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Methods Development Toward Non-Equilibrium Studies of Transcription Initiation by E. coli RNA Polymerase- [electronic resource]
Methods Development Toward Non-Equilibrium Studies of Transcription Initiation by E. coli ...
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Methods Development Toward Non-Equilibrium Studies of Transcription Initiation by E. coli RNA Polymerase- [electronic resource]
자료유형  
 학위논문파일 국외
최종처리일시  
20240214101921
ISBN  
9798380807425
DDC  
574.191
저자명  
Segal, Maya Adital.
서명/저자  
Methods Development Toward Non-Equilibrium Studies of Transcription Initiation by E. coli RNA Polymerase - [electronic resource]
발행사항  
[S.l.]: : University of California, Los Angeles., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(177 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
주기사항  
Advisor: Weiss, Shimon.
학위논문주기  
Thesis (Ph.D.)--University of California, Los Angeles, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약single-molecule FRET (smFRET) is a powerful technique used for studying nanometer-scale dynamics of individual molecules. In solution-based smFRET, it is possible to investigate intra- and intermolecular conformations, binding and unbinding events, and conformational changes under biologically relevant conditions without ensemble averaging. However, traditional single-spot smFRET measurements in solution are inherently time-consuming.In this study, I present a high-throughput smFRET approach that overcomes the limitations of single-spot measurements. This method utilizes a multispot confocal geometry, where excitation spots are optically coupled to two custom silicon Single Photon Avalanche Diode (SPAD) arrays. By implementing Periodic Acceptor Excitation (PAX), two-color excitation is achieved, which allows differentiation between singly- and doubly-labeled molecules, in a process called molecular sorting. By pooling data from multiple confocal spots, I demonstrate the ability of this setup to rapidly identify molecular subpopulations and accurately determine their associated FRET efficiencies.Furthermore, this high-throughput approach enhances the temporal resolution of single molecule FRET population characterization from minutes to seconds. When combined with microfluidics, this methodology opens doors for real-time kinetic studies and efficient molecular screening applications.By employing this high-throughput smFRET technique, I aim to advance our understanding of single-molecule dynamics and facilitate a wide range of biophysical investigations in various fields.
일반주제명  
Biophysics.
일반주제명  
Chemistry.
일반주제명  
Physical chemistry.
키워드  
single-molecule FRET
키워드  
Periodic Acceptor Excitation
키워드  
Single Photon Avalanche Diode
키워드  
Non-equilibrium
기타저자  
University of California, Los Angeles Chemistry 0153
기본자료저록  
Dissertations Abstracts International. 85-05B.
기본자료저록  
Dissertation Abstract International
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