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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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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 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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Area of Science:

  • Genomics and Bioinformatics
  • Infectious Disease Epidemiology
  • Public Health Surveillance

Background:

  • The past 15 years have seen transformative advancements in sequencing technologies, notably next-generation sequencing (NGS).
  • Dramatic decreases in sequencing costs and parallel increases in data generation have expanded the utility of these methods.
  • NGS applications are increasingly vital for infectious disease epidemiology and public health.

Purpose of the Study:

  • To review the principles, chemistry, and mechanics of conventional Sanger and NGS technologies.
  • To highlight the critical role of bioinformatics in analyzing and reporting large-scale sequence data.
  • To discuss the requirements for successful NGS deployment in public health settings.

Main Methods:

  • Review of current sequencing technologies, including Sanger and various NGS platforms.
  • Analysis of the impact of decreasing sequencing costs and increasing data complexity.
  • Discussion of bioinformatics, information technology, workforce, and regulatory considerations.

Main Results:

  • NGS technologies have become routine, generating vast amounts of sequence data.
  • Bioinformatics is essential for managing and interpreting this data.
  • NGS has had a revolutionary impact on infectious disease surveillance and outbreak investigations.

Conclusions:

  • Sustainable implementation of NGS in public health necessitates robust laboratory and bioinformatics capacity.
  • Addressing workforce, infrastructure, and funding is critical for routine NGS applications and future innovation.
  • NGS is indispensable for modern public health laboratory practice, enabling rapid response to infectious disease threats.