3,503 results found
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Role of the pre-initiation complex in Mediator recruitment and dynamics

    Elisabeth R Knoll et al.
    Genome-wide recruitment of Mediator and Pol II is reduced in yeast lacking the Med2-Med3-Med15 tail module triad, and Mediator association with gene promoters depends on Pol II, Taf1, and TBP.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    TAF4, a subunit of transcription factor II D, directs promoter occupancy of nuclear receptor HNF4A during post-natal hepatocyte differentiation

    Daniil Alpern et al.
    Physical and functional interactions between HNF4A and TAF4 coordinate HNF4A genomic occupancy with pre-initiation complex formation to activate post-natal hepatocyte gene expression.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Yeast Ded1 promotes 48S translation pre-initiation complex assembly in an mRNA-specific and eIF4F-dependent manner

    Neha Gupta et al.
    Yeast RNA helicase Ded1 stimulates ribosome recruitment of structure-laden native mRNAs in a reconstituted system by interactions between domains in Ded1 and initiation factor eIF4G that stabilizes a Ded1-eIF4F complex.
    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. Structural Biology and Molecular Biophysics

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

    Jose Luis Llácer et al.
    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. Chromosomes and Gene Expression

    The human origin recognition complex is essential for pre-RC assembly, mitosis, and maintenance of nuclear structure

    Hsiang-Chen Chou et al.
    The initiation of human genome replication requires the six-subunit origin recognition complex (ORC) and CDC6, with ORC playing additional roles during mitosis and in organization of the cell nucleus.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    The primary σ factor in Escherichia coli can access the transcription elongation complex from solution in vivo

    Seth R Goldman et al.
    The sigma subunit of bacterial RNA polymerase, classically known as an initiation factor, can also operate as an elongation factor with effects that vary with growth phase.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Chemical perturbation of an intrinsically disordered region of TFIID distinguishes two modes of transcription initiation

    Zhengjian Zhang et al.
    An inorganic tin oxochloride cluster specifically binds to an intrinsically disordered, histidine-rich, low complexity protein region and arrests de novo transcription initiation without affecting reinitiation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Yeast eIF4A enhances recruitment of mRNAs regardless of their structural complexity

    Paul Yourik et al.
    Eukaryotic translation initiation factor 4A is stimulated by the ribosomal pre-initiation complex and promotes the recruitment of mRNAs regardless of their degree of structure.
    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 et al.
    The transcription machinery is required for the disassembly of the promoter-proximal H2A.Z nucleosome, contributing to the constitutive histone turnover at yeast promoters.

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