Zero-mode waveguides for single-molecule analysis at high concentrations - PubMed (original) (raw)
. 2003 Jan 31;299(5607):682-6.
doi: 10.1126/science.1079700.
Affiliations
- PMID: 12560545
- DOI: 10.1126/science.1079700
Zero-mode waveguides for single-molecule analysis at high concentrations
M J Levene et al. Science. 2003.
Abstract
Optical approaches for observing the dynamics of single molecules have required pico- to nanomolar concentrations of fluorophore in order to isolate individual molecules. However, many biologically relevant processes occur at micromolar ligand concentrations, necessitating a reduction in the conventional observation volume by three orders of magnitude. We show that arrays of zero-mode waveguides consisting of subwavelength holes in a metal film provide a simple and highly parallel means for studying single-molecule dynamics at micromolar concentrations with microsecond temporal resolution. We present observations of DNA polymerase activity as an example of the effectiveness of zero-mode waveguides for performing single-molecule experiments at high concentrations.
Comment in
- Analytical chemistry. How to detect weak pairs.
Laurence TA, Weiss S. Laurence TA, et al. Science. 2003 Jan 31;299(5607):667-8. doi: 10.1126/science.1081025. Science. 2003. PMID: 12560536 No abstract available.
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