Primary Processes in Fe-S-Type Photosynthetic Reactions Centers
Fe-S型光合反应中心的初级过程
基本信息
- 批准号:9727607
- 负责人:
- 金额:$ 33.55万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1998
- 资助国家:美国
- 起止时间:1998-01-01 至 2000-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
9727607 Blankenship The objective of this research is to extend the current understanding of the energy trapping processes, primary photochemistry and early secondary electron transfer reactions in photosynthetic reaction centers that contain FeS centers as early electron acceptors. The particular systems that will be studied include reaction centers from the primitive anoxygenic organisms known as heliobacteria as well as Photosystem I of oxygenic photosynthetic organisms. One of the overall goals of the work is to correlate some of the pigments observed in spectroscopic studies with pigments observed in the recent X-ray structure of Photosystem I. Specific proposed experiments include, picosecond transient absorbance measurements in the blue spectral region in Photosystem I, studies on Photosystem I mutants in the quinone-binding region and the P700 binding region, dichroism experiments on Photosystem I and investigation of secondary electron transfer reactions in heliobacteria monitored using EPR and picosecond timescale transient absorbance spectroscopy. These experiments will give new insights into the energy trapping process in reaction centers that contain integral core antenna pigments and will help to identify and characterize some of the early electron acceptors in these systems, including chlorophylls, quinones and FeS centers. The goal of this work is to understand how plants and other photosynthetic organisms convert the energy of sunlight into chemical energy. This project is designed to give detailed knowledge of the chemical mechanism of energy storage in a class of photosynthetic complexes that is not well understood. Advances in understanding the basic scientific principles at work in this essential biological process may ultimately lead to the development of artificial energy storage systems. The artificial systems may decrease our dependence on fossil fuels and reduce emission of pullutants and greenhouse gases. Another possible benefit is the use of this knowledg e in the development of improved plants that will help meet our food and fiber needs. ***
9727607布兰肯希普这项研究的目的是扩大目前对光合作用反应中心中能量捕获过程、初级光化学和早期次级电子转移反应的理解,这些反应中心包含FeS中心作为早期电子受体。将要研究的特殊系统包括原始无氧生物的反应中心,即已知的幽门杆菌,以及产氧光合作用生物的光系统I。这项工作的总体目标之一是将在光谱分析中观察到的一些色素与最近在光系统I的X射线结构中观察到的色素相关联。具体拟议的实验包括,在光系统I的蓝色光谱区域进行皮秒瞬时吸光度测量,在苯酚结合区和P700结合区研究光系统I突变体,对光系统I进行二色性实验,以及利用EPR和皮秒时间尺度瞬时吸收光谱研究幽门螺杆菌中的二次电子转移反应。这些实验将对含有完整核心天线颜料的反应中心的能量捕获过程提供新的见解,并将有助于识别和表征这些系统中的一些早期电子受体,包括叶绿素、苯二酚和FeS中心。这项工作的目标是了解植物和其他光合作用生物如何将阳光能量转化为化学能。这个项目的目的是提供关于一类光合作用复合体中能量储存的化学机制的详细知识,这类化合物还没有被很好地理解。在理解在这一基本生物过程中起作用的基本科学原理方面的进展可能最终导致人工能量存储系统的发展。人工系统可能会减少我们对化石燃料的依赖,减少污染物和温室气体的排放。另一个可能的好处是将这些知识用于开发有助于满足我们的食物和纤维需求的改良植物。***
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Robert Blankenship其他文献
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Bedside ultrasound aids in diagnosis of Endophthalmitis as sepsis source and facilitation of transfer for definitive management
- DOI:
10.1016/j.visj.2023.101621 - 发表时间:
2023-01-01 - 期刊:
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Painful Erection
- DOI:
10.1016/j.annemergmed.2007.11.029 - 发表时间:
2008-09-01 - 期刊:
- 影响因子:
- 作者:
Eric B. Tomich;Robert Blankenship - 通讯作者:
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Robert Blankenship的其他文献
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{{ truncateString('Robert Blankenship', 18)}}的其他基金
A New Class of Integral Membrane Oxidoreductases
一类新型整体膜氧化还原酶
- 批准号:
0646621 - 财政年份:2007
- 资助金额:
$ 33.55万 - 项目类别:
Continuing Grant
Microbial Genome Sequencing: Genome Sequences for Four Phototrophic Prokaryotes
微生物基因组测序:四种光养原核生物的基因组序列
- 批准号:
0713803 - 财政年份:2006
- 资助金额:
$ 33.55万 - 项目类别:
Standard Grant
Purchase of an Instrument for Ultrafast, Multidimensional Fluorescence Detection and Imaging
购买超快、多维荧光检测和成像仪器
- 批准号:
0541835 - 财政年份:2006
- 资助金额:
$ 33.55万 - 项目类别:
Standard Grant
Microbial Genome Sequencing: Genome Sequences for Four Phototrophic Prokaryotes
微生物基因组测序:四种光养原核生物的基因组序列
- 批准号:
0412824 - 财政年份:2004
- 资助金额:
$ 33.55万 - 项目类别:
Standard Grant
SGER: Novel Nitrogenase-like Proteins and the Evolution of the Nitrogen Cycle
SGER:新型固氮酶样蛋白和氮循环的演变
- 批准号:
0415283 - 财政年份:2004
- 资助金额:
$ 33.55万 - 项目类别:
Standard Grant
U.S.-Australia Joint Workshop on Artificial Photosynthesis; Sydney, Australia
美国-澳大利亚人工光合作用联合研讨会;
- 批准号:
0244566 - 财政年份:2003
- 资助金额:
$ 33.55万 - 项目类别:
Standard Grant
Primary Processes in Photosystem I
光系统 I 中的主要过程
- 批准号:
0091250 - 财政年份:2001
- 资助金额:
$ 33.55万 - 项目类别:
Continuing Grant
U.S.-Japan Joint Seminar: Molecular Organization of Photosynthetic Antennas
美日联合研讨会:光合天线的分子组织
- 批准号:
9603034 - 财政年份:1997
- 资助金额:
$ 33.55万 - 项目类别:
Standard Grant
Primary Processes in Fe-S-Type Photosynthetic Reaction Centers
Fe-S型光合反应中心的初级过程
- 批准号:
9418415 - 财政年份:1995
- 资助金额:
$ 33.55万 - 项目类别:
Continuing Grant
Primary Processes in Heliobacterial Reaction Center
幽门螺杆菌反应中心的初级流程
- 批准号:
9106685 - 财政年份:1991
- 资助金额:
$ 33.55万 - 项目类别:
Standard Grant
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