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Title: Pulsed-field electrophoresis of megabase-sized DNA

Abstract

Success in constructing a physical map of the human genome will depend on two capabilities: rapid resolution of very large DNA and identification of migration anomalies. To address these issues, a systematic exploration of pulsed-field electrophoresis conditions for separating multimegabase-sized DNA was undertaken. Conditions were found for first liberating and then separating DNA up to 6 megabases at higher field strengths and more rapidly than previously reported. In addition, some conditions for transversely pulsed fields produced mobility inversion, in which increased size was accompanied by faster rather than slower migration. Importantly, anomalous migration could be identified by the presence of lateral band spreading, in which the DNA band remained sharply defined but spread laterally while moving down the gel. These results have implications for both practical applications and theoretical models of pulsed-field electrophoresis.

Authors:
;  [1]
  1. Department of Medicine, Stanford University Medical Center, CA (USA)
Publication Date:
OSTI Identifier:
5398279
Resource Type:
Journal Article
Journal Name:
Molecular and Cellular Biology; (United States)
Additional Journal Information:
Journal Volume: 11:6; Journal ID: ISSN 0270-7306
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; DNA; ELECTROPHORESIS; GENETIC MAPPING; DNA HYBRIDIZATION; ESCHERICHIA COLI; MOLECULAR WEIGHT; PLASMIDS; SACCHAROMYCES CEREVISIAE; BACTERIA; CELL CONSTITUENTS; EUMYCOTA; FUNGI; HYBRIDIZATION; MAPPING; MICROORGANISMS; NUCLEIC ACIDS; ORGANIC COMPOUNDS; PLANTS; SACCHAROMYCES; YEASTS; 550400* - Genetics

Citation Formats

Gunderson, K, and Chu, G. Pulsed-field electrophoresis of megabase-sized DNA. United States: N. p., 1991. Web. doi:10.1128/MCB.11.6.3348.
Gunderson, K, & Chu, G. Pulsed-field electrophoresis of megabase-sized DNA. United States. https://doi.org/10.1128/MCB.11.6.3348
Gunderson, K, and Chu, G. 1991. "Pulsed-field electrophoresis of megabase-sized DNA". United States. https://doi.org/10.1128/MCB.11.6.3348.
@article{osti_5398279,
title = {Pulsed-field electrophoresis of megabase-sized DNA},
author = {Gunderson, K and Chu, G},
abstractNote = {Success in constructing a physical map of the human genome will depend on two capabilities: rapid resolution of very large DNA and identification of migration anomalies. To address these issues, a systematic exploration of pulsed-field electrophoresis conditions for separating multimegabase-sized DNA was undertaken. Conditions were found for first liberating and then separating DNA up to 6 megabases at higher field strengths and more rapidly than previously reported. In addition, some conditions for transversely pulsed fields produced mobility inversion, in which increased size was accompanied by faster rather than slower migration. Importantly, anomalous migration could be identified by the presence of lateral band spreading, in which the DNA band remained sharply defined but spread laterally while moving down the gel. These results have implications for both practical applications and theoretical models of pulsed-field electrophoresis.},
doi = {10.1128/MCB.11.6.3348},
url = {https://www.osti.gov/biblio/5398279}, journal = {Molecular and Cellular Biology; (United States)},
issn = {0270-7306},
number = ,
volume = 11:6,
place = {United States},
year = {Sat Jun 01 00:00:00 EDT 1991},
month = {Sat Jun 01 00:00:00 EDT 1991}
}