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Related Concept Videos

Nucleic Acid Structure01:25

Nucleic Acid Structure

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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 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

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.
DNA and RNA
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

Nucleic Acids

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Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

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Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
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Phosphodiester Linkages01:01

Phosphodiester Linkages

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Overview
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
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Chemical Triphosphorylation of Oligonucleotides
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Poly(oligonucleotide).

Carrie R James1, Anthony M Rush, Thomas Insley

  • 1Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093, United States.

Journal of the American Chemical Society
|August 1, 2014
PubMed
Summary
This summary is machine-generated.

Researchers created novel nucleic acid polymers using graft-through polymerization. These poly(peptide nucleic acid) (PNA) materials can form nanoparticles and hybridize with DNA, advancing biomaterial development.

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Area of Science:

  • Polymer Chemistry
  • Biomaterials Science
  • Nucleic Acid Chemistry

Background:

  • Nucleic acid-based polymers offer unique properties for advanced applications.
  • Developing efficient polymerization methods for nucleic acid monomers is crucial.
  • Peptide nucleic acids (PNAs) are DNA mimics with potential in diagnostics and therapeutics.

Purpose of the Study:

  • To synthesize poly(oligonucleotide) brush polymers and amphiphilic brush copolymers.
  • To explore the formation of poly-PNA nanoparticles.
  • To investigate the hybridization capabilities of these PNA nanostructures with DNA.

Main Methods:

  • Graft-through polymerization of nucleic acid monomers.
  • Ring-opening metathesis polymerization (ROMP) of PNA-norbornyl monomers using a ruthenium-based initiator.
  • Self-assembly of amphiphilic block copolymers into nanoparticles.
  • Hybridization assays with single-stranded DNA (ssDNA).

Main Results:

  • Successful preparation of poly(oligonucleotide) brush polymers and amphiphilic brush copolymers.
  • Synthesis of poly-PNA via ROMP.
  • Formation of poly-PNA nanoparticles from amphiphilic block copolymers.
  • Demonstrated hybridization of poly-PNA nanoparticles with complementary ssDNA.

Conclusions:

  • Poly(oligonucleotide) brush polymers and copolymers can be synthesized efficiently.
  • PNA-based nanoparticles can be formed and exhibit specific DNA binding.
  • This work provides a foundation for PNA-based nanostructures in molecular recognition and diagnostics.