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Solving the Telomere Replication Problem.

Laetitia Maestroni1, Samah Matmati2, Stéphane Coulon3

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Summary

Telomere replication poses challenges to chromosome end integrity. This review explores how shelterin and the replisome maintain telomere stability against replication obstacles.

Keywords:
G‐quadruplexTERRATelomereTelomere replicationT‐loop

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Area of Science:

  • Genetics
  • Molecular Biology
  • Cell Biology

Background:

  • Telomeres are crucial nucleoprotein structures protecting linear chromosome ends.
  • Replication fork progression faces significant obstacles at chromosome extremities, termed the telomere replication problem.

Purpose of the Study:

  • To review novel aspects of telomere replication that impact telomere integrity.
  • To highlight the roles of shelterin and the replisome in preserving telomere integrity.

Main Methods:

  • Literature review of current research on telomere replication.
  • Analysis of the functions of key protein complexes involved in telomere maintenance.

Main Results:

  • Identified new challenges to telomere replication and integrity.
  • Detailed the essential functions of shelterin and the replisome in overcoming these challenges.

Conclusions:

  • Shelterin and the replisome are critical for maintaining telomere integrity during replication.
  • Understanding these mechanisms is vital for addressing genomic instability.