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Label-free Single Molecule Detection Using Microtoroid Optical Resonators
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Structural Insights into TOR Signaling.

Lucas Tafur1, Jennifer Kefauver1, Robbie Loewith1,2

  • 1Department of Molecular Biology, University of Geneva, 30 quai Ernest-Ansermet, CH1211 Geneva, Switzerland.

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The Target of Rapamycin (TOR) pathway regulates cell growth and metabolism. Recent structural studies reveal its molecular mechanisms, offering potential for new disease therapies.

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Area of Science:

  • Molecular Biology
  • Cellular Biology
  • Biochemistry

Background:

  • The Target of Rapamycin (TOR) is a crucial serine/threonine kinase controlling cellular growth and metabolism.
  • TOR functions in two complexes, TORC1 and TORC2, vital for cellular homeostasis and environmental response.
  • Dysregulated TOR signaling is implicated in diseases like epilepsy and cancer.

Purpose of the Study:

  • To review recent structural findings of (m)TORC1 and (m)TORC2 complexes.
  • To discuss the revealed molecular biology of TOR signaling.
  • To explore therapeutic strategies targeting TOR pathways.

Main Methods:

  • Cryo-electron microscopy (cryo-EM) advancements.
  • Analysis of published structural data for (m)TORC1 and (m)TORC2 from yeast and mammals.
  • Literature review and synthesis of findings.

Main Results:

  • An abundance of new (m)TORC1 and (m)TORC2 structures has become available.
  • These structures illuminate the molecular mechanisms of TOR regulation and function.
  • Unexpected molecular insights into TOR signaling have been uncovered.

Conclusions:

  • Recent structural biology has significantly advanced our understanding of TOR complexes.
  • This knowledge provides a foundation for developing novel therapeutic interventions.
  • Targeting TOR signaling holds promise for treating various diseases.