Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

The development of efficient protein refolding techniques remains a challenge in biotechnology. In that context, it has recently been reported that the addition of 2-methyl-2, 4-pentanediol (MPD) to sodium dodecyl sulfate (SDS) allows the renaturation of both soluble and membrane proteins. The present work combines experimental (dynamic light scattering; DLS) and theoretical (molecular dynamics) approaches to study the molecular basis of the association between SDS and MPD, in order to understand its relevance in the refolding process. DLS shows the micelle dissociation in the presence of molar concentrations of MPD, and simulations reveal that this process results from a screening of the negative charge on the SDS headgroup and a minimization of the solvent (water) accessibility of the detergent tail. This suggests a mechanism whereby the combination of these effects leads to the shift from a "harsh" to a "gentle" detergent behavior, which in turn promotes a productive refolding of the protein.

Original publication

DOI

10.1016/j.colsurfb.2013.10.023

Type

Journal article

Journal

Colloids Surf B Biointerfaces

Publication Date

01/02/2014

Volume

114

Pages

357 - 362

Keywords

2-methyl-2, 4-pentanediol, AT, Alcohol, CG, Cosolvent, DLS, Detergent, MPD, Micelle dissociation, Molecular dynamics, Protein refolding, SDS, atomistic, coarse-grain, dynamic light scattering, sodium dodecyl sulfate, Glycols, Hydrogen Bonding, Light, Micelles, Molecular Dynamics Simulation, Scattering, Radiation, Sodium Dodecyl Sulfate, Time Factors