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Functionalised Cofactor Mimics for Interactome Discovery and Beyond.

Isabel V L Wilkinson1, Martin Pfanzelt1, Stephan A Sieber1

  • 1Centre for Functional Protein Assemblies, Technical University of Munich, Ernst-Otto-Fischer-Straße 8, 85748, Garching, Germany.

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Summary
This summary is machine-generated.

Cofactor mimics are crucial tools for understanding enzyme reactions and protein modifications. These functionalized molecules help identify cofactor binding partners and reveal new biological functions.

Keywords:
Chemical ProbesCofactorsPhotoaffinity LabellingProtein ModificationsProteomics

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Area of Science:

  • Biochemistry
  • Chemical Biology
  • Proteomics

Background:

  • Cofactors are essential for numerous enzyme reactions, yet their precise functions and interactions remain incompletely understood.
  • Decades of research have highlighted the importance of cofactors, but comprehensive characterization is still needed.

Purpose of the Study:

  • To explore the utility of functionalized cofactor mimics in elucidating cofactor roles and expanding enzymatic capabilities.
  • To investigate the application of chemical proteomics for mapping cofactor interactomes and localizations within physiological environments.
  • To leverage cofactor mimics for site-specific labeling of biomolecules and understanding post-translational modifications.

Main Methods:

  • Activity-based protein profiling (ABPP) and other chemical proteomics techniques were employed.
  • Design and synthesis of functionalized cofactor mimics.
  • Analysis of cofactor-protein interactions and cellular localization.

Main Results:

  • Identified previously uncharacterized proteins involved in cofactor-dependent pathways.
  • Deciphered the in vivo interactome and localization of native cofactors.
  • Demonstrated the use of mimics for site-specific labeling of substrate biomolecules.
  • Showcased the potential of cofactor mimics in developing inhibitors, therapeutics, and sensors.

Conclusions:

  • Functionalized cofactor mimics are powerful tools for advancing our understanding of enzyme catalysis and cofactor biology.
  • Chemical proteomics approaches combined with mimics enable comprehensive interactome mapping and annotation of novel proteins.
  • Cofactor mimics offer versatile applications, including therapeutic development and the creation of novel biocatalysts and biosensors.