Finally, we point out that this is the first proposition and theoretical study of the resonant mixing DNP mechanism. The RM could be an ideal method to enhance MAS NMR to study biomolecules where high magnetic fields are essential for high resolution NMR, and where the microwave power is limited. Karabanov, et al. showed a strong effect with trityl compared to SE and more recently an enhancement of 110 has been observed for by Equbal, et al. , illustrating the potential. We believe that understanding the RM mechanism should provide a new path to improve DNP enhancements and expect advances in understanding this mechanism in the future.