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Separation of Large DNA Molecules by Contour-Clamped Homogeneous Electric Fields

Chu, Gilbert, Vollrath, Douglas, Davis, Ronald W.·1986·Science

Abstract

Electric fields can be manipulated by a method in which multiple electrodes are arranged along a closed contour and clamped to predetermined electric potentials. This method may be applied to a broad range of problems in the separation of macromolecules by gel electrophoresis. DNA molecules as large as 2 megabases can be well separated with a contour-clamped homogeneous electric field alternating between two orientations 120° apart. The pattern of separation is independent of position in the gel, which is an advantage over previous methods. DNA less than 50 kilobases can be separated without distortion even at high voltage with a nonalternating contour-clamped homogeneous field. Decreased band broadening in DNA less than 200 bases can be achieved with a contour-clamped inhomogeneous field.

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Metadata

Authors
Chu, G., Vollrath, D., & Davis, R. W.
Venue
Science
Published
1986-12-19
Volume
234
Issue
4783
Pages
1582-1585
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1975749117
Cited by
1,503
References
0
FWCI
117.25
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Separation of Large DNA Molecules by Contour-Clamped Homogeneous Electric Fields. https://app.cochat.ai/papers/10.1126/science.3538420
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Chu, G., Vollrath, D., & Davis, R. W. (1986). Separation of Large DNA Molecules by Contour-Clamped Homogeneous Electric Fields. Science. https://doi.org/10.1126/science.3538420

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.