ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2012
Rabconnectin3α promotes stable activity of the H+ pump on synaptic vesicles in hair cells.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.
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Who cites it
55 citing papers in PubMed, 74 citations in OpenAlex.
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- Robust inhibitory glycinergic transmission and the effect of bafilomycin, folimycin and EIPA: lessons from the auditory brainstem.Frontiers in cellular neuroscience · 2025Article
- DMXL2 Is Required for Endocytosis and Recycling of Synaptic Vesicles in Auditory Hair Cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- Presynaptic Proteins and Their Roles in Visual Processing by the Retina.Annual review of vision science · 2024Review
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- Dmxl1 Is an Essential Mammalian Gene that Is Required for V-ATPase Assembly and Function In Vivo.Function (Oxford, England) · 2024Article
- Kif1a and intact microtubules maintain synaptic-vesicle populations at ribbon synapses in zebrafish hair cells.bioRxiv : the preprint server for biology · 2024Article
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- Rabconnectin-3α/DMXL2 Is Locally Enriched at the Synaptic Ribbon of Rod Photoreceptor Synapses.Cells · 2023Article
- Sensory deficit screen identifies nsf mutation that differentially affects SNARE recycling and quality control.Cell reports · 2023Article
- Structural and functional understanding of disease-associated mutations in V-ATPase subunit a1 and other isoforms.Frontiers in molecular neuroscience · 2023Review
- Coordinated conformational changes in the VNature structural & molecular biology · 2022Article
- A novel variant inExperimental biology and medicine (Maywood, N.J.) · 2021Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 1 country.
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Abstract
Acidification of synaptic vesicles relies on the vacuolar-type ATPase (V-ATPase) and provides the electrochemical driving force for neurotransmitter exchange. The regulatory mechanisms that ensure assembly of the V-ATPase holoenzyme on synaptic vesicles are unknown. Rabconnectin3α (Rbc3α) is a potential candidate for regulation of V-ATPase activity because of its association with synaptic vesicles and its requirement for acidification of intracellular compartments. Here, we provide the first evidence for a role of Rbc3α in synaptic vesicle acidification and neurotransmission. In this study, we characterized mutant alleles of rbc3α isolated from a large-scale screen for zebrafish with auditory/vestibular defects. We show that Rbc3α is localized to basal regions of hair cells in which synaptic vesicles are present. To determine whether Rbc3α regulates V-ATPase activity, we examined the acidification of synaptic vesicles and localization of the V-ATPase in hair cells. In contrast to wild-type hair cells, we observed that synaptic vesicles had elevated pH, and a cytosolic subunit of the V-ATPase was no longer enriched in synaptic regions of mutant hair cells. As a consequence of defective acidification of synaptic vesicles, afferent neurons in rbc3α mutants had reduced firing rates and reduced accuracy of phase-locked action potentials in response to mechanical stimulation of hair cells. Collectively, our data suggest that Rbc3α modulates synaptic transmission in hair cells by promoting V-ATPase activity in synaptic vesicles.
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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.