2,155 results found
    1. Chromosomes and Gene Expression
    2. Physics of Living Systems

    Chromosome organization by one-sided and two-sided loop extrusion

    Edward J Banigan et al.
    Seemingly contradictory findings of single-molecule and in vivo experiments on a major mechanism of chromosome organization are reconciled by computationally investigating mechanisms of loop extrusion that are consistent with both.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Compaction and segregation of sister chromatids via active loop extrusion

    Anton Goloborodko et al.
    Loop extrusion can robustly compact, segregate and disentangle mammalian chromosomes, suggesting it is a universal mechanism of genome folding during cell division.
    1. Chromosomes and Gene Expression

    Scc2/Nipbl hops between chromosomal cohesin rings after loading

    James Rhodes et al.
    The cohesin loading factor Scc2/Nipbl interacts frequently with cohesin after the loading reaction in a manner consistent with a role in stimulating loop extrusion.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Cohesin and condensin extrude DNA loops in a cell cycle-dependent manner

    Stefan Golfier et al.
    Reconstitution of DNA loop extrusion in cellular contexts using Xenopus egg extracts shows that condensin extrudes DNA loops non-symmetrically in metaphase, whereas cohesin extrudes DNA loops symmetrically in interphase.
    1. Developmental Biology

    A complex regulatory landscape involved in the development of mammalian external genitals

    Ana Rita Amândio et al.
    In vertebrates, large regulatory landscapes sometimes behave as coherent regulatory units, which may explain the lack of effect sometimes observed when single enhancer sequences are deleted in isolation.
    1. Chromosomes and Gene Expression

    Scc2 counteracts a Wapl-independent mechanism that releases cohesin from chromosomes during G1

    Madhusudhan Srinivasan et al.
    In G1 cells, Scc2 loads and maintains cohesin on chromosomes by counteracting a Wapl-independent releasing activity, which is neutralized in S phase by CDK1.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Large domains of heterochromatin direct the formation of short mitotic chromosome loops

    Maximilian H Fitz-James et al.
    Large regions of foreign DNA inserted into mammalian chromosomes assemble into H3K9me3-heterochromatin and result in increased condensin loading with organisation into shorter mitotic chromosome loops than endogenous DNA.
    1. Chromosomes and Gene Expression

    The CDK Pef1 and protein phosphatase 4 oppose each other for regulating cohesin binding to fission yeast chromosomes

    Adrien Birot et al.
    Cohesin loader activity is regulated by phosphorylation of its cohesin substrate.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Determining cellular CTCF and cohesin abundances to constrain 3D genome models

    Claudia Cattoglio et al.
    Absolute quantification of CTCF and cohesin reveals quantitative constraints on 3D genome organization and illuminates the molecular architecture of the cohesin complex.

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