@article {1340760, title = {Protein Charge Ladders, Capillary Electrophoresis, and the Role of Electrostatics in Biomolecular Recognition}, journal = {Accounts of Chemical Research}, volume = {31}, year = {1998}, note = {603}, pages = {343-350}, author = {Carbeck, J. D. and Colton, I. J. and Gao, J. and Whitesides, G. M.} }