干旱区生态环境知识资源中心(Arid): The structure of photosystem I from a high-light-tolerant cyanobacteria

Arid

DOI	10.7554/eLife.67518
	The structure of photosystem I from a high-light-tolerant cyanobacteria
	Dobson, Zachary; Ahad, Safa; Vanlandingham, Jackson; Toporik, Hila; Vaughn, Natalie; Vaughn, Michael; Williams, Dewight; Reppert, Michael; Fromme, Petra; Mazor, Yuval
通讯作者	Mazor, Y (corresponding author), Arizona State Univ, Sch Mol Sci, Tempe, AZ 85287 USA. ; Mazor, Y (corresponding author), Arizona State Univ, BiodesignCtr Appl Struct Discovery, Tempe, AZ 85287 USA.
来源期刊	ELIFE
ISSN	2050-084X
出版年	2021
卷号	10
英文摘要	Photosynthetic organisms have adapted to survive a myriad of extreme environments from the earth's deserts to its poles, yet the proteins that carry out the light reactions of photosynthesis are highly conserved from the cyanobacteria to modern day crops. To investigate adaptations of the photosynthetic machinery in cyanobacteria to excessive light stress, we isolated a new strain of cyanobacteria, Cyanobacterium aponinum 0216, from the extreme light environment of the Sonoran Desert. Here we report the biochemical characterization and the 2.7 A resolution structure of trimeric photosystem I from this high-light-tolerant cyanobacterium. The structure shows a new conformation of the PsaL C-terminus that supports trimer formation of cyanobacterial photosystem I. The spectroscopic analysis of this photosystem I revealed a decrease in far-red absorption, which is attributed to a decrease in the number of long- wavelength chlorophylls. Using these findings, we constructed two chimeric PSIs in Synechocystis sp. PCC 6803 demonstrating how unique structural features in photosynthetic complexes can change spectroscopic properties, allowing organisms to thrive under different environmental stresses.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000695716000001
WOS关键词	PHOTOSYNTHETIC ELECTRON-TRANSPORT ; ANTENNA PROTEIN COMPLEX ; CUCUMIS-SATIVUS L ; SYNECHOCYSTIS PCC-6803 ; OPTICAL-SPECTRA ; PCC 6803 ; PHOTOINHIBITION ; RED ; FLUORESCENCE ; ENERGY
WOS类目	Biology
WOS研究方向	Life Sciences & Biomedicine - Other Topics
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363062
作者单位	[Dobson, Zachary; Vanlandingham, Jackson; Toporik, Hila; Vaughn, Natalie; Vaughn, Michael; Fromme, Petra; Mazor, Yuval] Arizona State Univ, Sch Mol Sci, Tempe, AZ 85287 USA; [Dobson, Zachary; Vanlandingham, Jackson; Toporik, Hila; Vaughn, Natalie; Vaughn, Michael; Fromme, Petra; Mazor, Yuval] Arizona State Univ, BiodesignCtr Appl Struct Discovery, Tempe, AZ 85287 USA; [Ahad, Safa; Reppert, Michael] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA; [Williams, Dewight] Arizona State Univ, John M Cowley Ctr High Resolut Electron Microscop, Tempe, AZ USA
推荐引用方式 GB/T 7714	Dobson, Zachary,Ahad, Safa,Vanlandingham, Jackson,et al. The structure of photosystem I from a high-light-tolerant cyanobacteria[J]. Arizona State University,2021,10.
APA	Dobson, Zachary.,Ahad, Safa.,Vanlandingham, Jackson.,Toporik, Hila.,Vaughn, Natalie.,...&Mazor, Yuval.(2021).The structure of photosystem I from a high-light-tolerant cyanobacteria.ELIFE,10.
MLA	Dobson, Zachary,et al."The structure of photosystem I from a high-light-tolerant cyanobacteria".ELIFE 10(2021).