A compound according to Formula I or II:
wherein R1, R1b, R2, L1, and L2 and L2b are as defined in the specification, pharmaceutical compositions thereof, and methods of use thereof.
Provided herein are modified cleavases for removing amino acids from peptides, polypeptides, and proteins. Also provided are methods of using the modified cleavases for treating polypeptides, and kits comprising the modified cleavase. In some embodiments, the methods and the kits also include other components for macromolecule sequencing and/or analysis.