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Keywords:

  • glutathione S-transferase;
  • light-triggered chemical biology;
  • photoactivatable compounds;
  • photoactivation;
  • protein immobilization
Thumbnail image of graphical abstract

Caged glutathione is a new way to trigger protein interaction by light. Glutathione fulfills a universal role as redox factor, scavenger of reactive oxygen species, and as an essential substrate in the conjugation, detoxification, and reduction reactions catalyzed by glutathione S-transferase (GST). In their Communication on page 3960 ff., A. Heckel, R. Tampé and co-workers describe how GST fusion proteins could be assembled in situ at variable density by laser-scanning activation.