5,862 results found
    1. Cell Biology

    A new family of StART domain proteins at membrane contact sites has a role in ER-PM sterol transport

    Alberto T Gatta, Louise H Wong ... Tim P Levine
    A new family of sterol-specific lipid transfer proteins has been found that anchors in the endoplasmic reticulum; some of these proteins stretch across membrane contacts and mediate sterol traffic from the plasma membrane.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Interface between 40S exit channel protein uS7/Rps5 and eIF2α modulates start codon recognition in vivo

    Jyothsna Visweswaraiah, Alan G Hinnebusch
    The small subunit ribosomal protein uS7/Rps5 interacts with translation initiation factor eIF2α to stabilize first the open, and then the closed conformation of the pre-initiation complex to promote accurate start codon selection in vivo.
    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, Yvette Pittman ... Alan G Hinnebusch
    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. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Constitutive turnover of histone H2A.Z at yeast promoters requires the preinitiation complex

    Michael Tramantano, Lu Sun ... Ed Luk
    The transcription machinery is required for the disassembly of the promoter-proximal H2A.Z nucleosome, contributing to the constitutive histone turnover at yeast promoters.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Polysome-CAGE of TCL1-driven chronic lymphocytic leukemia revealed multiple N-terminally altered epigenetic regulators and a translation stress signature

    Ariel Ogran, Tal Havkin-Solomon ... Rivka Dikstein
    Examination of the changes in the transcription start site selection in TCL1-driven chronic lymphocytic leukemia and their impact on mRNA translation revealed a marked elevation of intra-genic cryptic promoters, which are predicted to generate multiple N-terminally truncated or modified proteins.
    1. Structural Biology and Molecular Biophysics

    Translational initiation factor eIF5 replaces eIF1 on the 40S ribosomal subunit to promote start-codon recognition

    Jose Luis Llácer, Tanweer Hussain ... V Ramakrishnan
    The N-terminal domain (NTD) of the initiation factor eIF5 bound to the 40S subunit at the precise location vacated by eIF1 promotes tRNAi accommodation at AUG codons.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Movement of accessible plasma membrane cholesterol by the GRAMD1 lipid transfer protein complex

    Tomoki Naito, Bilge Ercan ... Yasunori Saheki
    GRAMD1 proteins sense a transient expansion of the accessible pool of plasma membrane cholesterol and facilitate its transport to the endoplasmic reticulum at ER-PM contact sites.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Quality control of transcription start site selection by nonsense-mediated-mRNA decay

    Christophe Malabat, Frank Feuerbach ... Alain Jacquier
    RNA polymerase II generates numerous transcript isoforms, including transcripts initiating downstream of the START codon, that are efficiently degraded by the nonsense-mediated mRNA decay pathway.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A map of human PRDM9 binding provides evidence for novel behaviors of PRDM9 and other zinc-finger proteins in meiosis

    Nicolas Altemose, Nudrat Noor ... Simon R Myers
    In humans, specific sequence features can predict whether meiotic recombination occurs at sites bound by the protein PRDM9, whose DNA-binding zinc-finger domain can unexpectedly bind to gene promoters and to other copies of PRDM9.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    The mechanism of variability in transcription start site selection

    Libing Yu, Jared T Winkelman ... Richard H Ebright
    Variability in bacterial transcription start site selection involves DNA “scrunching” and “anti-scrunching,” which may represent a general mechanism for start site selection in all organisms.

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