2018
Structural basis and energy landscape for the Ca2+ gating and calmodulation of the Kv7.2 K+ channel
Bernardo-Seisdedos G, Nuñez E, Gomis-Perez C, Malo C, Villarroel Á, Millet O. Structural basis and energy landscape for the Ca2+ gating and calmodulation of the Kv7.2 K+ channel. Proceedings Of The National Academy Of Sciences Of The United States Of America 2018, 115: 2395-2400. PMID: 29463698, PMCID: PMC5873240, DOI: 10.1073/pnas.1800235115.Peer-Reviewed Original ResearchConceptsC-lobeKey biological signalsPrincipal molecular componentsAssociation of helicesTransmembrane regionStructural basisFunction of CaKv7.2 channelsBasal cytosolic CaConformational rearrangementsN-lobeInactive stateKey controllerMolecular componentsCytosolic CaIntracellular CaKv7.2HelixInactive channelsM-currentBiological signalsCalcification stateMillisecond timeNeuronal excitabilityPopulated excited statesLack of correlation between surface expression and currents in epileptogenic AB-calmodulin binding domain Kv7.2 potassium channel mutants
Alaimo A, Etxeberria A, Gómez-Posada JC, Gomis-Perez C, Fernández-Orth J, Malo C, Villarroel A. Lack of correlation between surface expression and currents in epileptogenic AB-calmodulin binding domain Kv7.2 potassium channel mutants. Channels 2018, 12: 299-310. PMID: 30126342, PMCID: PMC6161613, DOI: 10.1080/19336950.2018.1511512.Peer-Reviewed Original Research
2017
Calmodulin confers calcium sensitivity to the stability of the distal intracellular assembly domain of Kv7.2 channels
Alaimo A, Nuñez E, Aivar P, Fernández-Orth J, Gomis-Perez C, Bernardo-Seisdedos G, Malo C, Villarroel A. Calmodulin confers calcium sensitivity to the stability of the distal intracellular assembly domain of Kv7.2 channels. Scientific Reports 2017, 7: 13425. PMID: 29044210, PMCID: PMC5647379, DOI: 10.1038/s41598-017-13811-4.Peer-Reviewed Original Research
2016
Ubiquitin-specific Protease 36 (USP36) Controls Neuronal Precursor Cell-expressed Developmentally Down-regulated 4-2 (Nedd4-2) Actions over the Neurotrophin Receptor TrkA and Potassium Voltage-gated Channels 7.2/3 (Kv7.2/3)*
Anta B, Martín-Rodríguez C, Gomis-Perez C, Calvo L, López-Benito S, Calderón-García AA, Vicente-García C, Villarroel Á, Arévalo JC. Ubiquitin-specific Protease 36 (USP36) Controls Neuronal Precursor Cell-expressed Developmentally Down-regulated 4-2 (Nedd4-2) Actions over the Neurotrophin Receptor TrkA and Potassium Voltage-gated Channels 7.2/3 (Kv7.2/3)*. Journal Of Biological Chemistry 2016, 291: 19132-19145. PMID: 27445338, PMCID: PMC5009282, DOI: 10.1074/jbc.m116.722637.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell DifferentiationEndosomal Sorting Complexes Required for TransportGene Expression RegulationHEK293 CellsHumansKCNQ2 Potassium ChannelKCNQ3 Potassium ChannelMiceNedd4 Ubiquitin Protein LigasesNeural Stem CellsPC12 CellsProtein BindingRatsReceptor, trkAUbiquitin ThiolesteraseUbiquitin-Protein LigasesConceptsNedd4-2Association of TrkAE3 ubiquitin ligasesTrkA ubiquitinationPC12 cell differentiationTrkA neurotrophin receptorTrkA activationNeuronal precursor cellsUbiquitin ligasesExpression disruptsChannel regulationUbiquitinationUSP36Cell differentiationImportant regulatorPrecursor cellsComplex formationActivation kineticsNeurotrophin receptors TrkAReceptor TrkATrkARegulationExpressionLigasesNeurotrophin receptor
2015
An unconventional calmodulin-anchoring site within the AB module of Kv7.2 channels
Gomis-Perez C, Alaimo A, Fernandez-Orth J, Alberdi A, Aivar-Mateo P, Bernardo-Seisdedos G, Malo C, Areso P, Felipe A, Villarroel A. An unconventional calmodulin-anchoring site within the AB module of Kv7.2 channels. Journal Of Cell Science 2015, 128: 3155-3163. PMID: 26148514, DOI: 10.1242/jcs.174128.Peer-Reviewed Original Research
2012
Cooperativity between calmodulin-binding sites in Kv7.2 channels
Alaimo A, Alberdi A, Gomis-Perez C, Fernández-Orth J, Gómez-Posada JC, Areso P, Villarroel A. Cooperativity between calmodulin-binding sites in Kv7.2 channels. Journal Of Cell Science 2012, 126: 244-253. PMID: 23203804, DOI: 10.1242/jcs.114082.Peer-Reviewed Original ResearchSurface Expression and Subunit Specific Control of Steady Protein Levels by the Kv7.2 Helix A-B Linker
Aivar P, Fernández-Orth J, Gomis-Perez C, Alberdi A, Alaimo A, Rodríguez MS, Giraldez T, Miranda P, Areso P, Villarroel A. Surface Expression and Subunit Specific Control of Steady Protein Levels by the Kv7.2 Helix A-B Linker. PLOS ONE 2012, 7: e47263. PMID: 23115641, PMCID: PMC3480381, DOI: 10.1371/journal.pone.0047263.Peer-Reviewed Original ResearchConceptsB linkerPlasma membraneHelix ATetrameric channel assemblyIntracellular C-terminusAmino acid sequenceSteady-state amountsSurface expressionSteady-state levelsProtein degradationAcid sequenceC-terminusChannel assemblyFunctional channelsIntracellular distributionProtein levelsProteinSpecific controlKv7.2Detectable impactM-currentExpressionNeuronal excitabilityMembraneIntrinsic signals