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External tetraethylammonium as a molecular caliper for sensing the shape of the outer vestibule of potassium channels.

External tetraethylammonium (TEA+) blocked currents through Kv1.1 channels in a voltage-independent manner between 0 and 100 mV. Lowering extracellular pH (pHo) increased the Kd for TEA+ block. A histidine at position 355 in the Kv1.1 channel protein (homologous to Shaker 425) was responsible for th...

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Detalhes bibliográficos
Main Authors: Bretschneider, F, Wrisch, A, Lehmann-Horn, F, Grissmer, S
Formato: Artigo
Idioma:Inglês
Publicado em: 1999
Assuntos:
Acesso em linha:https://ncbi.nlm.nih.gov/pmc/articles/PMC1300209/
https://ncbi.nlm.nih.gov/pubmed/10233054
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