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Uniformly Nucleobase‐Functionalized β‐Peptide Helices: Watson–Crick Pairing or Nonspecific Aggregation
Author(s) -
Weiß Angelina,
Diederichsen Ulf
Publication year - 2007
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200700444
Subject(s) - nucleobase , chemistry , molecular structure of nucleic acids: a structure for deoxyribose nucleic acid , antiparallel (mathematics) , base pair , hydrogen bond , helix (gastropod) , folding (dsp implementation) , peptide , crystallography , pairing , molecular recognition , stereochemistry , dna , molecule , topology (electrical circuits) , biochemistry , organic chemistry , combinatorics , ecology , physics , superconductivity , quantum mechanics , snail , magnetic field , electrical engineering , biology , engineering , mathematics
The organization and architecture of helices is fundamental in folding of protein tertiary structures. Therefore, stable β‐peptide helices are used as models for the selective organization of secondary structures. Nucleobases are already established as recognition elements to organize two β‐peptide helices in antiparallel orientation. The investigation of β‐peptide helices uniformly functionalized with one type of nucleobases provided further insight in the recognition mode and requirements for specific interaction within the linear and very rigid helical backbone topology. Specific helix interaction based on base pair recognition is predominant as soon as Watson–Crick pairing is allowed. If the hydrogen bonding donor/acceptor pattern prohibits the Watson–Crick geometry, a quite stable nonspecific interaction was found based on aromatic interactions or on a nonspecific hydrogen bonding network. The latter aggregation was also confirmed with tyrosine side chains.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)