Evidence map›Paper›PMID 31769408›Full record

ArticleeLife2019

The HCN domain couples voltage gating and cAMP response in hyperpolarization-activated cyclic nucleotide-gated channels.

Alessandro Porro, Andrea Saponaro, Federica Gasparri, Daniel Bauer, Christine Gross, Matteo Pisoni, Gerardo Abbandonato, Kay Hamacher, Bina Santoro, Gerhard Thiel and 1 more

Open access · goldAbstract read
In one paragraph

Article in eLife, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
4.5field-weighted citation impact, top 4% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

49 citing papers in PubMed, 95 citations in OpenAlex.

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  9. 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 · 2025
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  14. A Novel Loss of Function Variant inMolecular syndromology · 2025
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  15. GORK KNature communications · 2025
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  16. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 3 institutions in 3 countries.

Alessandro PorroDepartment of Biosciences, University of Milan, Milan, Italy.ORCID 0000-0003-4845-6165
Andrea SaponaroDepartment of Biosciences, University of Milan, Milan, Italy.ORCID 0000-0001-5035-5174
Federica GasparriDepartment of Biosciences, University of Milan, Milan, Italy.
Daniel BauerDepartment of Biology, TU-Darmstadt, Darmstadt, Germany.
Christine GrossDepartment of Biology, TU-Darmstadt, Darmstadt, Germany.
Matteo PisoniDepartment of Biosciences, University of Milan, Milan, Italy.
Gerardo AbbandonatoDepartment of Biosciences, University of Milan, Milan, Italy.ORCID 0000-0001-7247-051X
Kay HamacherDepartment of Biology, TU-Darmstadt, Darmstadt, Germany.
Bina SantoroDepartment of Neuroscience, Columbia University, New York, United States.ORCID 0000-0002-4277-1992
Gerhard ThielDepartment of Biology, TU-Darmstadt, Darmstadt, Germany.
Anna MoroniDepartment of Biosciences, University of Milan, Milan, Italy.ORCID 0000-0002-1860-406X
University of Milan · ITTechnische Universität Darmstadt · DEColumbia University · US

Funding

Fondazione Cariplo 2014-0796H2020 European Research Council ERC-2015-AdG 695078-noMAGIC
6 · The paper itself

Abstract

Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels control spontaneous electrical activity in heart and brain. Binding of cAMP to the cyclic nucleotide-binding domain (CNBD) facilitates channel opening by relieving a tonic inhibition exerted by the CNBD. Despite high resolution structures of the HCN1 channel in the cAMP bound and unbound states, the structural mechanism coupling ligand binding to channel gating is unknown. Here we show that the recently identified helical HCN-domain (HCND) mechanically couples the CNBD and channel voltage sensing domain (VSD), possibly acting as a sliding crank that converts the planar rotational movement of the CNBD into a rotational upward displacement of the VSD. This mode of operation and its impact on channel gating are confirmed by computational and experimental data showing that disruption of critical contacts between the three domains affects cAMP- and voltage-dependent gating in three HCN isoforms.

Indexed as

Protein DomainsBinding SitesCyclic AMPElectrophysiologyHEK293 CellsHumansHydrophobic and Hydrophilic InteractionsHyperpolarization-Activated Cyclic Nucleotide-Gated ChannelsIon Channel GatingKineticsMolecular Dynamics SimulationProtein ConformationProtein IsoformsThermodynamicsCyclic AMPHyperpolarization-Activated Cyclic Nucleotide-Gated ChannelsProtein IsoformscAMPgatingHCNHCN domainmolecular biophysicsnoneN terminusstructural biology

Identifiers

PMID31769408
PMCPMC6894927
OpenAlexW2990270178

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.