Single-molecule detection of DNA hybridization
AUTOR(ES)
Singh-Zocchi, Mukta
FONTE
National Academy of Sciences
RESUMO
We demonstrate the detection of nanometer-scale conformational changes of single DNA oligomers through a micromechanical technique. The quantity monitored is the displacement of a micrometer-size bead tethered to a surface by the probe molecule undergoing the conformational change. This technique allows probing of conformational changes within distances beyond the range of fluorescence resonance energy transfer. We apply the method to detect single hybridization events of label-free target oligomers. Hybridization of the target is detected through the conformational change of the probe.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=164633Documentos Relacionados
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