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DOI | 10.1126/science.aan5611 |
Structure of a symmetric photosynthetic reaction center-photosystem | |
Gisriel, Christopher1; Sarrou, Iosifina2; Ferlez, Bryan3; Golbeck, John H.3,4; Redding, Kevin E.1,5; Fromme, Raimund1,6 | |
2017-09-08 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 357期号:6355页码:1021-1025 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | Reaction centers are pigment-protein complexes that drive photosynthesis by converting light into chemical energy. It is believed that they arose once from a homodimeric protein. The symmetry of a homodimer is broken in heterodimeric reaction-center structures, such as those reported previously. The 2.2-angstrom resolution x-ray structure of the homodimeric reaction center-photosystem from the phototroph Heliobacterium modesticaldum exhibits perfect C-2 symmetry. The core polypeptide dimer and two small subunits coordinate 54 bacteriochlorophylls and 2 carotenoids that capture and transfer energy to the electron transfer chain at the center, which performs charge separation and consists of 6 (bacterio) chlorophylls and an iron-sulfur cluster; unlike other reaction centers, it lacks a bound quinone. This structure preserves characteristics of the ancestral reaction center, providing insight into the evolution of photosynthesis. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409455700040 |
WOS关键词 | BACTERIUM HELIOBACILLUS-MOBILIS ; ELECTRON-TRANSFER ; HELIOBACTERIUM-MODESTICALDUM ; CHLAMYDOMONAS-REINHARDTII ; RHODOPSEUDOMONAS-VIRIDIS ; RHODOBACTER-SPHAEROIDES ; CYTOCHROME C(6) ; CHLORUM ; IDENTIFICATION ; RESOLUTION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/196820 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Arizona State Univ, Sch Mol Sci, Tempe, AZ 85287 USA; 2.Deutsch Elekt Synchrotron DESY, Ctr Free Elect Laser Sci, D-22607 Hamburg, Germany; 3.Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA; 4.Penn State Univ, Dept Chem, University Pk, PA 16802 USA; 5.Arizona State Univ, Ctr Bioenergy & Photosynth, Tempe, AZ 85287 USA; 6.Biodesign Inst, Ctr Appl Struct Discovery, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | Gisriel, Christopher,Sarrou, Iosifina,Ferlez, Bryan,et al. Structure of a symmetric photosynthetic reaction center-photosystem[J]. SCIENCE,2017,357(6355):1021-1025. |
APA | Gisriel, Christopher,Sarrou, Iosifina,Ferlez, Bryan,Golbeck, John H.,Redding, Kevin E.,&Fromme, Raimund.(2017).Structure of a symmetric photosynthetic reaction center-photosystem.SCIENCE,357(6355),1021-1025. |
MLA | Gisriel, Christopher,et al."Structure of a symmetric photosynthetic reaction center-photosystem".SCIENCE 357.6355(2017):1021-1025. |
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