Tracking bacterial DNA replication forksin vivoby pulsed field gel electrophoresis
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چکیده
منابع مشابه
Pulsed-field gel electrophoresis of circular DNA.
Mobility of supercoiled (form I) and nicked circular (form II) plasmid DNAs was determined on two major forms of pulsed-field electrophoresis, CHEF and OFAGE. Plasmids with molecular lengths ranging from 2.30 to 17.8 kilobase pairs (kb) were used with Saccharomyces cerevisiae chromosomes as standards. Agarose gel concentrations were varied from 0.3 to 2.0 percent, with higher percentage gels re...
متن کاملPulsed-field gel electrophoresis.
DNA molecules in an agarose matrix elongate and migrate toward the anode when exposed to an electric field. An agarose matrix represents a highly irregular network with pores of various dimensions, large open areas, and regions with different densities. During electrophoresis, migration will be retarded by obstructions that prevent sieving by size and result in "end-on" migration as if through ...
متن کاملPulsed-field gel electrophoresis of very large DNA molecules.
FACTORS THAT AFFECT PFG SEPARATIONS........................................................................ 294 Molecular Properties ............................................... .................................... ............. 294 Pulse Times............................................................................................................... 295 Electrical Field Shape ..............
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FRED C. TENOVER,* ROBERT D. ARBEIT, RICHARD V. GOERING, PATRICIA A. MICKELSEN, BARBARA E. MURRAY, DAVID H. PERSING, AND BALA SWAMINATHAN National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333; Veterans Affairs Medical Center, Boston, Massachusetts 02130; Creighton University, Omaha, Nebraska 68178; Stanford University Medical Center, Stanford...
متن کاملPulsed homogeneous orthogonal field gel electrophoresis (PHOGE).
A versatile system (PHOGE) has been developed that allows resolution of molecules of DNA megabase pair size by the use of homogeneous, orthogonal, pulsed fields. The resulting electrophoretograms have characteristics that differ from those produced by other systems for pulsed field electrophoresis. Molecules in a two-fold range of sizes can be separated with maximum resolution, or a much larger...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 1989
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/17.9.3479