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Cover Picture Chiral Borromeates (Angew. Chem. Int. Ed. 252006)

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Cover Picture
Cari D. Pentecost, Andrea J. Peters, Kelly S. Chichak,
Gareth W. V. Cave, Stuart J. Cantrill, and J. Fraser Stoddart*
Chirality is transferred from 12 stereogenic centers, all of the same chirality, to the six
templating zinc(II) ions in each enantiomer of an optically active Borromeate.
Recognizing that the three-component Borromean link is topologically achiral, J. F.
Stoddart et al. describe in their Communication on page 4099 ff. the dynamic
stereospecific synthesis of both all-R and all-S enantiomers of the Borromeate and
report the X-ray crystal structure of the all-R enantiomer.
Biomolecular Modeling
In their Review on page 4064 ff. W. F. van Gunsteren et al. introduce the basis for
computational methods that describe the conformational dynamics in oligopeptides
and related biomolecules.
Graft Polymerization and Switching
An optically reversible switching membrane surface is developed by G. Belfort and
co-workers as described in their Communication on page 4094 ff. They combine their
UV grafting process with the photoresponsive properties of spiropyran molecules.
Protein Modifications
B. Koksch et al. study in their Communication on page 4198 ff. the influence of fluoro
substituents in the amino acid side chains on the interactions of a native polypeptide.
The fluorination of alkyl groups has electrostatic and steric consequences for the
stability of hydrophobic protein interactions.
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