一个蛋白质基因组管道用于分析人类病原体Candida albicans中的蛋白质生物合成错误
Inês Correia1, Carla Oliveira1, Andreia Reis1
1Institute of Biomedicine (iBiMED) and Department of Medical Sciences (DCM), University of Aveiro, Aveiro, Portugal.
Molecular & cellular proteomics : MCP
|July 24, 2024
概括
菌表现出显著的蛋白质错误翻译,特别是在CUG部位的白蛋白错误整合. 这种翻译的模糊性有助于其适应潜力和多样化的现象,超过了以前的估计.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 菌 (Candida albicans) 是一种机会性真菌病原体,在免疫功能低下的个体中引起显著的发病率和死亡率.
- 它的毒性与温度依赖的生长,形态切换和基因组可塑性等特征有关.
- 一个异质的蛋白质组,由基因组重组和高等位基因变异产生的,有助于表型多样性.
研究的目的:
- 开发和优化用于检测和量化氨基酸错误整合事件在Candida albicans的蛋白质水平的方法.
- 研究蛋白质错误翻译对Candida albicans蛋白质组的范围和影响.
- 用工程菌株和定量报告系统验证发现.
主要方法:
- 开发和优化质谱 (MS) 和生物信息学管道,以检测罕见的氨基酸错误结合事件.
- 在CUG部位进行了基因工程Candida albicans菌株的蛋白质组分析,该菌株在CUG部位具有高氨酸误纳.
- 在体内定量功能增益光报告系统用于验证LC-MS/MS数据.
主要成果:
- 已建立的MS和生物信息管道能够识别蛋白质层面的氨基酸错误整合事件.
- 证实Candida albicans错误地将氨基酸与背景水平高于不同编码位点的氨基酸结合在一起,特别是CUG.
- 证明在CUG位点增加的白错误整合不会影响其他编码子的转化忠实度.
结论:
- 坎迪达白菌的统计蛋白质组比以前估计的更为广泛.
- 由氨基酸错误结合导致的翻译模两可,对Candida albicans的表型多样性和适应潜力作出了重大贡献.
- 环境因素可能通过翻译模糊性进一步调节Candida albicans现象.
关键词:
CUG的模两可是因为它的模两可.在Candida albicans中使用.生物信息学是一种生物信息学.质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量蛋白质基因组学翻译忠诚度 翻译忠诚度更多相关视频
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