We use single molecule spectroscopy to study a multicomponent, competitive protein adsorption system. Fluorescently-labeled α-lactalbumin proteins are super-resolved adsorbing to cationic anion-exchange ligands in the presence of a competitor, insulin. We find that the competitor reduces the number of binding events by blocking ligands throughout the observed measurement time while the single-site adsorption kinetics are unchanged.
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| http://dx.doi.org/10.1039/c7an00701a | DOI Listing |
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