Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR
- Autores
- Riedelsberger, Janin; Sharma, Tripti; Gonzalez, Wendy; Gajdanowicz, Pawel; Morales Navarro, Samuel Elías; Garcia-Mata, Carlos; Mueller Roeber, Bernd; González Nilo, Fernando Danilo; Blatt, Michael R.; Dreyer, Ingo
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The family of voltage-gated (Shaker-like) potassium channels in plants includes both inward-rectifying (Kin) channels that allow plant cells to accumulate K+ and outward-rectifying (Kout) channels that mediate K+ efflux. Despite their close structural similarities, Kin and Kout channels differ in their gating sensitivity towards voltage and the extracellular K+ concentration. We have carried out a systematic program of domain swapping between the Kout channel SKOR and the Kin channel KAT1 to examine the impacts on gating of the pore regions, the S4, S5, and the S6 helices. We found that, in particular, the N-terminal part of the S5 played a critical role in KAT1 and SKOR gating. Our findings were supported by molecular dynamics of KAT1 and SKOR homology models. In silico analysis revealed that during channel opening and closing, displacement of certain residues, especially in the S5 and S6 segments, is more pronounced in KAT1 than in SKOR. From our analysis of the S4–S6 region, we conclude that gating (and K+-sensing in SKOR) depend on a number of structural elements that are dispersed over this ∼145-residue sequence and that these place additional constraints on configurational rearrangement of the channels during gating.
Fil: Riedelsberger, Janin . Universität Potsdam; Alemania. Max-Planck Institute of Molecular Plant Physiology; Alemania
Fil: Sharma, Tripti . Universität Potsdam; Alemania. Max-Planck Institute of Molecular Plant Physiology; Alemania
Fil: Gonzalez, Wendy . Universidad de Talca; Chile
Fil: Gajdanowicz, Pawel . Universität Potsdam; Alemania
Fil: Morales Navarro, Samuel Elías . Universidad de Talca; Chile
Fil: Garcia-Mata, Carlos. University Of Glasgow; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mueller Roeber, Bernd. Max-Planck Institute of Molecular Plant Physiology; Alemania. Universität Potsdam; Alemania
Fil: González Nilo, Fernando Danilo . Universidad de Talca; Chile
Fil: Blatt, Michael R. . University Of Glasgow; Reino Unido
Fil: Dreyer, Ingo . Universität Potsdam; Alemania - Materia
-
Arabidopsis
K+ Channel
Outward Rectifier
Inward Rectifier
Channel Protein Structure
Channel Protein–Cation Interaction
Gating
K+-Dependent - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/13211
Ver los metadatos del registro completo
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network_name_str |
CONICET Digital (CONICET) |
spelling |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKORRiedelsberger, Janin Sharma, Tripti Gonzalez, Wendy Gajdanowicz, Pawel Morales Navarro, Samuel Elías Garcia-Mata, CarlosMueller Roeber, BerndGonzález Nilo, Fernando Danilo Blatt, Michael R. Dreyer, Ingo ArabidopsisK+ ChannelOutward RectifierInward RectifierChannel Protein StructureChannel Protein–Cation InteractionGatingK+-Dependenthttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The family of voltage-gated (Shaker-like) potassium channels in plants includes both inward-rectifying (Kin) channels that allow plant cells to accumulate K+ and outward-rectifying (Kout) channels that mediate K+ efflux. Despite their close structural similarities, Kin and Kout channels differ in their gating sensitivity towards voltage and the extracellular K+ concentration. We have carried out a systematic program of domain swapping between the Kout channel SKOR and the Kin channel KAT1 to examine the impacts on gating of the pore regions, the S4, S5, and the S6 helices. We found that, in particular, the N-terminal part of the S5 played a critical role in KAT1 and SKOR gating. Our findings were supported by molecular dynamics of KAT1 and SKOR homology models. In silico analysis revealed that during channel opening and closing, displacement of certain residues, especially in the S5 and S6 segments, is more pronounced in KAT1 than in SKOR. From our analysis of the S4–S6 region, we conclude that gating (and K+-sensing in SKOR) depend on a number of structural elements that are dispersed over this ∼145-residue sequence and that these place additional constraints on configurational rearrangement of the channels during gating.Fil: Riedelsberger, Janin . Universität Potsdam; Alemania. Max-Planck Institute of Molecular Plant Physiology; AlemaniaFil: Sharma, Tripti . Universität Potsdam; Alemania. Max-Planck Institute of Molecular Plant Physiology; AlemaniaFil: Gonzalez, Wendy . Universidad de Talca; ChileFil: Gajdanowicz, Pawel . Universität Potsdam; AlemaniaFil: Morales Navarro, Samuel Elías . Universidad de Talca; ChileFil: Garcia-Mata, Carlos. University Of Glasgow; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mueller Roeber, Bernd. Max-Planck Institute of Molecular Plant Physiology; Alemania. Universität Potsdam; AlemaniaFil: González Nilo, Fernando Danilo . Universidad de Talca; ChileFil: Blatt, Michael R. . University Of Glasgow; Reino UnidoFil: Dreyer, Ingo . Universität Potsdam; AlemaniaElsevier2010-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/13211Riedelsberger, Janin ; Sharma, Tripti ; Gonzalez, Wendy ; Gajdanowicz, Pawel ; Morales Navarro, Samuel Elías ; et al.; Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR; Elsevier; Molecular Plant; 3; 1; 1-2010; 236-2451674-2052enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1674205214604093info:eu-repo/semantics/altIdentifier/doi/10.1093/mp/ssp096info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:42:58Zoai:ri.conicet.gov.ar:11336/13211instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:42:59.039CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR |
title |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR |
spellingShingle |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR Riedelsberger, Janin Arabidopsis K+ Channel Outward Rectifier Inward Rectifier Channel Protein Structure Channel Protein–Cation Interaction Gating K+-Dependent |
title_short |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR |
title_full |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR |
title_fullStr |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR |
title_full_unstemmed |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR |
title_sort |
Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR |
dc.creator.none.fl_str_mv |
Riedelsberger, Janin Sharma, Tripti Gonzalez, Wendy Gajdanowicz, Pawel Morales Navarro, Samuel Elías Garcia-Mata, Carlos Mueller Roeber, Bernd González Nilo, Fernando Danilo Blatt, Michael R. Dreyer, Ingo |
author |
Riedelsberger, Janin |
author_facet |
Riedelsberger, Janin Sharma, Tripti Gonzalez, Wendy Gajdanowicz, Pawel Morales Navarro, Samuel Elías Garcia-Mata, Carlos Mueller Roeber, Bernd González Nilo, Fernando Danilo Blatt, Michael R. Dreyer, Ingo |
author_role |
author |
author2 |
Sharma, Tripti Gonzalez, Wendy Gajdanowicz, Pawel Morales Navarro, Samuel Elías Garcia-Mata, Carlos Mueller Roeber, Bernd González Nilo, Fernando Danilo Blatt, Michael R. Dreyer, Ingo |
author2_role |
author author author author author author author author author |
dc.subject.none.fl_str_mv |
Arabidopsis K+ Channel Outward Rectifier Inward Rectifier Channel Protein Structure Channel Protein–Cation Interaction Gating K+-Dependent |
topic |
Arabidopsis K+ Channel Outward Rectifier Inward Rectifier Channel Protein Structure Channel Protein–Cation Interaction Gating K+-Dependent |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The family of voltage-gated (Shaker-like) potassium channels in plants includes both inward-rectifying (Kin) channels that allow plant cells to accumulate K+ and outward-rectifying (Kout) channels that mediate K+ efflux. Despite their close structural similarities, Kin and Kout channels differ in their gating sensitivity towards voltage and the extracellular K+ concentration. We have carried out a systematic program of domain swapping between the Kout channel SKOR and the Kin channel KAT1 to examine the impacts on gating of the pore regions, the S4, S5, and the S6 helices. We found that, in particular, the N-terminal part of the S5 played a critical role in KAT1 and SKOR gating. Our findings were supported by molecular dynamics of KAT1 and SKOR homology models. In silico analysis revealed that during channel opening and closing, displacement of certain residues, especially in the S5 and S6 segments, is more pronounced in KAT1 than in SKOR. From our analysis of the S4–S6 region, we conclude that gating (and K+-sensing in SKOR) depend on a number of structural elements that are dispersed over this ∼145-residue sequence and that these place additional constraints on configurational rearrangement of the channels during gating. Fil: Riedelsberger, Janin . Universität Potsdam; Alemania. Max-Planck Institute of Molecular Plant Physiology; Alemania Fil: Sharma, Tripti . Universität Potsdam; Alemania. Max-Planck Institute of Molecular Plant Physiology; Alemania Fil: Gonzalez, Wendy . Universidad de Talca; Chile Fil: Gajdanowicz, Pawel . Universität Potsdam; Alemania Fil: Morales Navarro, Samuel Elías . Universidad de Talca; Chile Fil: Garcia-Mata, Carlos. University Of Glasgow; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Mueller Roeber, Bernd. Max-Planck Institute of Molecular Plant Physiology; Alemania. Universität Potsdam; Alemania Fil: González Nilo, Fernando Danilo . Universidad de Talca; Chile Fil: Blatt, Michael R. . University Of Glasgow; Reino Unido Fil: Dreyer, Ingo . Universität Potsdam; Alemania |
description |
The family of voltage-gated (Shaker-like) potassium channels in plants includes both inward-rectifying (Kin) channels that allow plant cells to accumulate K+ and outward-rectifying (Kout) channels that mediate K+ efflux. Despite their close structural similarities, Kin and Kout channels differ in their gating sensitivity towards voltage and the extracellular K+ concentration. We have carried out a systematic program of domain swapping between the Kout channel SKOR and the Kin channel KAT1 to examine the impacts on gating of the pore regions, the S4, S5, and the S6 helices. We found that, in particular, the N-terminal part of the S5 played a critical role in KAT1 and SKOR gating. Our findings were supported by molecular dynamics of KAT1 and SKOR homology models. In silico analysis revealed that during channel opening and closing, displacement of certain residues, especially in the S5 and S6 segments, is more pronounced in KAT1 than in SKOR. From our analysis of the S4–S6 region, we conclude that gating (and K+-sensing in SKOR) depend on a number of structural elements that are dispersed over this ∼145-residue sequence and that these place additional constraints on configurational rearrangement of the channels during gating. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/13211 Riedelsberger, Janin ; Sharma, Tripti ; Gonzalez, Wendy ; Gajdanowicz, Pawel ; Morales Navarro, Samuel Elías ; et al.; Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR; Elsevier; Molecular Plant; 3; 1; 1-2010; 236-245 1674-2052 |
url |
http://hdl.handle.net/11336/13211 |
identifier_str_mv |
Riedelsberger, Janin ; Sharma, Tripti ; Gonzalez, Wendy ; Gajdanowicz, Pawel ; Morales Navarro, Samuel Elías ; et al.; Distributed structures underlie gating differences between the K in Channel KAT1 and the K out Channel SKOR; Elsevier; Molecular Plant; 3; 1; 1-2010; 236-245 1674-2052 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1674205214604093 info:eu-repo/semantics/altIdentifier/doi/10.1093/mp/ssp096 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613352900263936 |
score |
13.070432 |