Abstract
Solid-state structures, based on a Cambridge Structural Data-base (CSD) search, show that there is a C alpha N/C'O-cis attraction in the torsional system OcisC'C alpha N of valine, causing a chirality chain. The C-alpha configuration controls the chirality of the rotation around the C'-C-alpha bond, which in turn induces a distortion of the planar unit C alpha C'(O)O to a flat asymmetric ...
Abstract
Solid-state structures, based on a Cambridge Structural Data-base (CSD) search, show that there is a C alpha N/C'O-cis attraction in the torsional system OcisC'C alpha N of valine, causing a chirality chain. The C-alpha configuration controls the chirality of the rotation around the C'-C-alpha bond, which in turn induces a distortion of the planar unit C alpha C'(O)O to a flat asymmetric tetrahedron. Conformational "reactions" take place in an energy profile with respect to clockwise and counterclockwise rotation around the C'- C-alpha bond as well as stretching and flattening of the tetrahedron. The molecular property C alpha N/C'O-cis attraction of valine is maintained in its di- and tripeptides.
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