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dc.contributor.author
Monti, José Luis Eugenio
dc.contributor.author
Rossi, Rolando Carlos
dc.contributor.author
Montes, Monica Raquel
dc.date.available
2016-02-29T18:56:04Z
dc.date.issued
2013-05
dc.identifier.citation
Monti, José Luis Eugenio; Rossi, Rolando Carlos; Montes, Monica Raquel; Alternative cycling modes of the Na+/K+-ATPase in the presence of either Na+ or Rb+; Elsevier; Biochimica And Biophysica Acta; 1828; 5; 5-2013; 1374-1383
dc.identifier.issn
0006-3002
dc.identifier.uri
http://hdl.handle.net/11336/4524
dc.description.abstract
A comprehensive study of the interaction between Na+ and K+ with the Na+/K+-ATPase requires dissecting the incidence of alternative cycling modes on activity measurements in which one or both of these cations are absent. With this aim, we used membrane fragments containing pig-kidney Na+/K+-ATPase to perform measurements, at 25ºC and pH=7.4, of ATPase activity and steady state levels of (i) intermediates containing occluded Rb+ at different [Rb+] in media lacking Na+, and (ii) phosphorylated intermediates at different [Na+] in media lacking Rb+. Most relevant results are: (1) Rb+ can be occluded through an ATPasic cycling mode that takes place in the absence of Na+ ions, (2) the kinetic behavior of the phosphoenzyme formed by ATP in the absence of Na+ is different from the one that is formed with Na+, and (3) binding of Na+ to transport sites during catalysis is not at random unless rapid equilibrium holds.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Na+/K+-Atpase
dc.subject
Steady-State Kinetics
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Phosphoenzyme
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Rb+-Occlusion
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Atpase Activity
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Minimal Model
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Biofísica
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Alternative cycling modes of the Na+/K+-ATPase in the presence of either Na+ or Rb+
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
1828
dc.journal.number
5
dc.journal.pagination
1374-1383
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Monti, José Luis Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina
dc.description.fil
Fil: Rossi, Rolando Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina
dc.description.fil
Fil: Montes, Monica Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina
dc.journal.title
Biochimica And Biophysica Acta
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0005273613000229
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/issn/0006-3002
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.bbamem.2013.01.010
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