Abstract：
:Gap junctions are present in most tissues and play essential roles in various biological processes. However, we know surprisingly little about the molecular mechanisms underlying gap junction formation. Here, we uncover the essential role of a conserved EGF- and laminin-G-domain-containing protein nlr-1/CASPR in the regulation of gap junction formation in multiple tissues across different developmental stages in C. elegans. NLR-1 is located in the gap junction perinexus, a region adjacent to but not overlapping with gap junctions, and forms puncta before the clusters of gap junction channels appear on the membrane. We show that NLR-1 can directly bind to actin to recruit F-actin networks at the gap junction formation plaque, and the formation of F-actin patches plays a critical role in the assembly of gap junction channels. Our findings demonstrate that nlr-1/CASPR acts as an early stage signal for gap junction formation through anchoring of F-actin networks.
journal_name
Dev Celljournal_title
Developmental cellauthors
Meng L,Yan Ddoi
10.1016/j.devcel.2020.10.020subject
Has Abstractpub_date
2020-12-07 00:00:00pages
574-587.e3issue
5eissn
1534-5807issn
1878-1551pii
S1534-5807(20)30840-6journal_volume
55pub_type
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