Using single-molecule biophysical studies in an ion channel, the protonation state of engineered basic amino acids was measured in real time, making it possible to calculate the pKas of the substituted residues and creating a unique, comprehensive dataset for theorists studying the effects of an electrostatic environment on integral membrane protein function.
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Akabas, M. Watching single protons bind. Nat Chem Biol 2, 128–130 (2006). https://doi.org/10.1038/nchembio0306-128
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DOI: https://doi.org/10.1038/nchembio0306-128