ArticleNature structural & molecular biology2025
Structure and function of a broad-range thermal receptor in myriapods.
Article in Nature structural & molecular biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Thermoring basis for the proton-driven heat activation of a cation-selective channel in myriapods.Scientific reports · 2025Article
- A proton-gated channel identified in the centipede antenna.EMBO reports · 2025Article
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Authors and funding
11 authors.
Funding
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Abstract
Broad-range thermal receptor 1 (BRTNaC1), activated by heat at low extracellular pH, was recently identified in myriapods. Although the overexpression of BRTNaC1 leads to robust heat-activated current with a cation selectivity profile, the structure of this receptor and how it is gated by proton and heat remain to be investigated. Here we determine cryogenic electron microscopy structures of BRTNaC1 in the apo, proton-induced and heated states. Based on these structures, patch-clamp recordings and molecular dynamic simulations, we found that a 'twist the wrist' mechanism is used for proton activation of BRTNaC1, while heat induces broad conformational changes in BRTNaC1, including rotation and shift in the transmembrane helices to open this channel. Moreover, as testosterone inhibited BRTNaC1 activation, we identified four clustered residues important for such inhibition. Therefore, our study has established the structural basis for ligand and temperature gating in the BRTNaC1 ion channel.
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Registered trials
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