Streamlined Data Processing for Determination of Equilibrium Dissociation Constants with Accurate Constant via...

Area of Science:

• Biochemistry and Biophysics
• Analytical Chemistry
• Chemical Engineering

Background:

• Accurate determination of equilibrium dissociation constants (Kd) for protein-small molecule complexes is essential for drug discovery and biological research.
• Existing methods for Kd determination often suffer from inaccuracies, limiting their reliability and widespread adoption.
• The Accurate Constant via Transient Incomplete Separation (ACTIS) method offers a promising approach for Kd determination using a simple fluidic system.

Purpose of the Study:

• To address the cumbersome and error-prone data processing associated with the ACTIS method.
• To introduce a streamlined, open-source software workflow (prACTISed) for efficient and accurate ACTIS data analysis.
• To enhance the practicality and accessibility of ACTIS as a reference method for Kd determination.

Main Methods:

• Development of a set of open-source software tools named prACTISed.
• Implementation of a streamlined data processing workflow for ACTIS data.
• Utilizing transient incomplete separation in a pressure-driven capillary flow system for Kd determination.

Main Results:

• The prACTISed software enables fast and straightforward processing of ACTIS data.
• The streamlined workflow minimizes human errors and reduces processing time.
• The software complements the simple ACTIS instrumentation, making the method more user-friendly.

Conclusions:

• The prACTISed software significantly improves the practicality of the ACTIS method for Kd determination.
• This open-source solution facilitates wider adoption and application of ACTIS in research and development.
• ACTIS, with the prACTISed workflow, is poised to become a practical reference method for quantifying protein-small molecule interactions.