A Reagentless Biosensing Assembly Based on Quantum Dot–Donor Förster Resonance Energy Transfer
Abstract
On the surface of a quantum dot (QD), maltose-binding protein (MBP, white and yellow in Figure) labeled with a cyanine dye (red) self-assembles, resulting in F?rster resonance energy transfer between the acceptor dye and the QD donor. Upon binding maltose, MBP undergoes a conformational change (white ⇌ yellow), causing concentration-dependent photoluminescence changes.
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