ArticleThe Journal of biological chemistry2013
Mammalian and malaria parasite cyclase-associated proteins catalyze nucleotide exchange on G-actin through a conserved mechanism.
Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed, 66 citations in OpenAlex.
- Loss of cyclase-associated protein 2 alters actin cytoskeleton organization and biomechanical properties of the ocular lens.Journal of cell science · 2026Article
- Highly divergent apicomplexan cytoskeletons provide additional models for actin biology.The FEBS journal · 2025Review
- Cyclase associated actin cytoskeleton regulatory protein 2 (CAP2) organizes the actin cytoskeleton to influence the biomechanical properties of the ocular lens.bioRxiv : the preprint server for biology · 2025Article
- Multicomponent depolymerization of actin filament pointed ends by cofilin and cyclase-associated protein depends upon filament age.European journal of cell biology · 2024Article
- Multicomponent depolymerization of actin filament pointed ends by cofilin and cyclase-associated protein depends upon filament age.bioRxiv : the preprint server for biology · 2024Article
- Mechanisms of actin disassembly and turnover.The Journal of cell biology · 2023Review
- Cyclase-associated protein interacts with actin filament barbed ends to promote depolymerization and formin displacement.The Journal of biological chemistry · 2023Article
- Functional interdependence of the actin regulators CAP1 and cofilin1 in control of dendritic spine morphology.Cellular and molecular life sciences : CMLS · 2022Article
- CAP1 binds and activates adenylyl cyclase in mammalian cells.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- CAP2 contributes to tumorigenesis in gastric cancer by targeting transcription factor SOX9.Journal of gastrointestinal oncology · 2021Article
- Relationship of intracellular proteolysis with CAP1 and cofilin1 in non-small-cell lung cancer.Journal of biosciences · 2021Article
- The Ringleaders: Understanding the Apicomplexan Basal Complex Through Comparison to Established Contractile Ring Systems.Frontiers in cellular and infection microbiology · 2021Review
- Dynamic Phosphorylation and Dephosphorylation of Cyclase-Associated Protein 1 by Antagonistic Signaling through Cyclin-Dependent Kinase 5 and cAMP Are Critical for the Protein Functions in Actin Filament Disassembly and Cell Adhesion.Molecular and cellular biology · 2020Article
- Regulation of INF2-mediated actin polymerization through site-specific lysine acetylation of actin itself.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- CAPt'n of Actin Dynamics: Recent Advances in the Molecular, Developmental and Physiological Functions of Cyclase-Associated Protein (CAP).Frontiers in cell and developmental biology · 2020Review
- Mechanism of synergistic actin filament pointed end depolymerization by cyclase-associated protein and cofilin.Nature communications · 2019Article
- Differential requirements for cyclase-associated protein (CAP) in actin-dependent processes ofeLife · 2019Article
- Mechanism of CAP1-mediated apical actin polymerization in pollen tubes.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- The Cytoskeletal Protein Cyclase-Associated Protein 1 (CAP1) in Breast Cancer: Context-Dependent Roles in Both the Invasiveness and Proliferation of Cancer Cells and Underlying Cell Signals.International journal of molecular sciences · 2019Review
- Species-Specific Functions of Twinfilin in Actin Filament Depolymerization.Journal of molecular biology · 2018Article
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Authors and funding
5 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cyclase-associated proteins (CAPs) are among the most highly conserved regulators of actin dynamics, being present in organisms from mammals to apicomplexan parasites. Yeast, plant, and mammalian CAPs are large multidomain proteins, which catalyze nucleotide exchange on actin monomers from ADP to ATP and recycle actin monomers from actin-depolymerizing factor (ADF)/cofilin for new rounds of filament assembly. However, the mechanism by which CAPs promote nucleotide exchange is not known. Furthermore, how apicomplexan CAPs, which lack many domains present in yeast and mammalian CAPs, contribute to actin dynamics is not understood. We show that, like yeast Srv2/CAP, mouse CAP1 interacts with ADF/cofilin and ADP-G-actin through its N-terminal α-helical and C-terminal β-strand domains, respectively. However, in the variation to yeast Srv2/CAP, mouse CAP1 has two adjacent profilin-binding sites, and it interacts with ATP-actin monomers with high affinity through its WH2 domain. Importantly, we revealed that the C-terminal β-sheet domain of mouse CAP1 is essential and sufficient for catalyzing nucleotide exchange on actin monomers, although the adjacent WH2 domain is not required for this function. Supporting these data, we show that the malaria parasite Plasmodium falciparum CAP, which is entirely composed of the β-sheet domain, efficiently promotes nucleotide exchange on actin monomers. Collectively, this study provides evidence that catalyzing nucleotide exchange on actin monomers via the β-sheet domain is the most highly conserved function of CAPs from mammals to apicomplexan parasites. Other functions, including interactions with profilin and ADF/cofilin, evolved in more complex organisms to adjust the specific role of CAPs in actin dynamics.
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