Avoiding accuracy-limiting pitfalls in the study of protein-ligand interactions with isothermal titration calorimetry

Sarah E. Boyce, Joel Tellinghuisen, and John D. Chodera.
Manuscript prior to submission. [bioRxiv] [PDF]
Supplementary files: ITC worksheet [PDF] [XLSX] [ODS]
doi:10.1101/023796

We show how to avoid common accuracy-limiting mistakes in isothermal titration calorimetry, and provide a simple spreadsheet to aid in propagating the dominant source of uncertainty (titrant concentration errors) into the resulting thermodynamic parameters.

Keywords: isothermal titration calorimetry; ITC; propagation of error; entropy-enthalpy compensation

Systematic errors in isothermal titration calorimetry: Concentrations and baselines

Joel T. Tellinghuisen and John D. Chodera.
Anal. Biochem. 414:297, 2011. [DOI] [PDF]

A word of caution about large errors in isothermal titration calorimetry measurements arising from ligand concentration errors.

Dynamical fingerprints: A theoretical framework for understanding biomolecular processes by combination of simulation and kinetic experiments

Frank Noé, Sören Doose, Isabella Daidone, Marc Löllmann, Markus Sauer, John D. Chodera, and Jeremy C. Smith.
Proc. Natl. Acad. Sci. USA 108:4822, 2011. [DOI] [PDF]

We present a new framework for comparing essential features of the dynamics between experiment and simulation to identify the kinetics processes contributing to individual relaxation timescales in perturbation-response or correlation spectroscopy experiments.