Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Chiral Amplification of Oligopeptides in Two-Dimensional Crystalline Self-Assemblies on Water
Ist Teil von
Science (American Association for the Advancement of Science), 2002-02, Vol.295 (5558), p.1266-1269
Ort / Verlag
Washington, DC: American Society for the Advancement of Science
Erscheinungsjahr
2002
Quelle
MEDLINE
Beschreibungen/Notizen
Differences in the two-dimensional packing arrangements of racemic and enantiomeric crystalline self-assemblies on the water surface of amphiphilic activated analogs of lysine and glutamic acid have been used to prepare oligopeptides of homochiral sequence and oligopeptides of single handedness from chiral nonracemic mixtures. The crystalline structures on the water surface were determined by grazing incidence x-ray diffraction and the diastereomeric composition of the oligopeptides by matrix-assisted laser desorption time-of-flight mass spectrometry with enantio-labeling. These results suggest that reactivity of ordered clusters at interfaces might have played a role in the generation of early homochiral biopolymers.