Folding-driven synthesis of oligomers

Keunchan Oh, Kyu-Sung Jeong and Jeffrey S. Moore ()
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Keunchan Oh: Roger Adams Laboratory, University of Illinois at Urbana-Champaign
Kyu-Sung Jeong: Yonsei University
Jeffrey S. Moore: Roger Adams Laboratory, University of Illinois at Urbana-Champaign

Nature, 2001, vol. 414, issue 6866, 889-893

Abstract: Abstract The biological function of biomacromolecules such as DNA and enzymes depends on their ability to perform and control mo-lecular association, catalysis, self-replication or other chemical processes. In the case of proteins in particular, the dependence of these functions on the three-dimensional protein conformation is long known1 and has inspired the development of synthetic oligomers and polymers with the capacity to fold in a controlled manner2,3,4,5,6,7, but it remains challenging to design these so-called ‘foldamers’ so that they are capable of inducing or controlling chemical processes and interactions8,9. Here we show that the stability gained from folding can be used to control the synthesis of oligomers from short chain segments reversibly ligated through an imine metathesis reaction. That is, folding shifts the ligation equilibrium10,11,12,13 in favour of conformationally ordered sequences, so that oligomers having the most stable solution structures form preferentially. Crystallization has previously been used to shift an equilibrium in order to indirectly influence the synthesis of small molecules14, but the present approach to selectively prepare macromolecules with stable conformations directly connects folding and synthesis, emphasizing molecular function rather than structure in polymer synthesis.

Date: 2001
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DOI: 10.1038/414889a

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