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Related Concept Videos

DNA Topoisomerases02:02

DNA Topoisomerases

31.0K
Topoisomerases are enzymes that relax overwound DNA molecules during various cell processes, including DNA replication and transcription. These enzymes regulate positive and negative DNA supercoiling without changing the nucleotide sequence. DNA overwinding in a clockwise direction results in positively supercoiled DNA, whereas underwinding in a counterclockwise direction produces negatively supercoiled DNA.
Types and Mechanism of action
Topoisomerases are divided into two main types. ...
31.0K
DNA Helicases00:55

DNA Helicases

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DNA unwinding helicase enzymes are a type of motor protein. Motor proteins can translocate along filaments or polymers using energy generated from ATP hydrolysis. Helicases are involved in all the important cellular processes where DNA unwinding is required, such as DNA replication, repair, recombination, and transcription. They are present in all living organisms, but vary in their structure, function, and mechanism of action. For example, in prokaryotes, DnaB helicase binds and translocates...
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Lagging Strand Synthesis01:59

Lagging Strand Synthesis

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During replication, the complementary strands in double-stranded DNA are synthesized at different rates. Replication first begins on the leading strand. Replication starts later, occurs more slowly, and proceeds discontinuously on the lagging strand.
There are several major differences between synthesis of the leading strand and synthesis of the lagging strand. 1) Leading strand synthesis happens in the direction of replication fork opening, whereas lagging strand synthesis happens in the...
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Next-generation Sequencing03:00

Next-generation Sequencing

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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
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Advancing Topoisomerase Research Using DNA Nanotechnology.

Doron Yesodi1, Adi Katz1, Yossi Weizmann1,2,3

  • 1Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel.

Small Methods
|November 11, 2024
PubMed
Summary
This summary is machine-generated.

DNA nanotechnology offers advanced tools for studying topoisomerases, enzymes crucial for DNA topology and drug development. These methods enhance accuracy and understanding of enzyme activity for new drug discovery.

Keywords:
DNA nanotechnologyDNA topologydrug discoveryenzymatic assayshigh‐thruput screeningtopoisomerases

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Area of Science:

  • Biochemistry and Molecular Biology
  • Nanotechnology
  • Enzymology

Background:

  • Topoisomerases are essential enzymes regulating DNA topology in cells.
  • These enzymes are significant targets for anti-cancer and anti-bacterial drug development.
  • Traditional methods for studying topoisomerases have limitations in accuracy and scope.

Purpose of the Study:

  • To explore the application of DNA nanotechnology in studying topoisomerase enzymes.
  • To highlight advancements in DNA nanotechnology-based assays for enzyme activity.
  • To showcase the potential of DNA nanotechnology in drug discovery targeting topoisomerases.

Main Methods:

  • Review of historical and recent methods for topoisomerase research.
  • Emphasis on assays utilizing DNA nanotechnology.
  • Analysis of DNA nanotechnology's role in improving accuracy and understanding of enzyme function.

Main Results:

  • DNA nanotechnology provides enhanced accuracy in studying topoisomerase activity.
  • These methods offer expanded insights into enzyme mechanisms.
  • The utility of DNA nanotechnology in drug candidate exploration is demonstrated.

Conclusions:

  • DNA nanotechnology is a powerful and versatile tool for advancing the study of topoisomerases.
  • Innovations in DNA nanotechnology assays significantly improve the understanding of enzyme activity.
  • This approach holds great promise for the development of novel therapeutic agents targeting topoisomerases.