Dual Sensing of Physiologic pH and Calcium by EFCAB9 Regulates Sperm Motility.
Dual Sensing of Physiologic pH and Calcium by EFCAB9 Regulates Sperm Motility.
复制标题
DOI:
10.1016/j.cell.2019.03.047
复制
发表时间:
2019-05-30
期刊:
影响因子:
64.5
通讯作者:
Chung JJ
中科院分区:
文献类型:
--
作者:
Hwang JY;Mannowetz N;Zhang Y;Everley RA;Gygi SP;Bewersdorf J;Lishko PV;Chung JJ
Varying pH of luminal fluid along the female reproductive tract is a physiological cue that modulates sperm motility. CatSper is a sperm-specific, pH-sensitive calcium channel essential for hyperactivated motility and male fertility. Multi-subunit CatSper channel complexes organize linear Ca2+ signaling nanodomains along the sperm tail. Here, we identify EF-hand calcium-binding domain-containing protein 9 (EFCAB9) as a bifunctional, cytoplasmic machine modulating the channel activity and the domain organization of CatSper. Knockout mice studies demonstrate that EFCAB9, in complex with the CatSper subunit, CATSPERζ, is essential for pH-dependent and Ca2+-sensitive activation of the CatSper channel. In the absence of EFCAB9, sperm motility and fertility is compromised, and the linear arrangement of the Ca2+ signaling domains is disrupted. EFCAB9 interacts directly with CATSPERζ in a Ca2+-dependent manner and dissociates at elevated pH. These observations suggest that EFCAB9 is a long-sought, intracellular, pH-dependent Ca2+ sensor that triggers changes in sperm motility. A pH-dependent calcium sensor enables modulation of sperm motility in response to changing conditions along the female reproductive tract.
登录
查看更多内容
影响因子:
64.5
作者:
Chung JJ;Shim SH;Everley RA;Gygi SP;Zhuang X;Clapham DE
通讯作者:
Clapham DE
DOI:
10.1093/humrep/dey278
发表时间:
2018-10-01
期刊:
Human reproduction (Oxford, England)
影响因子:
--
作者:
Brown SG;Miller MR;Lishko PV;Lester DH;Publicover SJ;Barratt CLR;Martins Da Silva S
通讯作者:
Martins Da Silva S
DOI:
10.1083/jcb.63.2.641
发表时间:
1974-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Friend DS;Fawcett DW
通讯作者:
Fawcett DW
DOI:
10.1073/pnas.2536658100
发表时间:
2003-12-09
影响因子:
11.1
作者:
Carlson, AE;Westenbroek, RE;Babcock, DF
通讯作者:
Babcock, DF
影响因子:
64.8
作者:
Guo J;Zeng W;Chen Q;Lee C;Chen L;Yang Y;Cang C;Ren D;Jiang Y
通讯作者:
Jiang Y