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Strand asymmetries across genomic processes.

Camille Moeckel1, Apostolos Zaravinos2,3, Ilias Georgakopoulos-Soares1

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Genomic processes show directionality, leading to strand asymmetries that influence DNA composition and function. Studying these asymmetries reveals mechanisms of mutation, genome evolution, and disease, aiding in identifying functional genomic sites.

Keywords:
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Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • Genomic processes like transcription and replication exhibit directionality.
  • This directionality results in asymmetric distribution of nucleotides and functional elements across DNA strands.
  • Strand asymmetries, such as GC skews and mutational biases, impact organismal nucleotide composition.

Purpose of the Study:

  • To review key developments in understanding genomic strand asymmetries.
  • To explore the mechanisms underlying these asymmetries.
  • To highlight the role of strand asymmetries in genome function, evolution, and disease.

Main Methods:

  • Review of existing literature on genomic strand asymmetries.
  • Analysis of nucleotide composition and distribution across complementary DNA strands.
  • Investigation of correlations between strand asymmetries and biological processes.

Main Results:

  • Strand asymmetries are widespread across biological systems.
  • These asymmetries provide insights into DNA repair, transcription factor binding, and mutagenesis.
  • Detection and quantification of asymmetries aid in identifying functional genomic sites like origins of replication.

Conclusions:

  • Understanding genomic strand asymmetries is crucial for deciphering genome function and evolution.
  • These asymmetries have significant implications for human diseases, including cancer.
  • Further research into strand asymmetries will enhance knowledge of genome instability and mutagenesis.