Electrochemical detection of protein glycosylation using lectin and protein-gold affinity interactions
Author(s)
Yadav, Sharda
Carrascosa, Laura G
Sina, Abu AI
Shiddiky, Muhammad JA
Hill, Michelle M
Trau, Matt
Year published
2016
Metadata
Show full item recordAbstract
We report a new method for the electrochemical detection of glycosylation on proteins, which relies on lectin–protein interaction on a bare gold electrode. The target protein isolated by immunoaffinity is directly adsorbed onto a gold surface and its glycosylation status is retrieved by subsequent addition of specific lectins. The adsorption and subsequent recognition process is monitored electrochemically in the presence of [Fe(CN)6]3−/4− redox system. By decoupling target protein capture from glycosylation read-out steps, this approach circumvents unwanted antibody–lectin crosstalk while enabling specific glycosylation ...
View more >We report a new method for the electrochemical detection of glycosylation on proteins, which relies on lectin–protein interaction on a bare gold electrode. The target protein isolated by immunoaffinity is directly adsorbed onto a gold surface and its glycosylation status is retrieved by subsequent addition of specific lectins. The adsorption and subsequent recognition process is monitored electrochemically in the presence of [Fe(CN)6]3−/4− redox system. By decoupling target protein capture from glycosylation read-out steps, this approach circumvents unwanted antibody–lectin crosstalk while enabling specific glycosylation detection of a glycoprotein in serum-spiked samples in less than 1 h.
View less >
View more >We report a new method for the electrochemical detection of glycosylation on proteins, which relies on lectin–protein interaction on a bare gold electrode. The target protein isolated by immunoaffinity is directly adsorbed onto a gold surface and its glycosylation status is retrieved by subsequent addition of specific lectins. The adsorption and subsequent recognition process is monitored electrochemically in the presence of [Fe(CN)6]3−/4− redox system. By decoupling target protein capture from glycosylation read-out steps, this approach circumvents unwanted antibody–lectin crosstalk while enabling specific glycosylation detection of a glycoprotein in serum-spiked samples in less than 1 h.
View less >
Journal Title
Analyst
Volume
141
Issue
8
Subject
Analytical chemistry
Analytical chemistry not elsewhere classified
Other chemical sciences