Interplay between the Zur Regulon Components and Metal Resistance in Cupriavidus metallidurans
نویسندگان
چکیده
منابع مشابه
Interplay between seven secondary metal uptake systems is required for full metal resistance of Cupriavidus metallidurans.
The beta-proteobacterium Cupriavidus metallidurans is able to grow in metal-contaminated environments due to having sophisticated metal efflux systems. Here, the contribution of all seven known secondary metal uptake systems (ZupT, PitA, CorA1, CorA2, CorA3, ZntB, HoxN) to metal resistance is characterized. In a strategic deletion approach, all ten double deletion mutants, a variety of triple a...
متن کاملThe zinc repository of Cupriavidus metallidurans.
Zinc is a central player in the metalloproteomes of prokaryotes and eukaryotes. We used a bottom-up quantitative proteomic approach to reveal the repository of the zinc pools in the proteobacterium Cupriavidus metallidurans. About 60% of the theoretical proteome of C. metallidurans was identified, quantified, and the defect in zinc allocation was compared between a ΔzupT mutant and its parent s...
متن کاملContributions of five secondary metal uptake systems to metal homeostasis of Cupriavidus metallidurans CH34.
Cupriavidus metallidurans is adapted to high concentrations of transition metal cations and is a model system for studying metal homeostasis in difficult environments. The elemental composition of C. metallidurans cells cultivated under various conditions was determined, revealing the ability of the bacterium to shield homeostasis of one essential metal from the toxic action of another. The con...
متن کاملImmobilisation of Platinum by Cupriavidus metallidurans
The metal resistant bacterium Cupriavidus metallidurans CH34, challenged with aqueous platinous and platinic chloride, rapidly immobilized platinum. XANES/EXAFS analysis of these reaction systems demonstrated that platinum binding shifted from chloride to carboxyl functional groups within the bacteria. Pt(IV) was more toxic than Pt(II), presumably due to the oxidative stress imparted by the pla...
متن کاملThe biological chemistry of the transition metal "transportome" of Cupriavidus metallidurans.
This review tries to illuminate how the bacterium Cupriavidus metallidurans CH34 is able to allocate essential transition metal cations to their target proteins although these metals have similar charge-to-surface ratios and chemical features, exert toxic effects, compete with each other, and occur in the bacterial environment over a huge range of concentrations and speciations. Central to this...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2019
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.00192-19