The anomer exchange rates k α and k β are the other main kinetic parameters involved in the reaction pathway under study. These were also accessed by our experimental protocol that allowed us to obtain estimates of k α and k β . We thus obtained k α = 0.042 ± 0.017 s -1 and k β = 0.029 ± 0.012 s -1 . These are in good agreement with the values given in ref. , k α = 0.0658 ± 0.0116 s -1 and k β = 0.0389 ± 0.0259 s -1 , that were obtained at 298 K based on conventional biochemical methods using UV spectroscopy.