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- W2895839634 endingPage "4298" @default.
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- W2895839634 abstract "Computationally designed peptides form desired antiparallel, tetrameric coiled-coil bundles that hierarchically assemble into a variety of well-controlled nanostructures depending on aqueous solution conditions. The bundles selectively self-assemble into different structures: nanotubes, platelets, or needle-like structures at solution pH values of 4.5, 7, and 10, respectively. The self-assembly produces hollow tubes or elongated needle-like structures at pH conditions associated with charged bundles (pH 4.5 or 10); at neutral pH, near the pI of the bundle, a plate-like self-assembled structure forms. Transmission electron microscopy and small-angle X-ray scattering show the nanotubes to be uniform with a tube diameter of ∼13 nm and lengths of up to several μm, yielding aspect ratios >1000. Combining the measured nanostructure geometry with the apparent charged states of the constituent amino acids, a tilted-bundle packing model is proposed for the formation of the homogeneous nanotubes. This work demonstrates the successful use of assembly pathway control for the construction of nanostructures with diverse, well-structured morphologies associated with the folding and self-association of a single type of molecule." @default.
- W2895839634 created "2018-10-26" @default.
- W2895839634 creator A5002889909 @default.
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- W2895839634 creator A5054044138 @default.
- W2895839634 creator A5062296756 @default.
- W2895839634 creator A5081116859 @default.
- W2895839634 creator A5081158417 @default.
- W2895839634 date "2018-10-09" @default.
- W2895839634 modified "2023-10-15" @default.
- W2895839634 title "Nanotubes, Plates, and Needles: Pathway-Dependent Self-Assembly of Computationally Designed Peptides" @default.
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