ArticleNature communications2025
Mechanism of Arp2/3 complex branch disassembly by human Coro7.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Inorganic phosphate rapidly switches the stability of Arp2/3-induced actin branches.The Journal of cell biology · 2026Article
- Domain-selective folding of the tandem β-propeller protein Coronin 7 (Coro7) by the chaperonin CCT/TRiC.The Journal of biological chemistry · 2026Article
- Coordinated Arp2/3-mediated actin branching and myosin-dependent force generation in membrane-cytoskeleton remodeling.Frontiers in physiology · 2026Review
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Authors and funding
10 authors.
Funding
Abstract
Arp2/3 complex nucleates branched actin networks that drive cell motility and intracellular trafficking. Coronins, a family of seven proteins in humans, inhibit Arp2/3 complex in vitro and reduce branch density in cells. Coro7, a distant member of this family, features two β-propeller domains (β1β2) and C-terminal Central-Acidic (CA) domains and remains poorly studied. Here, cryo-EM and biochemical data show that CA binds subunit Arp3 of free Arp2/3 complex with ~1 µM affinity, inhibiting polymerization like Arpin, while displacing Arp3's autoinhibitory C-terminal tail and promoting the active, short-pitch conformation, like WASP-family nucleation-promoting factors. Full-length Coro7, however, does not inhibit Arp2/3 complex polymerization but effectively induces debranching, whereas the isolated β1β2 or CA domains do not. In cells, Coro7 depletion disrupts ER-Golgi transport, which is rescued by full-length Coro7 but not by truncated variants. These results suggest that Coro7 functions as an Arp2/3 complex branch disassembly factor implicated in actin-dependent ER-Golgi trafficking.
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Registered trials
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