Structural determinants of 5',6'-epoxyeicosatrienoic acid binding to and activation of TRPV4 channel.
Structural determinants of 5',6'-epoxyeicosatrienoic acid binding to and activation of TRPV4 channel.
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DOI:
10.1038/s41598-017-11274-1
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发表时间:
2017-09-05
影响因子:
4.6
通讯作者:
Valverde MA
中科院分区:
文献类型:
--
作者:
Berna-Erro A;Izquierdo-Serra M;Sepúlveda RV;Rubio-Moscardo F;Doñate-Macián P;Serra SA;Carrillo-Garcia J;Perálvarez-Marín A;González-Nilo F;Fernández-Fernández JM;Valverde MA
TRPV4 cation channel activation by cytochrome P450-mediated derivatives of arachidonic acid (AA), epoxyeicosatrienoic acids (EETs), constitute a major mechanisms of endothelium-derived vasodilatation. Besides, TRPV4 mechano/osmosensitivity depends on phospholipase A2 (PLA2) activation and subsequent production of AA and EETs. However, the lack of evidence for a direct interaction of EETs with TRPV4 together with claims of EET-independent mechanical activation of TRPV4 has cast doubts on the validity of this mechanism. We now report: 1) The identification of an EET-binding pocket that specifically mediates TRPV4 activation by 5′,6′-EET, AA and hypotonic cell swelling, thereby suggesting that all these stimuli shared a common structural target within the TRPV4 channel; and 2) A structural insight into the gating of TRPV4 by a natural agonist (5′,6′-EET) in which K535 plays a crucial role, as mutant TRPV4-K535A losses binding of and gating by EET, without affecting GSK1016790A, 4α-phorbol 12,13-didecanoate and heat mediated channel activation. Together, our data demonstrates that the mechano- and osmotransducing messenger EET gates TRPV4 by a direct action on a site formed by residues from the S2-S3 linker, S4 and S4-S5 linker.
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DOI:
10.1161/hypertensionaha.108.117499
发表时间:
2009-02
期刊:
Hypertension (Dallas, Tex. : 1979)
影响因子:
--
作者:
Gao F;Sui D;Garavito RM;Worden RM;Wang DH
通讯作者:
Wang DH
DOI:
10.1073/pnas.1735416100
发表时间:
2003-11-11
影响因子:
11.1
作者:
Liedtke, W;Friedman, JM
通讯作者:
Friedman, JM
影响因子:
5.3
作者:
Alessandri-Haber, N;Dina, OA;Levine, JD
通讯作者:
Levine, JD
影响因子:
4.8
作者:
Arniges, M;Vázquez, E;Valverde, MA
通讯作者:
Valverde, MA
影响因子:
4.8
作者:
Boukalova, Stepana;Marsakova, Lenka;Vlachova, Viktorie
通讯作者:
Vlachova, Viktorie