5,029 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    HP1α is a chromatin crosslinker that controls nuclear and mitotic chromosome mechanics

    Amy R Strom, Ronald J Biggs ... Andrew D Stephens
    Micromanipulation experiments demonstrate that HP1α strengthens interphase and mitotic chromosome mechanics and maintains nuclear shape by chromatin crosslinking, separate from histone methylation.
    1. Cell Biology
    2. Developmental Biology

    Differentiation alters stem cell nuclear architecture, mechanics, and mechano-sensitivity

    Su-Jin Heo, Tristan P Driscoll ... Robert L Mauck
    Nuclear reorganization and stiffening accompanies mesenchymal stem cell differentiation, resulting in increased sensitivity to mechanical perturbation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Distinct RanBP1 nuclear export and cargo dissociation mechanisms between fungi and animals

    Yuling Li, Jinhan Zhou ... Qingxiang Sun
    Animal RanBP1 nuclear export and cargo dissociation mechanisms are surprisingly different from yeast, due to mutations of critical residues, leading to greater nuclear transport efficiency and higher energy cost.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The molecular mechanism of nuclear transport revealed by atomic-scale measurements

    Loren E Hough, Kaushik Dutta ... David Cowburn
    NMR spectroscopy has been used to explain a central unresolved issue of nuclear transport, namely how it can be both fast and specific.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A RanGTP-independent mechanism allows ribosomal protein nuclear import for ribosome assembly

    Sabina Schütz, Ute Fischer ... Vikram G Panse
    The Tsr2 carrier protein connects the nuclear import machinery with the ribosome assembly pathway.
    1. Cell Biology

    An ESCRT-LEM protein surveillance system is poised to directly monitor the nuclear envelope and nuclear transport system

    David J Thaller, Matteo Allegretti ... C Patrick Lusk
    ESCRT-driven mechanisms that sense and seal holes in the nuclear membranes directly monitor the nuclear transport system and the exposure of the inner nuclear membrane.
    1. Cancer Biology

    AR-V7 exhibits non-canonical mechanisms of nuclear import and chromatin engagement in castrate-resistant prostate cancer

    Seaho Kim, CheukMan C Au ... Paraskevi Giannakakou
    Advanced microscopy techniques reveal unique biological features that distinguish androgen receptor variant 7 (AR-V7) from the canonical AR, including high intranuclear mobility and rapid nuclear import that occurs independently of importin-α/β.
    1. Structural Biology and Molecular Biophysics

    Structure-based nuclear import mechanism of histones H3 and H4 mediated by Kap123

    Sojin An, Jungmin Yoon ... Uhn-soo Cho
    Structural and biochemical studies of Kap123 revealed the mechanisms by which Kap123 recognizes H3- and H4-NLSs through two lysine-binding pockets and by which evolutionarily conserved diacetylation of H4-NLS facilitates Kap123-H3-NLS mediated nuclear translocation.
    1. Cell Biology

    Exportin Crm1 is repurposed as a docking protein to generate microtubule organizing centers at the nuclear pore

    Xun X Bao, Christos Spanos ... Kenneth E Sawin
    Microtubule nucleation from the nuclear envelope in fission yeast involves repurposing of nuclear export proteins for a non-export-related function, docking cytoplasmic proteins at nuclear pore complexes.
    1. Physics of Living Systems

    Quantitative dissection of transcription in development yields evidence for transcription-factor-driven chromatin accessibility

    Elizabeth Eck, Jonathan Liu ... Hernan G Garcia
    Confronting different models of chromatin accessibility with temporally resolved transcription profiles favors a scenario where transcription factors actively, rather than passively, drive chromatin from the inaccessible to the accessible state.

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