Single particle cryo-EM structure of the outer hair cell motor protein prestin.
Single particle cryo-EM structure of the outer hair cell motor protein prestin.
复制标题
DOI:
10.1038/s41467-021-27915-z
复制
发表时间:
2022-01-12
影响因子:
16.6
通讯作者:
Santos-Sacchi J
中科院分区:
文献类型:
--
作者:
Butan C;Song Q;Bai JP;Tan WJT;Navaratnam D;Santos-Sacchi J
The mammalian outer hair cell (OHC) protein prestin (Slc26a5) differs from other Slc26 family members due to its unique piezoelectric-like property that drives OHC electromotility, the putative mechanism for cochlear amplification. Here, we use cryo-electron microscopy to determine prestin’s structure at 3.6 Å resolution. Prestin is structurally similar to the anion transporter Slc26a9. It is captured in an inward-open state which may reflect prestin’s contracted state. Two well-separated transmembrane (TM) domains and two cytoplasmic sulfate transporter and anti-sigma factor antagonist (STAS) domains form a swapped dimer. The transmembrane domains consist of 14 transmembrane segments organized in two 7+7 inverted repeats, an architecture first observed in the bacterial symporter UraA. Mutation of prestin’s chloride binding site removes salicylate competition with anions while retaining the prestin characteristic displacement currents (Nonlinear Capacitance), undermining the extrinsic voltage sensor hypothesis for prestin function. Prestin, expressed in outer hair cell (OHC), belongs to the Slc26 transporter family and functions as a voltage-driven motor that drives OHC electromotility. Here, the authors report cryo-EM structure and characterization of gerbil prestin, with insights into its mechanism of action.
登录
查看更多内容
DOI:
10.1085/jgp.201711836
发表时间:
2017-12-04
期刊:
The Journal of general physiology
影响因子:
--
作者:
Ficici E;Faraldo-Gómez JD;Jennings ML;Forrest LR
通讯作者:
Forrest LR
影响因子:
3.7
作者:
Bian S;Navaratnam D;Santos-Sacchi J
通讯作者:
Santos-Sacchi J
DOI:
10.1016/0304-4157(92)90031-5
发表时间:
1992-03-26
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
FRANCIOLINI, F;PETRIS, A
通讯作者:
PETRIS, A
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
16.2
作者:
Dallos, Peter;Wu, Xudong;Zuo, Jian
通讯作者:
Zuo, Jian