pseudo-nitzschia is an important genus of diatoms with many species capable of inducing harmful algae blooms (HABs) in coastal and oceanic waters, some of which produce the toxin domoic acid (DA), a neurotoxin that causes amnesic shellfish poisoning (ASP)
Ziyan He+6 more
doaj +1 more source
Mechanically probing the folding pathway of single RNA molecules [PDF]
We study theoretically the denaturation of single RNA molecules by mechanical stretching, focusing on signatures of the (un)folding pathway in molecular fluctuations. Our model describes the interactions between nucleotides by incorporating the experimentally determined free energy rules for RNA secondary structure, while exterior single stranded ...
arxiv +1 more source
Dispersion of the RmInt1 group II intron in the Sinorhizobium meliloti genome upon acquisition by conjugative transfer [PDF]
RmInt1 is a self-splicing and mobile group II intron initially identified in the bacterium Sinorhizobium meliloti, which encodes a reverse transcriptase–maturase (Intron Encoded Protein, IEP) lacking the C-terminal DNA binding (D) and DNA endonuclease ...
Jiménez-Zurdo, José I.+4 more
core +2 more sources
Exons, introns and DNA thermodynamics [PDF]
The genes of eukaryotes are characterized by protein coding fragments, the exons, interrupted by introns, i.e. stretches of DNA which do not carry any useful information for the protein synthesis. We have analyzed the melting behavior of randomly selected human cDNA sequences obtained from the genomic DNA by removing all introns. A clear correspondence
arxiv +1 more source
The largest reservoir of mitochondrial introns is a relic of an ancestral split gene [PDF]
In eukaryotes, introns are located in nuclear and organelle genes from several kingdoms (ref. 1-4). Large introns (0.1 to 5 kbp) are frequent in mitochondrial genomes of plant and fungi (ref.
Cyril Ferandon+5 more
core +1 more source
Exon sequence requirements for excision in vivo of the bacterial group II intron RmInt1 [PDF]
Background Group II intron splicing proceeds through two sequential transesterification reactions in which the 5' and 3'-exons are joined together and the lariat intron is released.
A de Lencastre+25 more
core +4 more sources
Global Regulators Orchestrate Group II Intron Retromobility [PDF]
Group II introns are hypothesized to share common ancestry with both nuclear spliceosomal introns and retrotransposons, which collectively occupy the majority of genome space in higher eukaryotes. These phylogenetically diverse introns are mobile retroelements that move through an RNA intermediate.
Marlene Belfort+6 more
openaire +3 more sources