https://henriquefernandes.pt/2017/06/14/the-catalytic-mechanism-of-the-pyridoxal-5%e2%80%b2-phosphate-dependent-enzyme-histidine-decarboxylase-a-computational-study/
The Catalytic Mechanism of the Pyridoxal-5′-phosphate-Dependent Enzyme, Histidine Decarboxylase: A Computational Study