Site-Specific Coupling Of Biomolecules Using Orthoquinones And Thiols

The inventors have developed an enzymatically catalyzed method for simple and rapid coupling of biomolecules to native amino acids on protein surfaces. This method is capable of attaching tyrosine or phenol containing molecules, peptides, or proteins to cystine or thiol containing targets at neutral pH with high yields. The inventors demonstrate the utility of this system by modifying Cas9 and other proteins with fluorophores, peptides, and whole proteins, such as green fluorescent proteins (GFPs) and antibody short chain variable fragments. This technology represents a novel paradigm in biomolecule coupling. Javed Afzal 510-643-7201

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