ArticleBiochemistry2007
Calcium regulation of calmodulin binding to and dissociation from the myo1c regulatory domain.
Article in Biochemistry, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
31 citing papers in PubMed, 43 citations in OpenAlex.
- The calmodulin-like proteins, CML13 and CML14 function as myosin light chains for the class XI myosins in Arabidopsis.Plant & cell physiology · 2026Article
- Myosin Class I Genes Follow a Cell Type-Specific Transcription Pattern in Human Haematopoietic Cell Lines.International journal of molecular sciences · 2026Article
- MYO1B in human disease: an actin-based motor linking membrane trafficking to oncogenic signaling, metastasis, and vascular aging.Frontiers in oncology · 2026Review
- Neurogranin-MYH9 interaction regulates cytoskeletal remodeling in cerebral vasculature.Fluids and barriers of the CNS · 2025Article
- Myosin-I synergizes with Arp2/3 complex to enhance the pushing forces of branched actin networks.Science advances · 2024Article
- Functional characterization of calmodulin-like proteins, CML13 and CML14, as novel light chains of Arabidopsis class VIII myosins.Journal of experimental botany · 2024Article
- Myosin-I Synergizes with Arp2/3 Complex to Enhance Pushing Forces of Branched Actin Networks.bioRxiv : the preprint server for biology · 2024Article
- Human disease-associated calmodulin mutations alter calcineurin function through multiple mechanisms.Cell calcium · 2023Article
- Ensembles of human myosin-19 bound to calmodulin and regulatory light chain RLC12B drive multimicron transport.The Journal of biological chemistry · 2023Article
- Putting the brakes on a myosin motor.The Journal of biological chemistry · 2020Article
- The regulatory protein 14-3-3β binds to the IQ motifs of myosin-IC independent of phosphorylation.The Journal of biological chemistry · 2020Article
- Myosin-1c promotes E-cadherin tension and force-dependent recruitment of α-actinin to the epithelial cell junction.Journal of cell science · 2018Article
- Adhesion force and attachment lifetime of the KIF16B-PX domain interaction with lipid membranes.Molecular biology of the cell · 2017Article
- Myosin-I molecular motors at a glance.Journal of cell science · 2016Review
- Various Themes of Myosin Regulation.Journal of molecular biology · 2016Review
- The role of myosin 1c and myosin 1b in surfactant exocytosis.Journal of cell science · 2016Article
- An actin filament population defined by the tropomyosin Tpm3.1 regulates glucose uptake.Traffic (Copenhagen, Denmark) · 2015Article
- Structure of myosin-1c tail bound to calmodulin provides insights into calcium-mediated conformational coupling.Nature structural & molecular biology · 2015Article
- Crystal structure of calcium binding protein-5 from Entamoeba histolytica and its involvement in initiation of phagocytosis of human erythrocytes.PLoS pathogens · 2014Article
- Myosin light chains: Teaching old dogs new tricks.Bioarchitecture · 2014Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
Myo1c is an unconventional myosin involved in cell signaling and membrane dynamics. Calcium binding to the regulatory-domain-associated calmodulin affects myo1c motor properties, but the kinetic details of this regulation are not fully understood. We performed actin gliding assays, ATPase measurements, fluorescence spectroscopy, and stopped-flow kinetics to determine the biochemical parameters that define the calmodulin-regulatory-domain interaction. We found calcium moderately increases the actin-activated ATPase activity and completely inhibits actin gliding. Addition of exogenous calmodulin in the presence of calcium fully restores the actin gliding rate. A fluorescently labeled calmodulin mutant (N111C) binds to recombinant peptides containing the myo1c IQ motifs at a diffusion-limited rate in the presence and absence of calcium. Measurements of calmodulin dissociation from the IQ motifs in the absence of calcium show that the calmodulin bound to the IQ motif adjacent to the motor domain (IQ1) has the slowest dissociation rate (0.0007 s-1), and the IQ motif adjacent to the tail domain (IQ3) has the fastest dissociation rate (0.5 s-1). When the complex is equilibrated with calcium, calmodulin dissociates most rapidly from IQ1 (60 s-1). However, this increased rate of dissociation is limited by a slow calcium-induced conformational change (3 s-1). Fluorescence anisotropy decay of fluorescently labeled N111C bound to myo1c did not depend appreciably on Ca2+. Our data suggest that the calmodulin bound to the IQ motif adjacent to the motor domain is rapidly exchangeable in the presence of calcium and is responsible for regulation of myo1c ATPase and motile activity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.