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Quantification of enterohemorrhagic Escherichia coli O157:H7 protein abundance by high-throughput proteome

文献类型： 外文期刊

作者： Da Silva, Wanderson Marques 1 ; Bei, Jinlong 2 ; Amigo, Natalia 1 ; Pia Valacco, Maria 3 ; Amadio, Ariel 5 ; Zhang, 1 ;

作者机构： 1.Natl Inst Agr Technol, CICVyA, Inst Biotechnol, Buenos Aires, DF, Argentina

2.Guangdong Acad Agr Sci GDAAS, AGRO Biol Gene Res Ctr, Guangzhou, Guangdong, Peoples R China

3.Univ Buenos Aires, Fac Exact & Nat Sci, Mass Spectrometry Facil, CEQUIBIEM, Buenos Aires, DF, Argentina

4.CNR, CONICET, Buenos Aires, DF, Argentina

5.Natl Inst Agr Technol, Rafaela Expt Stn, Santa Fe, Argentina

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2018 年 13 卷 12 期

页码：

收录情况： SCI

摘要： Enterohemorrhagic Escherichia coli (EHEC) O157:H7 is a human pathogen responsible for diarrhea, hemorrhagic colitis and hemolytic uremic syndrome (HUS). To promote a comprehensive insight into the molecular basis of EHEC O157:H7 physiology and pathogenesis, the combined proteome of EHEC O157:H7 strains, Clade 8 and Clade 6 isolated from cattle in Argentina, and the standard EDL933 (clade 3) strain has been analyzed. From shotgun proteomic analysis a total of 2,644 non-redundant proteins of EHEC O157:H7 were identified, which correspond approximately 47% of the predicted proteome of this pathogen. Normalized spectrum abundance factor analysis was performed to estimate the protein abundance. According this analysis, 50 proteins were detected as the most abundant of EHEC O157:H7 proteome. COG analysis showed that the majority of the most abundant proteins are associated with translation processes. A KEGG enrichment analysis revealed that Glycolysis/Gluconeogenesis was the most significant pathway. On the other hand, the less abundant detected proteins are those related to DNA processes, cell respiration and prophage. Among the proteins that composed the Type III Secretion System, the most abundant protein was EspA. Altogether, the results show a subset of important proteins that contribute to physiology and pathogenicity of EHEC O157:H7.

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