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In vitro evolution of intrinsically bent DNA
In vitro evolution of intrinsically bent DNA.
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DNA fragments which are intrinsically bent or curved migrate anomalously during electrophoresis through polyacrylamide gels. Starting with an initial population of approximately 10(12) unique DNA sequences, DNA which exhibited the kind of anomalous mobility associated with DNA bending was selected and enriched using a variation of the SELEX procedure. After seven rounds of selection and amplification, the vast majority of the remaining population of DNA fragments migrated as bent DNA. Cloning and sequencing of 30 individual sequences from this population has yielded information regarding the relationship between DNA sequence and bending. Some of the previous conclusions on DNA bending have been confirmed while others have been modified, by the results presented here. In addition, the dinucleotide base step CA/TG, which had not been thought to be a major factor in DNA bending, appears to be important.
Beutel BA, Gold L
Journal of molecular biology
1992-12-05 00:00
228
3
803-12
Base Composition,Base Sequence,Cloning, Molecular,DNA,Electrophoresis, Polyacrylamide Gel,Evolution,Isomerism,Molecular Sequence Data,Nucleic Acid Conformation,Oligodeoxyribonucleotides,Polymerase Chain Reaction,Random Allocation,Oligodeoxyribonucleotides,DNA
Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder 80309-0347
J. Mol. Biol.
NIGMS GM14568
0022-2836
0022-2836(92)90865-H
408
True
1469714
