网站地图 联系我们搜索内部网English | 中国科学院
首页 所况简介 机构设置 科研队伍 科学研究平台 院地合作 党群园地 国际交流 博士后 研究生教育 科学传播 信息公开
科研进展
成果报道
最新重要论文(影响因子PNAS及以上)
发表论文数据库
所级学术报告
科学成果
发表论文
专著
专利
获奖
专题
所史丛书
所庆专辑
建所50周年画册
现在位置:首页 > 科研进展 > 最新重要论文(影响因子PNAS及以上)
Structure and assembly mechanism of plant C2S2M2-type PSII-LHCII supercomplex,Science 25 Aug 2017: Vol. 357, Issue 6353, pp. 815-820
2017-08-31 | 【     】【打印】【关闭

Science 25 Aug 2017: Vol. 357, Issue 6353, pp. 815-820, DOI: 10.1126/science.aan0327

Structure and assembly mechanism of plant C2S2M2-type PSII-LHCII supercomplex

Xiaodong Su, Jun Ma, Xuepeng Wei, Peng Cao, Dongjie Zhu, Wenrui Chang, Zhenfeng Liu, Xinzheng Zhang, Mei Li

Abstract

In plants, the photosynthetic machinery photosystem II (PSII) consists of a core complex associated with variable numbers of light-harvesting complexes II (LHCIIs). The supercomplex, comprising a dimeric core and two strongly bound and two moderately bound LHCIIs (C2S2M2), is the dominant form in plants acclimated to limited light. Here we report cryo–electron microscopy structures of two forms of C2S2M2 (termed stacked and unstacked) from Pisum sativum at 2.7- and 3.2-angstrom resolution, respectively. In each C2S2M2, the moderately bound LHCII assembles specifically with a peripheral antenna complex CP24-CP29 heterodimer and the strongly bound LHCII, to establish a pigment network that facilitates light harvesting at the periphery and energy transfer into the core. The high mobility of peripheral antennae, including the moderately bound LHCII and CP24, provides insights into functional regulation of plant PSII.

相关报道:http://www.ibp.cas.cn/kyjz/zxdt/201708/t20170826_4852034.html

文章链接:http://science.sciencemag.org/content/357/6353/815

评 论
                 
版权所有:中国科学院生物物理研究所     京ICP备05002792号 京公网安备 110402500011 号
地址:北京市朝阳区大屯路15号(100101) 电话:010-64889872
意见反馈联系人:马秋云 电子邮件:maqiuyun@moon.ibp.ac.cn