来自位于细菌起源非核糖体合成酶模块内的基化域的特征序列的比较分析
Weina Gao1, Zhishen Zhang1, Huiying Yu2
1College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, P.R. China.
Journal of microbiology and biotechnology
|July 14, 2025
概括
这项研究确定了508个非核糖体合成酶 (NRPS) 的腺化 (A) 域中的508个特征序列 (SNS),揭示了36个氨基酸部分的特异性和新型修饰,有助于NRPS系统的识别.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
背景情况:
- 非核糖体是由称为非核糖体合成酶 (NRPS) 的大型模块化酶合成的.
- 在NRPS模块中的基化 (A) 域含有特异性传递代码,称为签名序列 (SNS),它决定了氨基酸选择.
研究的目的:
- 分析大量的A域序列数据集,以识别和描述SNS.
- 了解SNSs,氨基酸特异性和NRPS组件中的翻译后修改之间的关系.
主要方法:
- 对2051个细菌物种的67个A域序列进行生物信息分析.
- 序列对齐和聚类以识别不同的SNS.
- 在SNSs,氨基酸部分和观察到的修改之间进行相关性分析.
主要成果:
- 识别了508种不同的SNS,其中超过80%显示了36种蛋白质原和非蛋白质原α-氨基酸部分 (α-AAMs) 的特异性.
- 观察到的N-甲基化,单氧化酶活性,氧化和β-基化等修饰影响A域亲和和延长.
- 常见的非典型的对性修饰的甲素,三素,氨酸和氨酸; 41个模块的代使用.
结论:
- 鉴定到的SNS和修改模式显著提高了预测未具特征NRPS系统功能的能力.
- 由于新的修改,不寻常的域组织和休眠域,在准确预测NRPS功能方面仍然存在挑战.
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