title: Structural codons: linearity/helicity interconversion by pyridine/pyrimidine exchange in molecular strands.
abstract: Pyridine and pyrimidine groups connected through amide functions can be combined into specific sequences that self-organize into either helical or linear structures enforced by the formation of intramolecular hydrogen bonds.
authors.affiliation: Institut de Science et d'Ingénierie Supramoléculaires (ISIS), 8 allée Gaspard Monge, BP 70028 67083 Strasbourg cedex, France.
authors.forename: Ibon
authors.initials: I
authors.lastname: Odriozola
authors.forename: Nathalie
authors.initials: N
authors.lastname: Kyritsakas
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Lehn