How many named organic reactions do you think we can find in biological systems?

10-20,  20-30,  30-40,  or 40-50?

The answer can be found in this review in Angewandte¹.

1. C.-I. Lin, R.M. McCarty, and H.-w. Liu, Angew. Chem. Int. Ed., 2017, 56, 3446-3489.