7,625 results found
    1. Chromosomes and Gene Expression

    Temporal dynamics and developmental memory of 3D chromatin architecture at Hox gene loci

    Daan Noordermeer et al.
    Hox genes are activated sequentially and, at the same time, undergo a transition from an inactive to an active chromatin compartment, most likely to prevent posterior genes being activated too early.
    1. Developmental Biology
    2. Evolutionary Biology

    Molecular insights into the origin of the Hox-TALE patterning system

    Bruno Hudry et al.
    Interactions between Hox and TALE genes, which generate bilaterally symmetrical body plans, originated in early multicellular animals.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Chromatin-prebound Crm1 recruits Nup98-HoxA9 fusion to induce aberrant expression of Hox cluster genes

    Masahiro Oka et al.
    Nup98-HoxA9 is recruited to Hox gene cluster regions together with the chromosomally pre-bound nuclear export factor Crm1, which induces aberrant expression of several Hox genes and affecting the differentiation of embryonic stem cells.
    1. Chromosomes and Gene Expression

    A nuclear role for the DEAD-box protein Dbp5 in tRNA export

    Azra Lari et al.
    Within the nucleus, Dbp5p supports tRNA export providing a parallel mechanism by which this conserved DEAD-box protein functions to support eukaryotic gene expression.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular insights into RNA and DNA helicase evolution from the determinants of specificity for a DEAD-box RNA helicase

    Anna L Mallam et al.
    The core domains of an RNA helicase interact with a wide variety of NTPs and nucleic acids suggesting how related enzymes may have evolved to have diverse functions.
    1. Structural Biology and Molecular Biophysics

    Valid molecular dynamics simulations of human hemoglobin require a surprisingly large box size

    Krystel El Hage et al.
    Simulations of the unliganded human hemoglobin tetramer, which for the first time yield a thermodynamically stable system, cast doubts on the use of standard solvent box sizes for molecular dynamics studies of biological macromolecules.
    1. Developmental Biology

    Hox genes control vertebrate body elongation by collinear Wnt repression

    Nicolas Denans et al.
    The collinear activation of a subset of posterior Hox genes is responsible for establishing a Wnt/T activity gradient that is required to generate the complete body axis, and hence the full set of segments within a vertebrate embryo.
    1. Developmental Biology

    The Hox transcription factor Ubx stabilizes lineage commitment by suppressing cellular plasticity in Drosophila

    Katrin Domsch et al.
    The Hox transcription factor Ultrabithorax (Ubx) represses alternative gene programs during lineage development by lineage-specific Polycomb protein complex retention at Ubx-targeted chromatin sites.
    1. Structural Biology and Molecular Biophysics

    Specific structural elements of the T-box riboswitch drive the two-step binding of the tRNA ligand

    Jiacheng Zhang et al.
    The glycine T-box riboswitch recognizes tRNAgly and senses its aminoacylation state by first interacting with the anticodon region and subsequently probing the 3' end of the ligand using both specific structural elements and conformational dynamics.

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