Cryo-EM structure of the hyperpolarization-activated inwardly rectifying potassium channel KAT1 from Arabidopsis  

作　　者：Siyu Li Fan Yang Demeng Sun Yong Zhang Mengge Zhang Sanling Liu Peng Zhou Chaowei Shi Longhua Zhang Changlin Tian 

机构地区：[1]Hefei National Laboratory of Physical Sciences at Microscale,Anhui Laboratory of Advanced Photonic Science and Technology and School of Life Sciences,University of Science and Technology of China,Hefei,Anhui 230026,China [2]High Magnetic Field Laboratory,Chinese Academy of Sciences,Hefei,Anhui 230030,China

出　　处：《Cell Research》2020年第11期1049-1052,共4页细胞研究（英文版）

基　　金：This work was funded by the National Key Research and Development Project of China(2016YFA0400903,2017YFA0505201 and 2017YFA0505403);National Natural Science Foundation of China(21778051,21825703 and 21927814);the Strategic Priority Research Program of Chinese Academy of Sciences(XDB37040201).

摘　　要：Dear Editor,Plants utilize K^+ions to maintain hydrostatic pressure,drive irreversible cell expansion for growth,and facilitate reversible changes in guard cell volume that cause stomatal opening or closing.KAT1 is a voltage-dependent potassium channel from Arabidopsis thaliana that is mainly expressed in guard cells.KAT1 allows the influx of K+,leading to the swelling and opening of the stoma,and therefore plays a key role in regulating the aperture of stomatal pores on the surface of plant leaves.

关 键 词：POTASSIUM ARABIDOPSIS channel 

分 类 号：Q943.2[生物学—植物学]