1,469 results found
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    CTCF and cohesin regulate chromatin loop stability with distinct dynamics

    Anders S Hansen et al.
    Single-molecule imaging of CTCF and cohesin in live cells suggests that chromatin loops are dynamic structures that frequently form and fall apart.
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    A Brownian ratchet model for DNA loop extrusion by the cohesin complex

    Torahiko L Higashi et al.
    A structure-based model of the chromosomal cohesin complex, accompanied by molecular-mechanistic simulations, explains cohesin's key role in topologically entrapping DNA, as well as its ability to alternatively extrude DNA loops.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Absolute quantification of cohesin, CTCF and their regulators in human cells

    Johann Holzmann et al.
    Absolute quantification of cohesin, CTCF, NIPBL, WAPL and sororin in HeLa cells implies that some genomic cohesin and CTCF enrichment sites are unoccupied at any one time.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Cohesin mutations are synthetic lethal with stimulation of WNT signaling

    Chue Vin Chin et al.
    Hypersensitivity of cohesin-deficient cells to Wnt signaling is concomitant with beta catenin stabilization and offers promise that Wnt agonists could be therapeutically effective in cohesin mutant cancers.
    1. Biochemistry and Chemical Biology

    Transport of DNA within cohesin involves clamping on top of engaged heads by Scc2 and entrapment within the ring by Scc3

    James E Collier et al.
    Rigorous biochemical and structural analyses reveal the precise topology of cohesin's association with DNA and suggest a mechanism for how DNA is transported inside the ring.
    1. Chromosomes and Gene Expression

    Cohesin architecture and clustering in vivo

    Siheng Xiang, Douglas Koshland
    Cohesin adopts a flexible butterfly conformation in vivo and forms spatial and temporal regulated ordered clusters to maintain cohesion and condensation.
    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. Chromosomes and Gene Expression

    MCM2–7-dependent cohesin loading during S phase promotes sister-chromatid cohesion

    Ge Zheng et al.
    Systematic analyses of DNA replication machinery components in human cells reveal a requirement of MCM-dependent de novo loading or mobilization of cohesin at replication forks in establishing sister-chromatid cohesion.
    1. Genetics and Genomics

    Cohesin residency determines chromatin loop patterns

    Lorenzo Costantino et al.
    High-resolution mapping of cohesin-dependent chromatin loops in the genome of budding yeast reveals evolutionarily conserved features for loop formation and cohesin residency as a determinant of loop positioning.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Cohesion is established during DNA replication utilising chromosome associated cohesin rings as well as those loaded de novo onto nascent DNAs

    Madhusudhan Srinivasan et al.
    Sister chromatid cohesion is established during replication by two independent pathways operating in parallel, one converts chromosomal cohesin into cohesive structures while the other loads cohesin onto nascent DNAs.

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