title: Formation of native and non-native interactions in ensembles of denatured ACBP molecules from paramagnetic relaxation enhancement studies.
abstract: Paramagnetic relaxation enhancement measurements in the denatured state of ACBP have provided distance restraints that have been used in computer simulations to determine the conformational ensembles representing the denatured states of ACBP under a variety of conditions. A detailed comparison of the residual structure in the denatured state of ACBP under these different conditions has enabled us to infer that regions in the N and C-terminal parts of the protein sequence have a high tendency to interact in the unfolded state under physiological conditions. By comparing the structural features in the denatured states with those in the transition state for folding we also provided new insights into the mechanism of formation of the native state of this protein.
authors.affiliation: Department of Protein Chemistry, Institute of Molecular Biology, University of Copenhagen, Øster Farimagsgade 2A, 1353 Copenhagen, Denmark.
authors.forename: Sigridur
authors.initials: S
authors.lastname: Kristjansdottir
authors.forename: Kresten
authors.initials: K
authors.lastname: Lindorff-Larsen
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Fieber
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Dobson
authors.forename: Michele
authors.initials: M
authors.lastname: Vendruscolo
authors.forename: Flemming M
authors.initials: FM
authors.lastname: Poulsen
mesh_terms: D000818:Animals; D002417:Cattle; D026261:Diazepam Binding Inhibitor / Q000737:chemistry* / Q000378:metabolism*; D019791:Guanidine / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D008958:Models, Molecular; D019906:Nuclear Magnetic Resonance, Biomolecular; D011489:Protein Denaturation / Q000187:drug effects; D017510:Protein Folding; D017434:Protein Structure, Tertiary; D013113:Spin Labels
chemical_list: D026261:Diazepam Binding Inhibitor; D013113:Spin Labels; D019791:Guanidine