Biochem Biophys Res Commun. 2000 Sep 24;276(2):393-8.

Is the unfolded state the Rosetta Stone of the protein folding problem?

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IFM-Department of Chemistry, Linköping University, Linköping, S-581 83, Sweden.

Abstract

Solving the protein folding problem is one of the most challenging tasks in the post genomic era. Identification of folding-initiation sites is very important in order to understand the protein folding mechanism. Detection of residual structure in unfolded proteins can yield important clues to the initiation sites in protein folding. A substantial number of studied proteins possess residual structure in hydrophobic regions clustered together in the protein core. These stable structures can work as seeds in the folding process. In addition, local preferences for secondary structure in the form of turns for beta-sheet initiation and helical turns for alpha-helix formation can guide the folding reaction. In this respect the unfolded states, studied at increasing structural resolution, can be the Rosetta Stone of the protein folding problem.

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