Electrophoretic mobility of λ phage HIND III and HAE III DNA fragments in agarose gels: A detailed study

Biopolymers ◽  
1987 ◽  
Vol 26 (5) ◽  
pp. 727-742 ◽  
Author(s):  
H. Hervet ◽  
C. P. Bean
Keyword(s):  
Electrophoretic Mobility ◽  
Dna Fragments ◽  
Agarose Gels

Efficient recovery of cloned human cytomegalovirus DNA fragments from agarose gels

1994 ◽  
Vol 46 (1) ◽  
pp. 1-10 ◽  
Author(s):  
A. Pramatarova ◽  
J. Yelle ◽  
B. D'Amours ◽  
Hamelin C.
Keyword(s):  
Human Cytomegalovirus ◽  
Dna Fragments ◽  
Agarose Gels ◽  
Efficient Recovery

scholarly journals Computer programs for accurate determination of size of DNA fragments in agarose gels.

1987 ◽  
Vol 40 (6) ◽  
pp. 692-695 ◽  
Author(s):  
J Ling ◽  
K L Ling ◽  
K W Chan ◽  
G L French
Keyword(s):  
Accurate Determination ◽  
Computer Programs ◽  
Dna Fragments ◽  
Agarose Gels

scholarly journals Restriction Endonuclease Analysis Discriminates Bordetella bronchiseptica Isolates

2000 ◽  
Vol 38 (12) ◽  
pp. 4387-4393 ◽  
Author(s):  
Randy E. Sacco ◽  
Karen B. Register ◽  
Gwen E. Nordholm
Keyword(s):  
Restriction Enzyme ◽  
Host Species ◽  
Restriction Endonuclease Analysis ◽  
Bordetella Bronchiseptica ◽  
Enzyme Analysis ◽  
Restriction Enzyme Analysis ◽  
Dna Fragments ◽  
Chromosomal Dna ◽  
Agarose Gels ◽  
Endonuclease Analysis

One hundred ninety-five Bordetella bronchisepticaisolates from 12 different host species worldwide were characterized by restriction enzyme analysis (REA). These isolates had previously been categorized into 19 PvuII ribotypes. Twenty restriction endonucleases were evaluated for use in REA. Digestion of chromosomal DNA with HinfI, followed by submarine electrophoresis in agarose gels and staining with ethidium bromide, produced DNA fragments in the 4.0- to 10-kb range, which readily discriminated B. bronchiseptica isolates, resulting in 48 fingerprint patterns. Moreover, AluI digestion of chromosomal DNA produced 39 distinct fingerprint profiles with DNA fragments ranging from 6.0 to 20.0 kb. While REA frequently provided more discriminatory power than ribotyping, there were examples where the use of ribotyping was more discriminatory than REA. Passage of selected isolates up to passage 25 did not change the REA profile. Moreover, the Bvg phase did not alter the fingerprint profile of chromosomal DNA from B. bronchiseptica strains digested with HinfI orAluI. Based on the results presented herein, the combination of REA and ribotyping should provide valuable information in understanding the molecular epidemiology of B. bronchiseptica infections.

Plasmid recombination intermediates generated in a Saccharomyces cerevisiae cell-free recombination system

1985 ◽  
Vol 5 (9) ◽  
pp. 2361-2368
Author(s):  
L S Symington ◽  
P Morrison ◽  
R Kolodner
Keyword(s):  
Electron Microscopy ◽  
Saccharomyces Cerevisiae ◽  
Electrophoretic Mobility ◽  
Electrophoretic Analysis ◽  
Individual Band ◽  
Agarose Gels ◽  
Cell Extracts ◽  
Recombination System ◽  
Plasmid Recombination

We have developed an assay utilizing Saccharomyces cerevisiae cell extracts to catalyze recombination in vitro between homologous plasmids containing different mutant alleles of the tet gene. Electrophoretic analysis of product DNA indicated that a number of novel DNA species were formed during the reaction. These species migrated through agarose gels as distinct bands with decreased electrophoretic mobility compared with the substrate DNA. The DNA from each individual band was purified and shown to be enriched 5- to 100-fold for tetracycline-resistant recombinants by using a transformation assay. The structure of the DNA molecules present in these bands was determined by electron microscopy. Recombination between circular substrates appeared to involve the formation and processing of figure-eight molecules, while recombination between circular and linear substrates involved the formation of molecules in which a circular monomer had a monomer-length linear tail attached at a region of homology.

scholarly journals Plasmid recombination intermediates generated in a Saccharomyces cerevisiae cell-free recombination system.

1985 ◽  
Vol 5 (9) ◽  
pp. 2361-2368 ◽  
Author(s):  
L S Symington ◽  
P Morrison ◽  
R Kolodner
Keyword(s):  
Electron Microscopy ◽  
Saccharomyces Cerevisiae ◽  
Electrophoretic Mobility ◽  
Electrophoretic Analysis ◽  
Individual Band ◽  
Agarose Gels ◽  
Cell Extracts ◽  
Recombination System ◽  
Plasmid Recombination

We have developed an assay utilizing Saccharomyces cerevisiae cell extracts to catalyze recombination in vitro between homologous plasmids containing different mutant alleles of the tet gene. Electrophoretic analysis of product DNA indicated that a number of novel DNA species were formed during the reaction. These species migrated through agarose gels as distinct bands with decreased electrophoretic mobility compared with the substrate DNA. The DNA from each individual band was purified and shown to be enriched 5- to 100-fold for tetracycline-resistant recombinants by using a transformation assay. The structure of the DNA molecules present in these bands was determined by electron microscopy. Recombination between circular substrates appeared to involve the formation and processing of figure-eight molecules, while recombination between circular and linear substrates involved the formation of molecules in which a circular monomer had a monomer-length linear tail attached at a region of homology.

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