{"title":"进化过程中不同光合作用反应中心的多种瞬态手性动力学特征","authors":"Yonglei Yang, Zihui Liu, Fulu Zheng, Panpan Zhang, Hongxing He, Ajay Jha, Hong-Guang Duan","doi":"arxiv-2409.06996","DOIUrl":null,"url":null,"abstract":"The evolution of photosynthetic reaction centers (RCs) from anoxygenic\nbacteria to oxygenic cyanobacteria and plants reflects their structural and\nfunctional adaptation to environmental conditions. Chirality plays a\nsignificant role in influencing the arrangement and function of key molecules\nin these RCs. This study investigates chirality-related energy transfer in two\ndistinct RCs: Thermochromatium tepidum (BRC) and Thermosynechococcus vulcanus\n(PSII RC) using two-dimensional electronic spectroscopy (2DES). Circularly\npolarized laser pulses reveal transient chiral dynamics, with 2DCD spectroscopy\nhighlighting chiral contributions. BRC displays more complex chiral behavior,\nwhile PSII RC shows faster coherence decay, possibly as an adaptation to\noxidative stress. Comparing the chiral dynamics of BRC and PSII RC provides\ninsights into photosynthetic protein evolution and function.","PeriodicalId":501304,"journal":{"name":"arXiv - PHYS - Chemical Physics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Diverse Transient Chiral Dynamics in Evolutionary distinct Photosynthetic Reaction Centers\",\"authors\":\"Yonglei Yang, Zihui Liu, Fulu Zheng, Panpan Zhang, Hongxing He, Ajay Jha, Hong-Guang Duan\",\"doi\":\"arxiv-2409.06996\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The evolution of photosynthetic reaction centers (RCs) from anoxygenic\\nbacteria to oxygenic cyanobacteria and plants reflects their structural and\\nfunctional adaptation to environmental conditions. Chirality plays a\\nsignificant role in influencing the arrangement and function of key molecules\\nin these RCs. This study investigates chirality-related energy transfer in two\\ndistinct RCs: Thermochromatium tepidum (BRC) and Thermosynechococcus vulcanus\\n(PSII RC) using two-dimensional electronic spectroscopy (2DES). Circularly\\npolarized laser pulses reveal transient chiral dynamics, with 2DCD spectroscopy\\nhighlighting chiral contributions. BRC displays more complex chiral behavior,\\nwhile PSII RC shows faster coherence decay, possibly as an adaptation to\\noxidative stress. Comparing the chiral dynamics of BRC and PSII RC provides\\ninsights into photosynthetic protein evolution and function.\",\"PeriodicalId\":501304,\"journal\":{\"name\":\"arXiv - PHYS - Chemical Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Chemical Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.06996\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Chemical Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.06996","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Diverse Transient Chiral Dynamics in Evolutionary distinct Photosynthetic Reaction Centers
The evolution of photosynthetic reaction centers (RCs) from anoxygenic
bacteria to oxygenic cyanobacteria and plants reflects their structural and
functional adaptation to environmental conditions. Chirality plays a
significant role in influencing the arrangement and function of key molecules
in these RCs. This study investigates chirality-related energy transfer in two
distinct RCs: Thermochromatium tepidum (BRC) and Thermosynechococcus vulcanus
(PSII RC) using two-dimensional electronic spectroscopy (2DES). Circularly
polarized laser pulses reveal transient chiral dynamics, with 2DCD spectroscopy
highlighting chiral contributions. BRC displays more complex chiral behavior,
while PSII RC shows faster coherence decay, possibly as an adaptation to
oxidative stress. Comparing the chiral dynamics of BRC and PSII RC provides
insights into photosynthetic protein evolution and function.
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