14 results found
    1. Chromosomes and Gene Expression

    Multi-protein bridging factor 1(Mbf1), Rps3 and Asc1 prevent stalled ribosomes from frameshifting

    Jiyu Wang et al.
    An eukaryotic specific system cooperates with the ribosome quality control pathway to maintain the reading frame during translation of slowly translated sequences.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Organisms with alternative genetic codes resolve unassigned codons via mistranslation and ribosomal rescue

    Natalie Jing Ma et al.
    Cells resolve unassigned codons with near-cognate suppression, frameshifting, and ribosomal rescue mechanisms, demonstrating that unassigned codons are permissible in both natural and engineered genetic codes as barriers to horizontal gene transfer.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A systematically-revised ribosome profiling method for bacteria reveals pauses at single-codon resolution

    Fuad Mohammad et al.
    With the removal of confounding artifacts, ribosome profiling can yield insight into the mechanism of protein synthesis in bacteria at high resolution.
    1. Biochemistry and Chemical Biology

    Ribosomes slide on lysine-encoding homopolymeric A stretches

    Kristin S Koutmou et al.
    Ribosomes undergo an unanticipated movement (‘sliding’) while translating homopolymeric A sequences, which provides a biochemical rationale for the observation that iterated AAA codons are under-represented in gene-coding sequences.
    1. Chromosomes and Gene Expression

    Stop codon context influences genome-wide stimulation of termination codon readthrough by aminoglycosides

    Jamie R Wangen, Rachel Green
    Ribosome profiling reveals genome-wide stimulation of stop codon readthrough by aminoglycosides that is influenced sequence context.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Recurrent loss of HMGCS2 shows that ketogenesis is not essential for the evolution of large mammalian brains

    David Jebb, Michael Hiller
    The evolutionary loss of the main enzyme required for ketone body biosynthesis suggests that alternative strategies to provide energy for large brains during fasting evolved repeatedly in mammals.
    1. Stem Cells and Regenerative Medicine

    The H3K4 methyltransferase Setd1b is essential for hematopoietic stem and progenitor cell homeostasis in mice

    Kerstin Schmidt et al.
    The H3K4 methyltransferase Setd1b is intrinsically required for hematopoietic stem and progenitor cell homeostasis and regulates lineage specification in mice.
    1. Chromosomes and Gene Expression

    The β-hairpin of 40S exit channel protein Rps5/uS7 promotes efficient and accurate translation initiation in vivo

    Jyothsna Visweswaraiah et al.
    A structural element of mRNA exit channel protein Rps5 performs a critical role in start codon recognition during translation initiation by stabilizing initiator tRNA binding to the pre-initiation complex.
    1. Cell Biology

    Neurofibromin controls macropinocytosis and phagocytosis in Dictyostelium

    Gareth Bloomfield et al.
    Inactivation of the Dictyostelium orthologue of the tumour suppressor Neurofibromin (NF1) enables amoebae to ingest dissolved nutrients using macropinocytosis more rapidly, and to prey on larger organisms using phagocytosis.
    1. Developmental Biology
    2. Neuroscience

    Evolution and cell-type specificity of human-specific genes preferentially expressed in progenitors of fetal neocortex

    Marta Florio et al.
    Transcriptomic and genomic analysis provides a resource of 50 primate-specific genes preferentially expressed in neural progenitors of fetal human neocortex, 15 of which are specific to humans.

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