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Understanding Design Principles of the Photosystem II Supercomplex Using Ultrafast Spectroscopy and Theoretical Simulation
Understanding Design Principles of the Photosystem II Supercomplex Using Ultrafast Spectroscopy and Theoretical Simulation
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152123
- ISBN
- 9798384448235
- DDC
- 540
- 저자명
- Yang, Shiun-Jr.
- 서명/저자
- Understanding Design Principles of the Photosystem II Supercomplex Using Ultrafast Spectroscopy and Theoretical Simulation
- 발행사항
- [Sl] : University of California, Berkeley, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 159 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- 주기사항
- Advisor: Fleming, Graham R.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2024.
- 초록/해제
- 요약This dissertation focuses on understanding the ultrafast dynamics in photosystem II (PSII) and connecting the PSII dynamics with its functions to reveal its design principles. Specifically, we begin the study with the smallest subunit of PSII and gradually increase the size to the C2S2M2-type PSII supercomplex (PSII-SC). In Chapter 1, we discuss photosynthetic light-harvesting and how energy conversion efficiency needs to be balanced with photoprotection. We also briefly discuss the implications the structure of the PSII-SC has on the ultrafast dynamics and the experimental and theoretical methods-two-dimensional electronic-vibrational (2DEV) spectroscopy and energy transfer theories-used to study the ultrafast dynamics. In Chapter 2, we apply 2DEV spectroscopy on the smallest functional units of the PSII, the PSII reaction center and the PSII core complex. The improved resolution afforded by 2DEV spectroscopy allows detailed charge separation dynamics in the PSII reaction center to be revealed. The application of 2DEV spectroscopy on the PSII core complex shows how energy is transferred from the core antennae to the reaction center. In Chapter 3, we use both 2DEV spectroscopy and structure-based modeling to understand how energy flows in the C2S2-type PSII-SC. We show that energy can initially flow in both directions between the PSII core and the peripheral antenna system, which allows the PSII-SC to achieve a balance between efficient energy conversion and photoprotection. In Chapter 4, we extend the structure-based model to the C2S2M2-type PSII-SC and combine the model with kinetic Monte Carlo simulations. We perform first passage time and dwell time analyses on "computational mutants" to understand the functional roles of the subunits in the PSII-SC. We also construct a free energy landscape for the PSII-SC which allows us to discuss the mechanism of its kinetic network. The analyses allow us to connect the microscopic energy transfer dynamics in the PSII-SC to its macroscopic function. In the final chapter, we propose higher-order experiments and single-trajectory simulations to understand ultrafast dynamics in light-harvesting involved in different scales. We also propose methods to quantify entropy involved in the energy transfer dynamics, which is potentially a mechanism that facilitates the control of energy flow for balancing efficiency and photoprotection in the PSII-SC.
- 일반주제명
- Chemistry
- 일반주제명
- Physical chemistry
- 일반주제명
- Biophysics
- 일반주제명
- Quantum physics
- 키워드
- Light-harvesting
- 키워드
- Photosynthesis
- 키워드
- Photosystem II
- 키워드
- Quantum dynamics
- 기타저자
- University of California, Berkeley Chemistry
- 기본자료저록
- Dissertations Abstracts International. 86-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798384448235
■035 ▼a(MiAaPQ)AAI31482204
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aYang, Shiun-Jr.
■24510▼aUnderstanding Design Principles of the Photosystem II Supercomplex Using Ultrafast Spectroscopy and Theoretical Simulation
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a159 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Fleming, Graham R.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2024.
■520 ▼aThis dissertation focuses on understanding the ultrafast dynamics in photosystem II (PSII) and connecting the PSII dynamics with its functions to reveal its design principles. Specifically, we begin the study with the smallest subunit of PSII and gradually increase the size to the C2S2M2-type PSII supercomplex (PSII-SC). In Chapter 1, we discuss photosynthetic light-harvesting and how energy conversion efficiency needs to be balanced with photoprotection. We also briefly discuss the implications the structure of the PSII-SC has on the ultrafast dynamics and the experimental and theoretical methods-two-dimensional electronic-vibrational (2DEV) spectroscopy and energy transfer theories-used to study the ultrafast dynamics. In Chapter 2, we apply 2DEV spectroscopy on the smallest functional units of the PSII, the PSII reaction center and the PSII core complex. The improved resolution afforded by 2DEV spectroscopy allows detailed charge separation dynamics in the PSII reaction center to be revealed. The application of 2DEV spectroscopy on the PSII core complex shows how energy is transferred from the core antennae to the reaction center. In Chapter 3, we use both 2DEV spectroscopy and structure-based modeling to understand how energy flows in the C2S2-type PSII-SC. We show that energy can initially flow in both directions between the PSII core and the peripheral antenna system, which allows the PSII-SC to achieve a balance between efficient energy conversion and photoprotection. In Chapter 4, we extend the structure-based model to the C2S2M2-type PSII-SC and combine the model with kinetic Monte Carlo simulations. We perform first passage time and dwell time analyses on "computational mutants" to understand the functional roles of the subunits in the PSII-SC. We also construct a free energy landscape for the PSII-SC which allows us to discuss the mechanism of its kinetic network. The analyses allow us to connect the microscopic energy transfer dynamics in the PSII-SC to its macroscopic function. In the final chapter, we propose higher-order experiments and single-trajectory simulations to understand ultrafast dynamics in light-harvesting involved in different scales. We also propose methods to quantify entropy involved in the energy transfer dynamics, which is potentially a mechanism that facilitates the control of energy flow for balancing efficiency and photoprotection in the PSII-SC.
■590 ▼aSchool code: 0028.
■650 4▼aChemistry
■650 4▼aPhysical chemistry
■650 4▼aBiophysics
■650 4▼aQuantum physics
■653 ▼aLight-harvesting
■653 ▼aMultidimensional spectroscopy
■653 ▼aPhotosynthesis
■653 ▼aPhotosystem II
■653 ▼aQuantum dynamics
■653 ▼aUltrafast spectroscopy
■690 ▼a0485
■690 ▼a0494
■690 ▼a0786
■690 ▼a0599
■71020▼aUniversity of California, Berkeley▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g86-03B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163011▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
