scholarly journals Heteroduplex analysis

2019 ◽  
Author(s):  
Keyword(s):  
Heteroduplex Analysis

Improving sensitivity of electrophoretic heteroduplex analysis using nucleosides as additives: Application to the breast cancer predisposition geneBRCA2

2006 ◽  
Vol 27 (8) ◽  
pp. 1444-1452 ◽  
Author(s):  
Jérémie Weber ◽  
Rachelle Looten ◽  
Claude Houdayer ◽  
Dominique Stoppa-Lyonnet ◽  
Jean-Louis Viovy
Keyword(s):  
Breast Cancer ◽  
Cancer Predisposition ◽  
Heteroduplex Analysis ◽  
Breast Cancer Predisposition

Heteroduplex analysis of regulatory mutations and of insertions (IS1, IS2, IS5) in the bipolar argECBH operon of Escherichia coli

1978 ◽  
Vol 161 (2) ◽  
pp. 175-184 ◽  
Author(s):  
D. Charlier ◽  
M. Crabeel ◽  
S. Palchaudhuri ◽  
R. Cunin ◽  
A. Boyen ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Heteroduplex Analysis ◽  
Regulatory Mutations

Electron microscopic heteroduplex mapping identifies regions of the engrailed locus that are conserved between Drosophila melanogaster and Drosophila virilis

1985 ◽  
Vol 5 (12) ◽  
pp. 3600-3609
Author(s):  
J A Kassis ◽  
M L Wong ◽  
P H O'Farrell
Keyword(s):  
Genomic Library ◽  
Divergence Time ◽  
Normal Function ◽  
Drosophila Virilis ◽  
Heteroduplex Analysis ◽  
Evolutionary Divergence ◽  
Electron Microscopic ◽  
Primary Transcript ◽  
Functional Regions ◽  
Selection For

Physical localization of mutations in the engrailed (en) gene suggested that at least 70 kilobases (kb) of genomic sequences contribute to the normal function of this gene. Molecular characterization has suggested that en function is encoded in a small, 4.5-kb primary transcript. To identify functional regions within the 70 kb of the en locus of D. melanogaster, we identified sequences conserved in the D. virilis genome (estimated divergence time, 60 million years). Based on homology to D. melanogaster, we isolated en DNA from a D. virilis genomic library. Electron microscopic heteroduplex analysis indicated that in 70 kb there is 20 kb of conserved DNA in 33 different regions dispersed throughout the en locus, including two which encode parts of the major embryonic transcript. The conserved regions are in the same linear order and are spaced by similar lengths of nonconserved sequences in the D. virilis and D. melanogaster DNAs. What functional constraints have enforced conservation of sequences throughout the entire 70 kb and protected the region from divergence of size and arrangement? Our working hypothesis is that sequences necessary for the complex spatial and temporal pattern of en expression are dispersed throughout the 70-kb en locus and that selection for proper regulation restricts evolutionary divergence.

Sign in / Sign up

Export Citation Format

Share Document