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Related Concept Videos

Nucleic Acids02:43

Nucleic Acids

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
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The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
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Nucleic acids02:43

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
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Nucleic Acids02:43

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Nucleic Acid Structure01:25

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The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
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Nucleic Acids and Nucleotides01:20

Nucleic Acids and Nucleotides

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and have instructions for its functioning. The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
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Biosynthesis of Nucleic Acids01:28

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Nucleic acid biosynthesis is a fundamental biochemical process that produces the purine and pyrimidine nucleotides essential for DNA and RNA synthesis. This pathway maintains a balanced nucleotide pool, preventing imbalances that could jeopardize genetic integrity and cellular function. Given the crucial role of nucleotides, their synthesis is tightly regulated to ensure proper cellular homeostasis.Purine BiosynthesisThe biosynthesis of purine nucleotides begins with ribose-5-phosphate, a...
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Kinetic Screening of Nuclease Activity using Nucleic Acid Probes
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Kinetic Screening of Nuclease Activity using Nucleic Acid Probes

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Using Electropolymerization-based Doping for the Electro-addressable Functionalization of a Multi-electrode Array

Mustafa Sen1,2

  • 1Biomedical Engineering Department, Izmir Katip Celebi University.

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
|January 29, 2019
PubMed
Summary
This summary is machine-generated.

This study presents a new method for functionalizing carbon fiber electrodes (CFEs) for detecting nucleic acids. This technique enables the development of advanced micro/nano biosensors for simultaneous detection of multiple miRNA molecules.

Keywords:
Carbon fiber electrodebiosensorelectro-addressable functionalizationelectrode arraymiR34amiRNA

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Area of Science:

  • Electrochemistry
  • Nanotechnology
  • Biochemistry

Background:

  • Electrochemical detection offers high electrode density but limited multiplexing capabilities compared to other analytic techniques.
  • Developing methods for simultaneous detection of multiple analytes is crucial for advanced biosensing.

Purpose of the Study:

  • To develop a facile method for electro-addressable functionalization of a three-electrode array for nucleic acid detection.
  • To demonstrate the potential for creating multiplex nucleic acid micro/nano biosensors.

Main Methods:

  • Fabrication of a probe with three adjacent, individually addressable carbon fiber electrodes (CFEs) using a glass capillary pulling method.
  • Electro-addressable functionalization of the CFEs via electropolymerization of pyrrole.
  • Demonstration using anti-miR-34a electrografting on one CFE, polypyrrole coating on a second, and leaving the third unmodified.

Main Results:

  • Successful electro-addressable functionalization of individual CFEs within a closely spaced array.
  • Demonstrated selective grafting of anti-miR-34a on a specific electrode.
  • The fabricated probe shows promise for multiplexed miRNA detection.

Conclusions:

  • The developed strategy is effective for creating multiplex nucleic acid biosensors.
  • This method holds significant potential for local and in situ detection of multiple nucleic acid molecules, such as miRNAs.