Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 111, Issue 42, Pages 12294-12298Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp075239h
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In this Article, we study the development of semiconductor nanocrystals (quantum dots of average diameter less than 2 nm) directly conjugated to a transporter protein human serum albumin (HSA) as fluorescent biological labels. Forster resonance energy transfer (FRET) from the amino acid tryptophan (Trp214) to quantum dot in HSA is monitored to follow the local and global changes in the protein structure during thermal unfolding and refolding processes. This study is likely to attract widespread attention as a powerful tool for the study of protein folding.
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