Unique methionine-aromatic interactions govern the calmodulin redox sensor.
Unique methionine-aromatic interactions govern the calmodulin redox sensor.
复制标题
独特的蛋氨酸-芳香族相互作用控制着钙调蛋白氧化还原传感器。
DOI:
10.1016/j.bbrc.2018.09.052
复制
发表时间:
2018
影响因子:
3.1
通讯作者:
Klein,JenniferC
中科院分区:
文献类型:
--
作者:
Walgenbach,DanielG;Gregory,AndrewJ;Klein,JenniferC
Calmodulin contains multiple redox sensitive methionines whose oxidation alters the regulation of numerous targets. Molecular dynamics simulations were used to define the molecular principles that govern how calmodulin is structurally poised to detect and respond to methionine oxidation. We found that calmodulin's open and closed states were preferentially stabilized by unique, redox sensitive, methionine-aromatic interactions. Key methionine-aromatic interactions were coupled to reorientation of EF hand helices. Methionine to glutamine substitutions designed to mimic methionine oxidation strongly altered conformational transitions by modulating the strength of methionine-aromatic interactions. Together, these results suggest a broadly applicable redox sensing mechanism though which methionine oxidation by cellular oxidants alters the strength of methionine-aromatic interactions critical for functional protein dynamics.
登录
查看更多内容
影响因子:
4.8
作者:
Nadine D. Younan;Rebecca C. Nadal;Paul Davies;David R. Brown;J. H. Viles
通讯作者:
J. H. Viles
DOI:
10.1016/j.bbagen.2013.04.038
发表时间:
2014-02
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Kim G;Weiss SJ;Levine RL
通讯作者:
Levine RL
影响因子:
2.9
作者:
Humphrey, W;Dalke, A;Schulten, K
通讯作者:
Schulten, K
影响因子:
2.9
作者:
Anbanandam, A;Urbauer, RJB;Urbauer, JL
通讯作者:
Urbauer, JL
影响因子:
14.8
作者:
Lewis, Andrew K.;Dunleavy, Katie M.;Senkow, Tiffany L.;Her, Cheng;Horn, Benjamin T.;Jersett, Mark A.;Mahling, Ryan;McCarthy, Megan R.;Perell, Gabriella T.;Valley, Christopher C.;Karim, Christine B.;Gao, Jiali;Pomerantz, William C. K.;Thomas, David D.;Cembran, Alessandro;Hinderliter, Anne;Sachs, Jonathan N.
通讯作者:
Sachs, Jonathan N.