From Macro to Micro: Leap in Small Molecule Sensitivity

Author: Stuart Knowling, Ph.D | Last updated: December 2025

Resource Overview:

Discover the cutting-edge capabilities of biolayer interferometry (BLI) assays with the Octet® R8e, ideal for scientists focusing on small-molecule interactions. This document initially explores the sensitivity improvements that empower BLI assays to precisely measure kinetic interactions and affinity values of sulfonamide-based inhibitors targeting carbonic anhydrase II (CAII). Traditionally constrained by sensitivity limitations, BLI technology now showcases significant advancements, enabling precise detection of even subtle binding interactions.

The document then features a comparative analysis using sulfonamide compounds such as acetazolamide and furosemide, demonstrating how BLI assays with the Octet® R8e align closely with established SPR data. This validation emphasizes BLI's capability to deliver reliable kinetic and affinity results, essential for understanding structure-activity relationships in drug discovery.

 

Key Takeaways:

  • Enhanced Sensitivity: The Octet® R8e offers precise measurement of small-molecule interactions, overcoming traditional limitations.
  • SPR Validation: BLI assays with the Octet® R8e closely match established SPR data, ensuring reliable results.
  • Kinetic Insights: Provides real-time kinetic data crucial for understanding structure-activity relationships in drug discovery.

 

Resource Details:

  • Document type: Application Note
  • Page count: 7
  • Read time: 10 minutes

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