Results 31 to 40 of about 51,251 (260)
Human spliceosomal snRNA sequence variants generate variant spliceosomes
RNA, 2021 Human pre-mRNA splicing is primarily catalyzed by the major spliceosome, comprising five small nuclear ribonucleoprotein complexes, U1, U2, U4, U5, and U6 snRNPs, each of which contains the corresponding U-rich snRNA. These snRNAs are encoded by large gene families exhibiting significant sequence variation, but it remains unknown if most human snRNA ...
Justin W. Mabin +3 more
openaire +2 more sources
Crystals, 2021 Cryo-electron microscopy has greatly advanced our understanding of how the spliceosome cycles through different conformational states to conduct the chemical reactions that remove introns from pre-mRNA transcripts.
Adelaine Kwun-Wai Leung +5 more
doaj +1 more source
Structural basis for dual roles of Aar2p in U5 snRNP assembly [PDF]
, 2013 Yeast U5 small nuclear ribonucleoprotein particle (snRNP) is assembled via a cytoplasmic precursor that contains the U5-specific Prp8 protein but lacks the U5-specific Brr2 helicase.
Beggs, J.D. +8 more
core +1 more source
Reciprocal intronic and exonic histone modification regions in humans. [PDF]
, 2010 While much attention has been focused on chromatin at promoters and exons, human genes are mostly composed of intronic sequences. Analyzing published surveys of nucleosomes and 41 chromatin marks in humans, we identified histone modifications ...
Guthrie, Christine +3 more
core +5 more sources
SF3b4: A Versatile Player in Eukaryotic Cells
Frontiers in Cell and Developmental Biology, 2020 Spliceosomes are large protein-RNA complexes regulating pre-mRNA processing in eukaryotes. SF3b4 encodes a core subunit of the U2-type spliceosome, loss- or gain-of-function of which often associates with abnormal cell growth, leading to tumorigenesis ...
Feng Xiong, Sha Li, Sha Li
doaj +1 more source
Mutations in the splicing regulator Prp31 lead to retinal degeneration in Drosophila
Biology Open, 2021 Retinitis pigmentosa (RP) is a clinically heterogeneous disease affecting 1.6 million people worldwide. The second-largest group of genes causing autosomal dominant RP in human encodes regulators of the splicing machinery.
Sarita Hebbar +7 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]
, 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
The Role of E6 Spliced Isoforms (E6*) in Human Papillomavirus-Induced Carcinogenesis
Viruses, 2018 Persistent infections with High Risk Human Papillomaviruses (HR-HPVs) are the main cause of cervical cancer development. The E6 and E7 oncoproteins of HR-HPVs are derived from a polycistronic pre-mRNA transcribed from an HPV early promoter.
Leslie Olmedo-Nieva +3 more
doaj +1 more source
Alternative splicing: transcriptional regulatory network in agroforestry
Frontiers in Plant Science, 2023 Alternative splicing (AS) in plants plays a key role in regulating the expression of numerous transcripts from a single gene in a regulatory pathway. Variable concentrations of growth regulatory hormones and external stimuli trigger alternative splicing ...
Syed Sarfaraz Hussain +12 more
doaj +1 more source
Rapidly evolving protointrons in Saccharomyces genomes revealed by a hungry spliceosome. [PDF]
, 2019 Introns are a prevalent feature of eukaryotic genomes, yet their origins and contributions to genome function and evolution remain mysterious. In budding yeast, repression of the highly transcribed intron-containing ribosomal protein genes (RPGs ...
Ares, Manuel +8 more
core +1 more source