https://academic.oup.com/mbe/advance-article/doi/10.1093/molbev/msab059/6154586 (Preprint)
EXT760pr.pdf (Preprint), 2MB
O'Donnell, A. J., Huang, R., Barboline, J., & Barkman, T. J. (2021). Convergent biochemical pathways for xanthine alkaloid production in plants evolved from ancestral enzymes with different catalytic properties. Molecular Biology and Evolution.