Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

The Antenna Complex01:15

The Antenna Complex

6.9K
Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
6.9K
The Z-Scheme of Electron Transport in Photosynthesis01:34

The Z-Scheme of Electron Transport in Photosynthesis

12.5K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
12.5K
The Photochemical Reaction Center01:29

The Photochemical Reaction Center

4.3K
Reaction centers are pigment-protein complexes that initiate energy conversion from photons to chemical entities. Therefore, photochemical reaction center is a more appropriate term that describes these complexes. The Nobel laureates Robert Emerson and William Arnold provided the first experimental evidence of photochemical reaction centers by demonstrating the participation of nearly 2,500 chlorophyll molecules for the release of just one molecule of oxygen. Despite thousands of photosynthetic...
4.3K
Electron Transport Chains01:28

Electron Transport Chains

85.2K
The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
The ETC is comprised of...
85.2K
Electron Transport Chain: Complex III and IV01:43

Electron Transport Chain: Complex III and IV

6.7K
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
6.7K
Photosystem II01:22

Photosystem II

59.7K
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across  two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
59.7K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Lessons, connections, hypotheses and predictions from protein film electrochemistry.

Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry·2026
Same author

Electron flow in hydrogenotrophic methanogens under nickel limitation.

Nature·2025
Same author

Introducing Bonnie Murphy, Ville Kaila, Maxie Roessler, Volha Chukhutsina, Alisia Fadini, Sonya Hanson, Filipe Maia, and Kirill Kovalev.

Structure (London, England : 1993)·2025
Same author

Extending protein-film electrochemistry across enzymology and biological inorganic chemistry to investigate, track and control the reactions of non-redox enzymes and spectroscopically silent metals.

Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry·2025
Same author

Conformational dynamics of a multienzyme complex in anaerobic carbon fixation.

Science (New York, N.Y.)·2025
Same author

Building Localized NADP(H) Recycling Circuits to Advance Enzyme Cascadetronics.

Angewandte Chemie (International ed. in English)·2025

相关实验视频

Updated: Apr 24, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

7.5K

作为太阳能转化催化剂的一种多菌酶.

Andreas Bachmeier1, Bonnie J Murphy, Fraser A Armstrong

  • 1Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford , South Parks Road, Oxford OX1 3QR, United Kingdom.

Journal of the American Chemical Society
|September 10, 2014
PubMed
概括
此摘要是机器生成的。

人工光合作用利用酶flavocytochrome c3 (fcc3) 将光能转化为糖酸盐,一种有价值的有机化学物质. 这个系统推进了太阳能驱动的合成,超越了简单的燃料.

更多相关视频

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light
07:08

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light

Published on: June 12, 2019

6.3K
Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
11:26

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Published on: September 12, 2014

12.1K

相关实验视频

Last Updated: Apr 24, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

7.5K
CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light
07:08

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light

Published on: June 12, 2019

6.3K
Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
11:26

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Published on: September 12, 2014

12.1K

科学领域:

  • 人工光合作用的人工光合作用
  • 生物有机化学 生物有机化学
  • 太阳能能量转换太阳能能量转换

背景情况:

  • 酶催化为化学合成提供可持续的途径.
  • 人工光合作用旨在模仿能源和化学生产的自然过程.
  • 黄细胞染色体c3 (fcc3) 是一种能够催化化反应的酶.

研究的目的:

  • 在太阳能驱动的酸盐生产中,利用fcc3在人工光合作用系统中.
  • 开发一种光电化学电池,用于高效的太阳能到化学转换.
  • 探索使用可再生能源合成有机化学品.

主要方法:

  • 将fcc3固定在染料敏感的TiO2纳米粒子上.
  • 使用修改过的电极 (氧化和BiVO4) 构建一个光电化学电池.
  • 用可见光照射水性悬浮液,用于酸盐生产.

主要成果:

  • 可见光驱动的酸盐生产成功地被固定 fcc3.3 催化.
  • 光电化学电池使用中性水作为氧化剂实现了太阳能到化学转换.
  • 证明了使用fcc3用于以太阳能驱动的有机商品合成的可行性.

结论:

  • 基于酶的人工光合作用是生产有价值的有机化学品的可行策略.
  • 这项工作为太阳能驱动的化学品和材料的合成开辟了新的途径.
  • 开发的系统超越了简单的燃料生产,转向复杂的有机合成.