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Resources » Paper

Kim HJ et al. (2023) Sci Adv "MJL-1 is a nuclear envelope protein required for homologous chromosome pairing and regulation of synapsis during meiosis in C. elegans."

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  • Comments on Kim HJ et al. (2023) Sci Adv "MJL-1 is a nuclear envelope protein required for homologous chromosome pairing and regulation of synapsis during meiosis in C. elegans." (0)

  • Overview

    PMID:
    36753547
    DOI:
    10.1126/sciadv.add1453
    Status:
    Publication type:
    Journal_article
    WormBase ID:
    WBPaper00065003

    Kim HJ, Liu C, Zhang L, & Dernburg AF (2023). MJL-1 is a nuclear envelope protein required for homologous chromosome pairing and regulation of synapsis during meiosis in C. elegans. Sci Adv, 9, eadd1453. doi:10.1126/sciadv.add1453

    Interactions between chromosomes and LINC (linker of nucleoskeleton and cytoskeleton) complexes in the nuclear envelope (NE) promote homolog pairing and synapsis during meiosis. By tethering chromosomes to cytoskeletal motors, these connections lead to processive chromosome movements along the NE. This activity is usually mediated by telomeres, but in the nematode Caenorhabditis elegans, special chromosome regions called "pairing centers" (PCs) have acquired this meiotic function. Here, we identify a previously uncharacterized meiosis-specific NE protein, MJL-1 (MAJIN-Like-1), that is essential for interactions between PCs and LINC complexes in C. elegans. Mutations in MJL-1 eliminate active chromosome movements during meiosis, resulting in nonhomologous synapsis and impaired homolog pairing. Fission yeast and mice also require NE proteins to connect chromosomes to LINC complexes. Extensive similarities in the molecular architecture of meiotic chromosome-NE attachments across eukaryotes suggest a common origin and/or functions of this architecture during meiosis.

    We thank Abby Dernburg for curating this paper through ACKnowledge (Author Curation to Knowledgebase) 👍

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