1,066 results found
    1. Cell Biology
    2. Neuroscience

    Free circular introns with an unusual branchpoint in neuronal projections

    Harleen Saini et al.
    A systematic study of RNA localization unexpectedly finds a set of free circular introns with a non-canonical C branchpoint enriched in neuronal projections.
    1. Chromosomes and Gene Expression

    Identification of protein-protected mRNA fragments and structured excised intron RNAs in human plasma by TGIRT-seq peak calling

    Jun Yao et al.
    Human plasma contains protein-protected mRNA fragments, myriad repeat RNAs, and novel intron RNAs, including a family of structured full-length excised introns, some corresponding to mirtron pre-miRNAs and agotrons.
    1. Chromosomes and Gene Expression

    The RNA-binding protein SFPQ preserves long-intron splicing and regulates circRNA biogenesis in mammals

    Lotte Victoria Winther Stagsted et al.
    Transcriptome and eCLIP analyses in mouse and human reveal splicing factor proline/glutamine rich (SFPQ) as a conserved and critical guardian of long-intron integrity, splicing, and circular RNA (circRNA) production.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Synergistic assembly of human pre-spliceosomes across introns and exons

    Joerg E Braun et al.
    Viewing the dynamic interactions of individual spliceosomal subcomplexes with single pre-messenger RNA molecules reveals how nearby flanking splice sites accelerate pre-spliceosome assembly and the splicing of multi-intron pre-mRNAs.
    1. Biochemistry and Chemical Biology

    Group II intron inhibits conjugative relaxase expression in bacteria by mRNA targeting

    Guosheng Qu et al.
    Group II introns can target mRNA, causing inhibition of gene expression, as a potential driver for evolution to the spliceosome.
    1. Immunology and Inflammation

    B cells suppress medullary granulopoiesis by an extracellular glycosylation-dependent mechanism

    Eric E Irons et al.
    B cells regulate production of neutrophils by a novel mechanism by releasing ST6Gal-1, an active sialyltransferase, that suppresses granulopoiesis.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Defining the location of promoter-associated R-loops at near-nucleotide resolution using bisDRIP-seq

    Jason G Dumelie, Samie R Jaffrey
    Genome-wide profiling of R-loops at near single-nucleotide resolution reveals distinct R-loop boundaries depending on the presence and location of the first exon-intron junction.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Minor introns are embedded molecular switches regulated by highly unstable U6atac snRNA

    Ihab Younis et al.
    Hundreds of cell growth and stress response genes are controlled by a rare small RNA component of an ancient splicing machinery, providing a raison d'être for its previously unexplained evolutionary conservation.
    1. Chromosomes and Gene Expression

    Circular RNA biogenesis can proceed through an exon-containing lariat precursor

    Steven P Barrett et al.
    Systematic splice site mutagenesis and the identification of splicing intermediates provides evidence that the dominant mechanism for the generation of circular RNA in fission yeast proceeds through an exon-containing lariat precursor.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Genome streamlining in a minute herbivore that manipulates its host plant

    Robert Greenhalgh et al.
    The genome of a tiny tomato pest reveals mechanisms that underlie metazoan genome reduction.

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