Cellular structural biology methods are
needed to characterize biological processes at atomic
resolution in the physiological environment of the cell.
Toward this goal, solution in-cell NMR is a powerful approach
because it provides structural and dynamic data on macromolecules
inside living cells. Several approaches have been
developed for in-cell NMR in cultured human cells, which are
needed to study processes related to human diseases that rely
on the delivery of exogenous macromolecules to the cells. Such
strategies, however, may not be applicable to proteins that are sensitive to the external environment or prone to aggregate and can introduce artifacts during protein purification or delivery.