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The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.

Probing Transcription Factor Dynamics at the Single-Molecule Level in a Living Cell

Open access
Elf, Johan, Li, Gene-Wei, Xie, X. Sunney·2007·Science

Abstract

Transcription factors regulate gene expression through their binding to DNA. In a living Escherichia coli cell, we directly observed specific binding of a lac repressor, labeled with a fluorescent protein, to a chromosomal lac operator. Using single-molecule detection techniques, we measured the kinetics of binding and dissociation of the repressor in response to metabolic signals. Furthermore, we characterized the nonspecific binding to DNA, one-dimensional (1D) diffusion along DNA segments, and 3D translocation among segments through cytoplasm at the single-molecule level. In searching for the operator, a lac repressor spends ∼90% of time nonspecifically bound to and diffusing along DNA with a residence time of <5 milliseconds. The methods and findings can be generalized to other nucleic acid binding proteins.

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Crossref · 10.1126/science.1141967

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Metadata

Authors
Elf, J., Li, G.-W., & Xie, X. S.
Venue
Science
Published
2007-05-25
Volume
316
Issue
5828
Pages
1191-1194
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2110823478
Cited by
1,084
References
28
FWCI
25.98
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Probing Transcription Factor Dynamics at the Single-Molecule Level in a Living Cell. https://app.cochat.ai/papers/10.1126/science.1141967
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Elf, J., Li, G.-W., & Xie, X. S. (2007). Probing Transcription Factor Dynamics at the Single-Molecule Level in a Living Cell. Science. https://doi.org/10.1126/science.1141967

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