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pAK1900-Integrase 假单胞菌整合质粒 BioVector NTCC质粒载体菌种细胞基因保藏中心

  • 价  格:¥98965
  • 货  号:pAK1900-Integrase
  • 产  地:北京
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pAK1900-Integrase 假单胞菌整合质粒

Thiol group oxidation of active and allosteric cysteines is a widespread regulatory post-translational protein modification. Pathogenic bacteria, including Pseudomonas aeruginosa and Staphylococcus aureus, use regulatory cysteine oxidation to respond to and overcome reactive oxygen species (ROS) encountered in the host environment. To obtain a proteome-wide view of oxidation-sensitive cysteines in these two pathogens, we employed a competitive activity-based protein profiling approach to globally quantify hydrogen peroxide (H2O2) reactivity with cysteines across bacterial proteomes. We identified ~200 proteins containing H2O2-sensitive cysteines, including metabolic enzymes, transcription factors, and uncharacterized proteins. Further biochemical and genetic studies identified an oxidation-responsive cysteine in the master quorum sensing regulator LasR, and redox-regulated activities for acetaldehyde dehydrogenase ExaC, arginine deiminase ArcA, and glyceraldehyde 3-phosphate dehydrogenase GAPDH. Taken together, our data indicate that pathogenic bacteria exhibit a complex, multi-layered response to ROS that includes the rapid adaption of metabolic pathways to oxidative stress challenge.


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