Incorporation of molybdenum in rubredoxin: models for mononuclear molybdenum enzymes
Incorporation of molybdenum in rubredoxin: models for mononuclear molybdenum enzymes
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红氧还蛋白中钼的掺入:单核钼酶模型
DOI:
10.1007/s00775-015-1268-0
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
J. Moura
中科院分区:
文献类型:
--
作者:
Biplab K. Maiti;L. Maia;C. Silveira;S. Todorović;C. Carreira;Marta S P Carepo;R. Grazina;I. Moura;S. R. Pauleta;J. Moura
Molybdenum is found in the active site of enzymes usually coordinated by one or two pyranopterin molecules. Here, we mimic an enzyme with a mononuclear molybdenum-bis pyranopterin center by incorporating molybdenum in rubredoxin. In the molybdenum-substituted rubredoxin, the metal ion is coordinated by four sulfurs from conserved cysteine residues of the apo-rubredoxin and two other exogenous ligands, oxygen and thiol, forming a Mo(VI)-(S-Cys)4(O)(X) complex, where X represents –OH or –SR. The rubredoxin molybdenum center is stabilized in a Mo(VI) oxidation state, but can be reduced to Mo(IV) via Mo(V) by dithionite, being a suitable model for the spectroscopic properties of resting and reduced forms of molybdenum-bis pyranopterin-containing enzymes. Preliminary experiments indicate that the molybdenum site built in rubredoxin can promote oxo transfer reactions, as exemplified with the oxidation of arsenite to arsenate.
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影响因子:
15
作者:
Yang,Jing;Rothery,Richard;Sempombe,Joseph;Weiner,JoelH;Kirk,MartinL
通讯作者:
Kirk,MartinL
影响因子:
15
作者:
Sun, Ning;Dey, Abhishek;Xiao, Zhiguang;Wedd, Anthony G.;Hodgson, Keith O.;Hedman, Britt;Solomon, Edward I.
通讯作者:
Solomon, Edward I.
影响因子:
4.6
作者:
Spuches, AM;Kruszyna, HG;Wilcox, DE
通讯作者:
Wilcox, DE
影响因子:
62.1
作者:
Hille, Russ;Hall, James;Basu, Partha
通讯作者:
Basu, Partha
DOI:
10.1016/s0021-9258(18)35891-5
发表时间:
1992-11
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Gretchen L. AndersonSg;Jeffrey Williamsll;Russ HilleS
通讯作者:
Gretchen L. AndersonSg;Jeffrey Williamsll;Russ HilleS