Bifunctional Substrate Activation via an Arginine Residue Drives Catalysis in Chalcone Isomerases
J. R. Burke, J. J. LaClair, R. N. Philippe, A. Pabis, J. M. Jez, G. A. Cortina, M. Kaltenbach, M. E. Bowman, G. V. Louie, K. B. Woods, A. T. Nelson, D. S. Tawfik, S. C. L. Kamerlin, J. P. Noel
The paper elucidates the catalytic mechanism of chalcone isomerases, showing how an arginine residue activates substrates via Bronsted and Lewis acid interactions, and highlights structural differences between type-1 and type-2 enzymes.
bioRxiv · Oct 30, 2018Biochemistry