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Peptidoglycan Synthesis01:28

Peptidoglycan Synthesis

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Structure of PeptidoglycanPeptidoglycan is a vital structural component of the bacterial cell wall, providing mechanical strength and shape to the cell. It consists of repeating units of two sugars—N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)—linked by β-1,4 glycosidic bonds. These sugar chains are cross-linked by short peptide chains, forming a mesh-like polymer that surrounds the bacterial plasma membrane.Cytoplasmic Phase – Precursor SynthesisPeptidoglycan...
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Biological macromolecules are organic compounds, predominantly composed of carbon atoms. The carbon atoms are covalently bonded with hydrogen, oxygen, nitrogen, and other minor elements. There are four major biological macromolecule classes: carbohydrates, lipids, proteins, and nucleic acids.
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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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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 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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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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Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures
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Peptide Nucleic Acids: Recent Developments in the Synthesis and Backbone Modifications.

Gurpreet Singh1, Vikramdeep Monga2

  • 1Department of Pharmaceutical Chemistry, ISF College of Pharmacy, GT Road, Ghal Kalan, Moga 142001, Punjab, India.

Bioorganic Chemistry
|September 25, 2023
PubMed
Summary
This summary is machine-generated.

Peptide nucleic acids (PNAs) are synthetic mimics of DNA and RNA with high affinity for targets. This review explores backbone modifications to enhance PNA stability and selectivity for therapeutic applications.

Keywords:
Backbone modificationDNADiagnosticPNA/DNA duplexPNAsPeptide nucleic acidsPeptide synthesisProbes

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Development of a Backbone Cyclic Peptide Library as Potential Antiparasitic Therapeutics Using Microwave Irradiation
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Area of Science:

  • Biochemistry
  • Medicinal Chemistry
  • Molecular Biology

Background:

  • Nucleic acids are ideal drug candidates for challenging protein targets.
  • Peptide nucleic acids (PNAs) are synthetic nucleic acid mimics with a peptide backbone.
  • PNAs offer potential in biotechnology, diagnostics, and therapeutics.

Purpose of the Study:

  • To review strategies for modifying the PNA backbone.
  • To enhance target selectivity and in vivo stability of PNAs.
  • To summarize the biological activities of PNAs.

Main Methods:

  • Review of literature on PNA synthesis and modification.
  • Analysis of strategies for backbone alteration.
  • Compilation of studies on PNA biological activities.

Main Results:

  • PNA backbone modifications improve target selectivity and stability.
  • PNAs exhibit high affinity and specificity due to their uncharged, flexible polyamide backbone.
  • Various biological activities of PNAs have been investigated.

Conclusions:

  • Backbone modification is key to optimizing PNA therapeutic potential.
  • PNAs represent a promising class of synthetic molecules for drug development.
  • Further research into PNA biological activities is warranted.