Precisely how proteins snake their way through channels in cell membranes is unclear. Complexes between the SecY channel and its motor protein, and the use of a 'molecular endoscope', provide fascinating clues.
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Economou, A. Clamour for a kiss. Nature 455, 879–880 (2008). https://doi.org/10.1038/455879a
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DOI: https://doi.org/10.1038/455879a
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SecA, a remarkable nanomachine
Cellular and Molecular Life Sciences (2011)