Proton-Coupled Electron Transfer of Plastoquinone Redox Reactions in Photosystem II: A Pump-Probe Ultraviolet Resonance Raman Study

doi:10.1021/acs.jpclett.9b00959

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	Proton-Coupled Electron Transfer of Plastoquinone Redox Reactions in Photosystem II: A Pump-Probe Ultraviolet Resonance Raman Study
	Chen, Jun 1; Chen, Jinfan ; Liu, Ying 5; Zheng, Yang 1; Zhu, Qingjun ; Han, Guangye ; Shen, Jian-Ren
刊名	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
	2019
卷号	10 期号:12 页码:3240-3247
ISSN号	1948-7185
DOI	10.1021/acs.jpclett.9b00959
文献子类	Article
英文摘要	Plastoquinones (PQs) act as electron and proton mediators in photosystem II (PSII) for solar-to-chemical energy conversion. It is known that the redox potential of PQ varies in a wide range spanning hundreds of millivolts; however, its structural origin is not known yet. Here, by developing a pump-probe ultraviolet resonance Raman technique, we measured the vibrational structures of PQs including Q(A) and Q(B) in cyanobacterial PSII directly The conversion of Q(A) to Q(A)(center dot-) in the Mn-depleted PSII is verified by direct observation of the distinct Q(A)(center dot-) vibrational bands. A frequency upshift of the ring C=O/C=C stretch band at 1565 cm(-1) for Q(A)(center dot-) was observed, which suggests a pi-pi interaction between the quinone ring and Trp253. In contrast, proton-coupled reduction of Q(A) to Q(A)H upon light-driven electron transfer is demonstrated in PSII without Q(B) bound. The H-bond between Q(A) and His214 is likely the proton origin of this proton-coupled electron transfer.
学科主题	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
出版地	WASHINGTON
WOS关键词	SEMIQUINONE-IRON COMPLEX ; QUINONE ACCEPTOR ; CHLOROPHYLL-A ; SPECTRA ; MECHANISM ; Q(A) ; 1,4-BENZOQUINONE ; REDUCTION ; EPR ; POTENTIALS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000472804700008
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21573223, 11705170, 31470339] ; Foundation from Institute of Materials CAEP [TP01201603, TP02201709]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19486]
专题	中科院光生物学重点实验室
作者单位	1.China Acad Engn Phys, Inst Mat, Mianyang 621907, Sichuan, Peoples R China 2.Okayama Univ, Res Inst Interdisciplinary Sci, Grad Sch Nat Sci & Technol, Tsushima Naka 3-1-1, Okayama 7008530, Japan 3.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 4.Chinese Acad Sci, Photosynth Res Ctr, Key Lab Photobiol, Inst Bot, 20 Nanxincun, Beijing 100093, Peoples R China 5.Sci & Technol Surface Phys & Chem Lab, Jiangyou 621908, Peoples R China
推荐引用方式 GB/T 7714	Chen, Jun,Chen, Jinfan,Liu, Ying,et al. Proton-Coupled Electron Transfer of Plastoquinone Redox Reactions in Photosystem II: A Pump-Probe Ultraviolet Resonance Raman Study[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2019,10(12):3240-3247.
APA	Chen, Jun.,Chen, Jinfan.,Liu, Ying.,Zheng, Yang.,Zhu, Qingjun.,...&Shen, Jian-Ren.(2019).Proton-Coupled Electron Transfer of Plastoquinone Redox Reactions in Photosystem II: A Pump-Probe Ultraviolet Resonance Raman Study.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,10(12),3240-3247.
MLA	Chen, Jun,et al."Proton-Coupled Electron Transfer of Plastoquinone Redox Reactions in Photosystem II: A Pump-Probe Ultraviolet Resonance Raman Study".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 10.12(2019):3240-3247.