Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The Forster resonance energy transfer (FRET)-based ATP aptasensors. (a) ATP-binding oligonucleotide labeled with red quantum dots (RQDs) and gold nanorods (AuNRs), which in the presence of ATP and berberine, folds into a G4 structure. FRET process results in the quenching of RQD fluorescence and an increase of berberine fluorescence is simultaneously observed. (b) Ag- and CD-labeled ATP-binding oligonucleotide system forming the G4 structure in the presence of ATP and berberine [119].
