Chinese scholars have revealed the optical co-operation of ancient photolysal bacteria

Xinhua News Agency, Hangzhou, November 20 (Reporter Zhu Han) Zhejiang University School of Medicine, Liangyu Laboratory and China
Plant Research Institute research team, analyzed the atomic space structure of the ancient photosynthel reaction center of green sulfur bacteria, revealed a unique pigment molecular spatial displacement and energy transfer mechanism, helped to understand the origin and evolution of photosynthma reaction center, for the design of photosensitive devices, improve plant light energy utilization. The study was published in the journal Science on November 20, 2020.
photochemical bacteria are ancient primary nuclear organisms that appeared on Earth 3.5 billion years ago, and they are still stubbornly alive after a long period of biological evolution and many devastating climate disasters to the biological community. Green sulfur bacteria are part of a family of photolysal bacteria that have unique photode co-technology systems that can be used in very low-light environments.
scientific research team optimized all aspects of sample preparation, obtained a stable and sufficient protein complex sample, through cryoentherapy technology, collected nearly 10,000 sample particles of electron microscope imaging images, and finally successfully analyzed the three-dimensional atomic structure of the green sulfur bacterial reaction center.
molecules at the center of the green sulfur bacterial response are divided into two layers, and there is a clear "gap" between the two layers of clergy. According to Zhang Xing, a professor at Yan Yifu Hospital and Liangyu Laboratory affiliated with Zhejiang University School of Medicine, in other photosynthelphalt reaction center structures that have been analyzed so far, there is a similar "gap" in the middle of which there is a leafy molecule acting as a bridge to promote the transmission of energy from the upper-level curing molecules to the lower-level currotin molecules, but there is no such bridge molecule inside the green sulfur bacterial reaction center.
reaction process for photo-cooperation is very complex, and the spatial structure of the reaction center is extremely complex. In Earth's billions of years of history, the origin of photohesing reaction centers has been produced only once, and all existing photohemolysing centers on Earth have evolved from the same ancestral protein through dispersion. Zhang Xing said the team's next step will be to try to obtain more data to reveal the molecular processes of energy transfer at the ancient reaction center. In the future, it is expected to transform the plant photolytic reaction system, improve the utilization rate of solar energy and improve crop yield by artificially simulating photochresmissive mechanism and bionic design photosensitive devices.