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Use of weak acids to determine the bulk diffusion limitation of H+ ion conductance through the gramicidin channel.
The addition of 2 M formic acid at pH 3.75 increased the single channel H+ ion conductance of gramicidin channels 12-fold at 200 mV. Other weak acids (acetic, lactic, oxalic) produce a similar, but smaller increase. Formic acid (and other weak acids) also blocks the K+ conductance at pH 3.75, but no...
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| Main Authors: | , |
|---|---|
| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
1988
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| Fag: | |
| Online adgang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1330118/ https://ncbi.nlm.nih.gov/pubmed/2449253 |
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