Article
Reactivities of quinone-free DsbB from Escherichia coli.
The Journal of biological chemistry - 23 Sept 2005
Inaba Kenji, Takahashi Yoh-Hei, Ito Koreaki
Abstract excerpt
DsbB is a disulfide oxidoreductase present in the Escherichia coli plasma membrane. Its cysteine pairs, Cys41-Cys44 and Cys104-Cys130, facing the periplasm, as well as the bound quinone molecules play crucial roles in oxidizing DsbA, the protein dithiol oxidant in the periplasm. In this study, we characterized quinone-free forms of DsbB prepared from mutant cells unable to synthesize ubiquinone and menaquinone....
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