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 RNA Polymerase- [electronic resource]
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101921
- ISBN
- 9798380807425
- DDC
- 574.191
- 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
- Non-equilibrium
- 기타저자
- University of California, Los Angeles Chemistry 0153
- 기본자료저록
- Dissertations Abstracts International. 85-05B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.