26–31 May 2024
Western University
America/Toronto timezone
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(G*) (POS-41) Bringing light to force-driven events of single molecules

28 May 2024, 18:25
2m
PAB Hallways (Western University)

PAB Hallways

Western University

Poster Competition (Graduate Student) / Compétition affiches (Étudiant(e) 2e ou 3e cycle) Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB) DPMB Poster Session & Student Poster Competition (28) | Session d'affiches DPMB et concours d'affiches étudiantes (28)

Speaker

Luis Ramirez

Description

Biopolymers such as collagen and DNA play a fundamental role in cell dynamics, and many physiological functions rely on events that modify their structures. Understanding how mechanical force affects biopolymer structure and function at the molecular level could help elucidate how cellular and extracellular processes are regulated by external stimuli. Furthermore, single-molecule studies can provide mechanistic insight that is relevant at higher-order scales.
In this project, we are merging single-molecule imaging with mechanical manipulation by integrating Total Internal Reflection Fluorescence (TIRF) microscopy and Magnetic Tweezers (MT) to reveal how force and temperature drive mechanisms such as binding of regulatory proteins to biopolymers. Obtaining accurate data on the force exerted by MT is essential for the comprehensive characterization of polymer behavior and its interactions with other molecules. Therefore, the development of a tailored methodology adapted specifically to our experimental goals is crucial. My role in this project includes the configuration of the MT instrument and the refinement of data collection techniques to suit the requirements of our experiments.
The analysis of these single molecule measurements could elucidate mechanisms of regulatory protein binding events to collagen and DNA’s response to force and temperature. In addition, the establishment of these experiments generates a foundation for studies on many other biomolecular systems.

Keyword-1 Magnetic Tweezers
Keyword-2 Polymers

Author

Luis Ramirez

Co-authors

Ms Janine Srocka (Simon Fraser University) Nancy Forde

Presentation materials

There are no materials yet.