ArticleThe Journal of biological chemistry2015
Role of the outer pore domain in transient receptor potential vanilloid 1 dynamic permeability to large cations.
Article in The Journal of biological chemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 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
29 citing papers in PubMed.
- Dilation of ion selectivity filters in cation channels.Trends in biochemical sciences · 2024Review
- Blockade of TRPV channels by intracellular spermine.The Journal of general physiology · 2023Article
- Genetically-encoded BRET probes shed light on ligand bias-induced variable ion selectivity in TRPV1 and P2X5/7.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Article
- Ratio of Hydrophobic-Hydrophilic and Positive-Negative Residues at Lipid-Water-Interface Influences Surface Expression and Channel Gating of TRPV1.The Journal of membrane biology · 2022Article
- Involvement of P2X7 receptors in chronic pain disorders.Purinergic signalling · 2022Review
- Nonselective TRPC channel inhibition and suppression of aminoglycoside-induced premature termination codon readthrough by the small molecule AC1903.The Journal of biological chemistry · 2022Article
- Article
- Review
- Structural insights into the gating mechanisms of TRPV channels.Cell calcium · 2020Review
- Article
- TRP ion channels: Proteins with conformational flexibility.Channels (Austin, Tex.) · 2019Review
- Article
- Structures of TRPV2 in distinct conformations provide insight into role of the pore turret.Nature structural & molecular biology · 2019Article
- Conformational plasticity in the selectivity filter of the TRPV2 ion channel.Nature structural & molecular biology · 2018Article
- RNA expression profiling in sulfamethoxazole-treated patients with a range of in vitro lymphocyte cytotoxicity phenotypes.Pharmacology research & perspectives · 2018Article
- Novobiocin, a Newly Found TRPV1 Inhibitor, Attenuates the Expression of TRPV1 in Rat Intestine and Intestinal Epithelial Cell Line IEC-6.Frontiers in pharmacology · 2018Article
- Transient receptor potential vanilloid 4 (TRPV4) channel as a target of crotamiton and its bimodal effects.Pflugers Archiv : European journal of physiology · 2017Article
- Cellular permeation of large molecules mediated by TRPM8 channels.Neuroscience letters · 2017Article
- Direct Anandamide Activation of TRPV1 Produces Divergent Calcium and Current Responses.Frontiers in molecular neuroscience · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Transient receptor potential vanilloid 1 (TRPV1) has been shown to alter its ionic selectivity profile in a time- and agonist-dependent manner. One hallmark of this dynamic process is an increased permeability to large cations such as N-methyl-D-glucamine (NMDG). In this study, we mutated residues throughout the TRPV1 pore domain to identify loci that contribute to dynamic large cation permeability. Using resiniferatoxin (RTX) as the agonist, we identified multiple gain-of-function substitutions within the TRPV1 pore turret (N628P and S629A), pore helix (F638A), and selectivity filter (M644A) domains. In all of these mutants, maximum NMDG permeability was substantially greater than that recorded in wild type TRPV1, despite similar or even reduced sodium current density. Two additional mutants, located in the pore turret (G618W) and selectivity filter (M644I), resulted in significantly reduced maximum NMDG permeability. M644A and M644I also showed increased and decreased minimum NMDG permeability, respectively. The phenotypes of this panel of mutants were confirmed by imaging the RTX-evoked uptake of the large cationic fluorescent dye YO-PRO1. Whereas none of the mutations selectively altered capsaicin-induced changes in NMDG permeability, the loss-of-function phenotypes seen with RTX stimulation of G618W and M644I were recapitulated in the capsaicin-evoked YO-PRO1 uptake assay. Curiously, the M644A substitution resulted in a loss, rather than a gain, in capsaicin-evoked YO-PRO1 uptake. Modeling of our mutations onto the recently determined TRPV1 structure revealed several plausible mechanisms for the phenotypes observed. We conclude that side chain interactions at a few specific loci within the TRPV1 pore contribute to the dynamic process of ionic selectivity.
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.