Specificity of Human Sulfiredoxin for Reductant and Peroxiredoxin Oligomeric State.
Specificity of Human Sulfiredoxin for Reductant and Peroxiredoxin Oligomeric State.
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DOI:
10.3390/antiox10060946
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发表时间:
2021-06-11
期刊:
影响因子:
--
通讯作者:
Lowther WT
中科院分区:
文献类型:
--
作者:
Forshaw TE;Reisz JA;Nelson KJ;Gumpena R;Lawson JR;Jönsson TJ;Wu H;Clodfelter JE;Johnson LC;Furdui CM;Lowther WT
Human peroxiredoxins (Prx) are a family of antioxidant enzymes involved in a myriad of cellular functions and diseases. During the reaction with peroxides (e.g., H2O2), the typical 2-Cys Prxs change oligomeric structure between higher order (do)decamers and disulfide-linked dimers, with the hyperoxidized inactive state (-SO2H) favoring the multimeric structure of the reduced enzyme. Here, we present a study on the structural requirements for the repair of hyperoxidized 2-Cys Prxs by human sulfiredoxin (Srx) and the relative efficacy of physiological reductants hydrogen sulfide (H2S) and glutathione (GSH) in this reaction. The crystal structure of the toroidal Prx1-Srx complex shows an extended active site interface. The loss of this interface within engineered Prx2 and Prx3 dimers yielded variants more resistant to hyperoxidation and repair by Srx. Finally, we reveal for the first time Prx isoform-dependent use of and potential cooperation between GSH and H2S in supporting Srx activity.
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影响因子:
10.5
作者:
Ahmed W;Lingner J
通讯作者:
Lingner J
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
4.8
作者:
Jeong, Woojin;Park, Sung Jun;Rhee, Sue Goo
通讯作者:
Rhee, Sue Goo
影响因子:
6.6
作者:
Hopkins BL;Nadler M;Skoko JJ;Bertomeu T;Pelosi A;Shafaei PM;Levine K;Schempf A;Pennarun B;Yang B;Datta D;Bucur O;Ndebele K;Oesterreich S;Yang D;Giulia Rizzo M;Khosravi-Far R;Neumann CA
通讯作者:
Neumann CA
影响因子:
3.3
作者:
Bayer, Simone B.;Low, Felicia M.;Winterbourn, Christine C.
通讯作者:
Winterbourn, Christine C.