Related Experiment Video
Updated: Oct 17, 2025

Measuring Biomolecular DSC Profiles with Thermolabile Ligands to Rapidly Characterize Folding and Binding Interactions
Published on: November 21, 2017
Temperature and Guanidine Hydrochloride Effects on the Folding Thermodynamics of WW Domain and Variants
Meng Qin1,2, Natalia Denesyuk3, Zhenxing Liu4
1Biophysics Program, Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742, United States.
Abstract:
We used simulations based on an all-atom Go model to calculate the folding temperatures (Tfs) and free energies (ΔGs) of two variants of the WW domain, which is a small all-β-sheet protein. The results, without adjusting any parameter, are in good agreement with experiments, thus validating the simulations. We then used the molecular transfer model to predict the changes in the ΔGs and Tfs as the guanidine hydrochloride concentration is varied. The predictions can be readily tested in experiments.
Related Concept Videos
Molecular Chaperones and Protein Folding
The...
Protein Folding
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
Effects of Temperature on Free Energy
Conservation of Protein Domains Over Different Proteins
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
Noncovalent Attractions in Biomolecules
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...

