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Kinetics and mechanism of proton transport across membrane nanopores.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Dellago, Christoph Hummer, Gerhard |
| Copyright Year | 2006 |
| Abstract | We use computer simulations to study the kinetics and mechanism of proton passage through a narrow-pore carbon-nanotube membrane separating reservoirs of liquid water. Free energy and rate constant calculations show that protons move across the membrane diffusively along single-file chains of hydrogen-bonded water molecules. Proton passage through the membrane is opposed by a high barrier in the effective potential, reflecting the large electrostatic penalty for desolvation and reminiscent of charge exclusion in biological water channels. At neutral pH, we estimate a translocation rate of about 1 proton per hour and tube. |
| Starting Page | 245901 |
| Ending Page | 245901 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.cms.tuwien.ac.at/media/pdf/publications/PRL-97-245901-2006.pdf |
| PubMed reference number | 17280300v1 |
| Volume Number | 97 |
| Issue Number | 24 |
| Journal | Physical review letters |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Exclusion Kinetics (discipline) Nanotubes Proton-Translocating ATPases Protons Reservoir Device Component Tissue membrane free energy per hour water channel |
| Content Type | Text |
| Resource Type | Article |
