Ero1-α and PDIs constitute a hierarchical electron transfer network of endoplasmic reticulum oxidoreductases.
Ero1-α and PDIs constitute a hierarchical electron transfer network of endoplasmic reticulum oxidoreductases.
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DOI:
10.1083/jcb.201303027
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发表时间:
2013-09-16
期刊:
影响因子:
--
通讯作者:
Nagata K
中科院分区:
文献类型:
--
作者:
Araki K;Iemura S;Kamiya Y;Ron D;Kato K;Natsume T;Nagata K
The interaction of Ero1-α and PDI facilitates the electron transfer function of Ero1-α, activating a hierarchical electron transfer network of endoplasmic reticulum oxidoreductases. Ero1-α and endoplasmic reticulum (ER) oxidoreductases of the protein disulfide isomerase (PDI) family promote the efficient introduction of disulfide bonds into nascent polypeptides in the ER. However, the hierarchy of electron transfer among these oxidoreductases is poorly understood. In this paper, Ero1-α–associated oxidoreductases were identified by proteomic analysis and further confirmed by surface plasmon resonance. Ero1-α and PDI were found to constitute a regulatory hub, whereby PDI induced conformational flexibility in an Ero1-α shuttle cysteine (Cys99) facilitated intramolecular electron transfer to the active site. In isolation, Ero1-α also oxidized ERp46, ERp57, and P5; however, kinetic measurements and redox equilibrium analysis revealed that PDI preferentially oxidized other oxidoreductases. PDI accepted electrons from the other oxidoreductases via its a′ domain, bypassing the a domain, which serves as the electron acceptor from reduced glutathione. These observations provide an integrated picture of the hierarchy of cooperative redox interactions among ER oxidoreductases in mammalian cells.
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影响因子:
11.4
作者:
Baker, Karl M.;Chakravarthi, Seema;Langton, Kevin P.;Sheppard, Alyson M.;Lu, Hui;Bulleid, Neil J.
通讯作者:
Bulleid, Neil J.
DOI:
10.1074/jbc.m808054200
发表时间:
2009-01-23
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Jessop CE;Tavender TJ;Watkins RH;Chambers JE;Bulleid NJ
通讯作者:
Bulleid NJ
影响因子:
4.8
作者:
Masui, Shoji;Vavassori, Stefano;Inaba, Kenji
通讯作者:
Inaba, Kenji
影响因子:
11.4
作者:
Benham, AM;Cabibbo, A;Braakman, I
通讯作者:
Braakman, I
DOI:
10.1073/pnas.0506448103
发表时间:
2006-01-10
影响因子:
11.1
作者:
Gross, E;Sevier, CS;Fass, D
通讯作者:
Fass, D