PMID:10567683
| Citation |
Preuss, M and Miller, AD (1999) Interaction with GroEL destabilises non-amphiphilic secondary structure in a peptide. FEBS Lett. 461:131-5 |
|---|---|
| Abstract |
The Escherichia coli molecular chaperone GroEL can functionally interact with non-native forms of many proteins. An inherent property of non-native proteins is the exposure of hydrophobic residues and the presence of secondary structure elements. Whether GroEL unfolds or stabilises these structural elements in protein substrates as a result of binding has been the subject of extended debate in the literature. Based on our studies of model peptides of pre-formed helical structure, we conclude that the final state of a GroEL-bound substrate is dependent on the conformational flexibility of the substrate protein and the distribution of hydrophobic residues, with optimal association when these are able to present a cluster of hydrophobic residues in the binding interface. |
| Links | |
| Keywords |
Chaperonin 60/chemistry; Chemistry, Physical; Hydrogen Bonding; Oligopeptides/chemistry; Physicochemical Phenomena; Protein Folding; Protein Structure, Secondary |
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