Scientific article
Open access

Transmembrane anion transport mediated by halogen-bond donors

Published inNature communications, vol. 3
Publication date2012

In biology and chemistry, the transport of anions across lipid bilayer membranes is usually achieved by sophisticated supramolecular architectures. Significant size reduction of transporters is hampered by the intrinsically hydrophilic nature of typical anion-binding functionalities, hydrogen-bond donors or cations. To maximize the atom efficiency of anion transport, the hydrophobic nature, directionality, and strength of halogen bonds seem promising. Unlike the ubiquitous, structurally similar hydrogen bonds, halogen bonds have not been explored for anion transport. Here we report that transport across lipid bilayers can be achieved with small perfluorinated molecules that are equipped with strong halogen-bond donors. Transport is observed with trifluoroiodomethane (boiling point=−22 °C); that is, it acts as a 'single-carbon' transporter. Contrary to the destructive action of small-molecule detergents, transport with halogen bonds is leakage-free, cooperative, non-ohmic and highly selective, with anion/cation permeability ratios <37.

Citation (ISO format)
VARGAS JENTZSCH, Rodrigo Andreas et al. Transmembrane anion transport mediated by halogen-bond donors. In: Nature communications, 2012, vol. 3. doi: 10.1038/ncomms1902
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Article (Published version)
Article (Accepted version)
ISSN of the journal2041-1723

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Creation06/20/2012 10:09:00 AM
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