The Fundamental Principle of KREX

  • The fundamental principle of our technology is that when the protein of interest is correctly folded, it co-translationally drives the correct folding of BCCP. Which then becomes biotinylated and allows the fusion protein to become attached to the surface.
  • On the other hand, when the protein of interest is grossly misfolded, it co-translationally drives misfolding of BCCP so it can no longer become biotinylated, preventing it from attaching to the surface. These proteins simply get washed away.

KREX Technology Overview

Krex Correctly Folded Proteins Technology | Sengenics | Protein Microarray Supplier

Surface Chemistry of KREX Protein Arrays

  • BCCP-tagged, biotinylated KREX proteins are immobilised onto a customised streptavidin-coated hydrogel surface
  • KREX proteins retain their folded structure and function as if they are present in an aqueous environment
  • Proteins behave as if they are in free solution


High-throughput autoantibody profiling against 1600+ proteins

Quantification of autoantibodies to 200+ clinically relevant CT antigens

Simultaneous screening of 100+
wild-type and mutant p53

Multi-antigen, multi-domain
COVID-19 antibody test

Sengenics - Functional Proteomics | Krex Technology | Protein Microarray Supplier

Sengenics is a Functional Proteomics company that leverages its patented KREX technology to discover autoantibody biomarker signatures for prediction of drug response and severe immune-related adverse events (irAEs). KREX can also be used to identify autoantibody biomarkers to diagnose cancer, autoimmune, neurodegenerative or infectious diseases with higher sensitivity and specificity than conventional diagnostic tests. Some autoantibodies that are identified as diagnostic biomarkers may be protective and have potential in themselves as therapeutic biomolecules.

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