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Proteome Analysis of Alkylhydroxide Peroxidase-Deficient Isogenic Mutant of Helicobacter pylori 26695

Journal of Bacteriology and Virology 2019년 49권 4호 p.191 ~ 202
이우곤 ( Lee Woo-Kon ) - Gyeongsang National University School of Medicine Department of Microbiology

백승철 ( Baik Seung-Chul ) - Gyeongsang National University School of Medicine Department of Microbiology
 ( Shin Min-Kyung ) - Gyeongsang National University School of Medicine Department of Microbiology
정명환 ( Jung Myung-Hwan ) - Gyeongsang National University School of Medicine Department of Microbiology
박진식 ( Park Jin-Sik ) - Gyeongsang National University School of Medicine Department of Microbiology
 ( Ha Jong-Hoon ) - Gyeongsang National University School of Medicine Department of Microbiology
 ( Lee Dong-Hae ) - Gyeongsang National University School of Medicine Department of Microbiology
 ( Kim Min-Jeong ) - Gyeongsang National University School of Medicine Department of Microbiology
 ( Shin Jeong-Ih ) - Gyeongsang National University School of Medicine Department of Microbiology
강형련 ( Kang Hyung-Lyun ) - Gyeongsang National University School of Medicine Department of Microbiology

Abstract


In order to investigate the antioxidant effect of alkylhydroxide peroxidase (ahpC) of Helicobacter pylori (H. pylori) 26695, an ahpC-deficient mutant (H. pylori 26695 ahpC::cat) was generated. ahpC-deficient mutant was grown slowly at lower pressure of oxygen (5% oxygen) compared to the H. pylori 26695. Whole cell proteins isolated form H. pylori 26695 and H. pylori 26695 ahpC::cat were analyzed by MALDI-TOF and tandem-MS. The expression of 15 proteins, including Ppa, HypB, GrpE, Elp, RecA, GroES, Mda66, RibE, NapA, GlnA, BioB, TrxB, Tsf, FumC and Icd, was more than doubled in H. pylori 26695 ahpC::cat. Production of 10 proteins such as UreG, FabE, Adk, Pnp, OorC, AtpA, AtpD, Nqq3, Pfr, and TagD decreased below 50% in H. pylori 26695 ahpC::cat compared to the H. pylori 26695. In microarray analysis, 9 genes including sul1, amiE, frxA, fecA, hyuA, and katA increased in transcription level in H. pylori 26695 ahpC::cat compared to H. pylori 26695. A total of 24 genes, including flaB, protein kinase C inhibitor, cag16, pabC, and sabA, reduced in transcription. 27 genes, including HP0889, showed common expression changes in ahpC, katA, and sodB-deficient mutations. As a result of this study, there were not many genes whose expression was commonly changed by the deletion of each of the three major antioxidant enzymes of H. pylori. These results showed the functions and regulation of the three antioxidant enzymes were different in H. pylori.

키워드

Helicobacter pylori; antioxidant; ahpC
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