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Cover Picture Single DNA Rotaxanes of a Transmembrane Pore Protein (Angew. Chem. Int. Ed. 232004)

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Cover Picture
Jorge Snchez-Quesada, Alan Saghatelian, Stephen Cheley,
Hagan Bayley, and M. Reza Ghadiri*
A single rotaxane structure created by threading and capturing a DNA–poly(ethylene
glycol) (DNA–PEG) strand inside an a-hemolysin (a-HL) transmembrane pore
protein is described by M. R. Ghadiri and co-workers on page 3063 ff. The DNA–aHL rotaxanes exhibit a reversible two-state switching capacity that depends on the
applied transmembrane potential, the orientation, and the method of threading and
capture used. Functional rotaxanes might provide a means for critically assessing the
feasibility of the pore-mediated single-molecule DNA sequencing hypothesis.
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int, cover, angel, chem, protein, pore, single, dna, transmembrane, rotaxanes, picture, 232004
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