来自沙门氏菌 (Salmonella enterica pangenome) 的蛋白质的结构分类揭示了新的潜在病原性岛屿
Kirill E Medvedev1, Jing Zhang2,3, R Dustin Schaeffer2
1Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA. Kirill.Medvedev@UTSouthwestern.edu.
Scientific reports
|May 28, 2024
概括
本研究对Salmonella enterica的蛋白质进行了分类,识别了潜在的致病性蛋白质和新型致病性岛屿 (NPPI). 许多已识别的蛋白质被研究得很少,这突出了了解沙门氏菌毒性方面的差距.
科学领域:
- 微生物学和基因组学
- 细菌的进化和病原性.
背景情况:
- 沙门氏菌 (Salmonella enterica) 引起伤寒热,对公众健康构成重大风险.
- 了解沙门氏菌的毒性因素对于对抗传染病至关重要.
研究的目的:
- 为了进行沙门氏菌 (Salmonella enterica pangenome) 蛋白质的进化分类.
- 识别潜在的致病蛋白质和新型致病性岛屿 (NPPIs).
主要方法:
- 从13147个蛋白质中分类了17238个蛋白质域,遍及79758个S. enterica菌株.
- 分析了来自14个沙门氏菌病原性岛屿 (SPI) 的272种蛋白质.
- 对比临床和环境分离物以确定临床组中过度代表的蛋白质.
主要成果:
- 确定了3682种潜在的致病蛋白质,其中50%缺乏先前的注释.
- 36%的潜在致病蛋白质无法通过蛋白质域进化分类 (ECOD) 数据库进行分类.
- 发现了119个新的潜在病原性岛屿 (NPPI),其中一个NPPI显示了这些蛋白质的显著过度代表性.
结论:
- 潜在的致病性沙门氏菌蛋白质的很大一部分研究不足,缺乏注释.
- 已识别的NPPI代表了需要进一步调查的新毒性因素.
- 这种分类为了解沙门氏菌病原和制定有针对性的干预措施提供了基础.
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