Article
Glu43 is an essential residue for coordinating the [Fe2S2] cluster of IscR from Acidithiobacillus ferrooxidans.
FEBS letters - 26 Nov 2008
Zeng Jia, Zhang Xiaojian, Wang Yiping, Ai Chenbing, Liu Qing, Qiu Guanzhou
Abstract excerpt
The iron-sulfur cluster regulator (IscR) was reported to be a repressor of the iscRSUA operon. In vitro transcription reactions revealed that the IscR had a repression effect on the iscR promoter. The IscR contains a [Fe2S2] cluster per each monomer, and three highly conserved cysteines were identified to ligate the [Fe2S2] cluster. It was proposed that a non-cysteine residue might be the fourth ligand for the...
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