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Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing
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Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing

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DNA structures associated with autonomously replicating sequences from plants.

T T Eckdahl1, J L Bennetzen, J N Anderson

  • 1Department of Biological Sciences, Purdue University, 47907, West Lafayette, IN, USA.

Plant Molecular Biology
|November 26, 2013
PubMed
Summary
This summary is machine-generated.

Autonomously replicating sequences (ARSs) from plants share structural and sequence similarities with yeast ARSs. These DNA elements feature bent DNA structures and a conserved 11 bp ARS consensus sequence.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Plasmids require specific DNA sequences for autonomous replication in host organisms.
  • Autonomously replicating sequences (ARSs) are crucial for plasmid stability and propagation in yeast.
  • Understanding ARS elements is key to genetic engineering and molecular biology applications.

Purpose of the Study:

  • To isolate and characterize ARS elements from plant genomes and the Ti plasmid.
  • To investigate the DNA structural and sequence features of these ARSs.
  • To compare plant-derived ARSs with those found in yeast and other organisms.

Main Methods:

  • Isolation of DNA fragments conferring autonomous replication.
  • Polyacrylamide gel electrophoresis to assess DNA structure (DNA bending).
  • Computer analysis to identify sequence-dependent DNA structures and consensus sequences.

Main Results:

  • ARS elements were isolated from four plant genomes and the Ti plasmid.
  • Bent DNA structures were found to be associated with ARS elements.
  • An 11 bp ARS consensus sequence was identified, flanked by A+T-rich regions.

Conclusions:

  • Plant ARS elements share common structural and sequence features with yeast ARSs.
  • The identified ARS consensus sequence is essential for ARS function.
  • These findings advance our understanding of DNA replication origins across different species.