ArticleNature communications2021
Electromechanical coupling mechanism for activation and inactivation of an HCN channel.
Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
What it found
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Who cites it
20 citing papers in PubMed, 32 citations in OpenAlex.
- An inter-subunit path is required for entropically-driven and negatively cooperative binding of cyclic nucleotides in the HCN2 channel.Communications biology · 2026Article
- Extracellular salt bridge networks around S4 implicated in HCN channel gating and heart disease.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Voltage sensor conformations induced by LQTS-associated mutations in hERG potassium channels.Nature communications · 2025Article
- An Allosteric Model for Electromechanical Coupling in Cardiac CNBD Channels.bioRxiv : the preprint server for biology · 2025Article
- Deep Learning-Based Ion Channel Kinetics Analysis for Automated Patch Clamp Recording.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Article
- Membrane lipid nanodomains modulate HCN pacemaker channels in nociceptor DRG neurons.Nature communications · 2024Article
- Loose Coupling between the Voltage Sensor and the Activation Gate in Mammalian HCN Channels Suggests a Gating Mechanism.International journal of molecular sciences · 2024Article
- Direct regulation of the voltage sensor of HCN channels by membrane lipid compartmentalization.Nature communications · 2023Article
- Chromophore carbonyl twisting in fluorescent biosensors encodes direct readout of protein conformations with multicolor switching.Communications chemistry · 2023Article
- Conformational trajectory of allosteric gating of the human cone photoreceptor cyclic nucleotide-gated channel.Nature communications · 2023Article
- Interplay between VSD, pore, and membrane lipids in electromechanical coupling in HCN channels.eLife · 2023Article
- Similar voltage-sensor movement in spHCN channels can cause closing, opening, or inactivation.The Journal of general physiology · 2023Article
- Bibliometric analysis of hyperpolarization-activated cyclic nucleotide-gated (HCN)channels research (2004-2020).Channels (Austin, Tex.) · 2022Article
- Paradigm shift: new concepts for HCN4 function in cardiac pacemaking.Pflugers Archiv : European journal of physiology · 2022Review
- Enlightening activation gating in P2X receptors.Purinergic signalling · 2022Review
- Propofol, an Anesthetic Agent, Inhibits HCN Channels through the Allosteric Modulation of the cAMP-Dependent Gating Mechanism.Biomolecules · 2022Article
- Neuronal KCNQ2/3 channels are recruited to lipid raft microdomains by palmitoylation of BACE1.The Journal of general physiology · 2022Article
- Uncoupling of Voltage- and Ligand-Induced Activation in HCN2 Channels by Glycine Inserts.Frontiers in physiology · 2022Article
- Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Pacemaker hyperpolarization-activated cyclic nucleotide-gated (HCN) ion channels exhibit a reversed voltage-dependent gating, activating by membrane hyperpolarization instead of depolarization. Sea urchin HCN (spHCN) channels also undergo inactivation with hyperpolarization which occurs only in the absence of cyclic nucleotide. Here we applied transition metal ion FRET, patch-clamp fluorometry and Rosetta modeling to measure differences in the structural rearrangements between activation and inactivation of spHCN channels. We found that removing cAMP produced a largely rigid-body rotation of the C-linker relative to the transmembrane domain, bringing the A' helix of the C-linker in close proximity to the voltage-sensing S4 helix. In addition, rotation of the C-linker was elicited by hyperpolarization in the absence but not the presence of cAMP. These results suggest that - in contrast to electromechanical coupling for channel activation - the A' helix serves to couple the S4-helix movement for channel inactivation, which is likely a conserved mechanism for CNBD-family channels.
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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.