Activation loop phosphorylation tunes conformational dynamics underlying Pyk2 tyrosine kinase activation
Activation loop phosphorylation tunes conformational dynamics underlying Pyk2 tyrosine kinase activation
复制标题
激活环磷酸化调节 Pyk2 酪氨酸激酶激活的构象动力学
DOI:
10.1016/j.str.2023.02.003
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发表时间:
2023
期刊:
影响因子:
5.7
通讯作者:
Underbakke, Eric S.
中科院分区:
文献类型:
--
作者:
Palhano Zanela, Tania M.;Woudenberg, Alexzandrea;Romero Bello, Karen G.;Underbakke, Eric S.
Pyk2 is a multidomain non-receptor tyrosine kinase that undergoes a multistage activation mechanism. Activation is instigated by conformational rearrangements relieving autoinhibitory FERM domain interactions. The kinase autophosphorylates a central linker residue to recruit Src kinase. Pyk2 and Src mutually phosphorylate activation loops to confer full activation. While the mechanisms of autoinhibition are established, the conformational dynamics associated with autophosphorylation and Src recruitment remain unclear. We employ hydrogen/deuterium exchange mass spectrometry and kinase activity profiling to map the conformational dynamics associated with substrate binding and Src-mediated activation loop phosphorylation. Nucleotide engagement stabilizes the autoinhibitory interface, while phosphorylation deprotects both FERM and kinase regulatory surfaces. Phosphorylation organizes active site motifs linking catalytic loop with activation segment. Dynamics of the activation segment anchor propagate to EF/G helices to prevent reversion of the autoinhibitory FERM interaction. We employ targeted mutagenesis to dissect how phosphorylation-induced conformational rearrangements elevate kinase activity above the basal autophosphorylation rate.
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影响因子:
64.8
作者:
Jumper J;Evans R;Pritzel A;Green T;Figurnov M;Ronneberger O;Tunyasuvunakool K;Bates R;Žídek A;Potapenko A;Bridgland A;Meyer C;Kohl SAA;Ballard AJ;Cowie A;Romera-Paredes B;Nikolov S;Jain R;Adler J;Back T;Petersen S;Reiman D;Clancy E;Zielinski M;Steinegger M;Pacholska M;Berghammer T;Bodenstein S;Silver D;Vinyals O;Senior AW;Kavukcuoglu K;Kohli P;Hassabis D
通讯作者:
Hassabis D
影响因子:
13.8
作者:
Taylor, Susan S.;Kornev, Alexandr P.
通讯作者:
Kornev, Alexandr P.
DOI:
10.1016/j.bbapap.2015.04.007
发表时间:
2015
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Taylor,SusanS;Shaw,AndreyS;Kannan,Natarajan;Kornev,AlexandrP
通讯作者:
Kornev,AlexandrP
影响因子:
14.9
作者:
Varadi M;Anyango S;Deshpande M;Nair S;Natassia C;Yordanova G;Yuan D;Stroe O;Wood G;Laydon A;Žídek A;Green T;Tunyasuvunakool K;Petersen S;Jumper J;Clancy E;Green R;Vora A;Lutfi M;Figurnov M;Cowie A;Hobbs N;Kohli P;Kleywegt G;Birney E;Hassabis D;Velankar S
通讯作者:
Velankar S
影响因子:
3.2
作者:
Lars Sørensen;R. Salbo
通讯作者:
R. Salbo