MsrB1 and MICALs regulate actin assembly and macrophage function via reversible stereoselective methionine oxidation.

MsrB1 and MICALs regulate actin assembly and macrophage function via reversible stereoselective methionine oxidation.
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MSRB1和Micals通过可逆的立体选择性蛋氨酸氧化来调节肌动蛋白的组装和巨噬细胞功能。

DOI:
10.1016/j.molcel.2013.06.019
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发表时间:
2013-08-08
期刊:
影响因子:
16
通讯作者:
Gladyshev, Vadim N.
Gladyshev, Vadim N.
中科院分区:
生物学1区
文献类型:
--
作者:
Lee, Byung Cheon;Peterfi, Zalan;Hoffmann, Fukun W.;Moore, Richard E.;Kaya, Alaattin;Avanesov, Andrei;Tarrago, Lionel;Zhou, Yani;Weerapana, Eranthie;Fomenko, Dmitri E.;Hoffmann, Peter R.;Gladyshev, Vadim N.

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蛋白质功能的氧化还原控制涉及氨基酸残基的氧化和还原,但涉及的机制和调节因子尚不充分了解。在这里,我们报告了蛋氨酸- r -亚砜还原酶B1 (MsrB1),与化学蛋白一起,通过立体选择性蛋氨酸氧化和可逆的位点特异性方式还原,调节哺乳动物肌动蛋白组装。肌动蛋白中的两个蛋氨酸残基分别被Mical1和Mical2特异地转化为蛋氨酸- r -亚硫胺,并被硒蛋白MsrB1还原为蛋氨酸,分别支持肌动蛋白的分解和组装。巨噬细胞在细胞激活过程中通过刺激MsrB1的表达和活性来利用这种氧化还原控制,作为先天免疫的一部分。我们确定了MsrB1作为一种化学拮抗剂在协调肌动蛋白动力学和巨噬细胞功能中的调节作用。更普遍的是,我们的研究表明,蛋白质可以通过可逆的位点特异性蛋氨酸- r -亚砜化来调节。
Redox control of protein function involves oxidation and reduction of amino acid residues, but mechanisms and regulators involved are insufficiently understood. Here, we report that methionine-R-sulfoxide reductase B1 (MsrB1) regulates, in conjunction with Mical proteins, mammalian actin assembly via stereoselective methionine oxidation and reduction in a reversible, site-specific manner. Two methionine residues in actin are specifically converted to methionine-R-sulfoxide by Mical1 and Mical2 and reduced back to methionine by selenoprotein MsrB1, supporting actin disassembly and assembly, respectively. Macrophages utilize this redox control during cellular activation by stimulating MsrB1 expression and activity as a part of innate immunity. We identified the regulatory role of MsrB1 as a Mical antagonist in orchestrating actin dynamics and macrophage function. More generally, our study shows that proteins can be regulated by reversible site-specific methionine-R-sulfoxidation.
蛋氨酸亚砜还原酶 A 立体定向氧化钙调蛋白。
DOI: 10.1016/j.freeradbiomed.2013.04.004
发表时间: 2013-08
影响因子: 7.4
作者:
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通讯作者: Levine, Rodney L.
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发表时间: 2010-02-11
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发表时间: 2009-11
期刊: Biochimica et biophysica acta
影响因子: --
作者:
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期刊: Nature reviews. Molecular cell biology
影响因子: --
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DOI: 10.1074/jbc.m805770200
发表时间: 2009-02-27
影响因子: 4.8
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通讯作者: Gladyshev, Vadim N.