不同小鼠菌株中的DAAO突变部位及其对酶活性的影响
Zhou Yu-Cong1, Fu Sheng-Ling2, Liu Hao3
1College of Biological and Environmental Science, Zhejiang Wanli University, Ningbo, 315000, P. R. China.
The protein journal
|November 2, 2024
概括
研究小鼠的D-氨基酸氧化酶 (DAAO) 突变发现了两个关键的非同义变异 (V64A,R295H),这些变异增强了酶活性和基质亲和力,影响了神经病痛和精神分裂症研究.
科学领域:
- 生物化学 生物化学
- 酶学 是一种酶学.
- 神经科学是一个神经科学.
背景情况:
- D-氨基酸氧化酶 (DAAO) 的活性与神经疾病如神经病痛和精神分裂症有关.
- 了解DAAO的遗传变异对于阐明它在疾病中的作用至关重要.
研究的目的:
- 在不同的小鼠菌株中识别DAAO突变部位.
- 为了研究这些突变对DAAO酶活性和动力学的影响.
主要方法:
- 为异质DAAO表达构建了一个 prokaryotic表达系统.
- 在C57小鼠中分析了核酸突变,区分了同名和非同名变体.
- 在实验室中确定野生类型和突变小鼠DAAO (mDAAO) 的动力常数和IC50值.
主要成果:
- 在C57小鼠中确定了五种核酸突变,其中两个非同义突变 (exon 2中的V64A,exon 10中的R295H).
- 这些突变 (V64A,R295H) 增加了mDAAO的基质亲和力和催化效率.
- 与Balb/c和其他突变物相比,C57 DAAO的IC50值较低,这表明对CBIO的亲和力更高.
结论:
- 在C57 DAAO中的V64A和R295H突变显著增强了酶活性和基质结合.
- 这些发现为DAAO变异的分子基础及其对神经系统疾病的潜在影响提供了洞察力.
相关概念视频
In-vitro Mutagenesis
13.8K
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
13.8K
Mouse Models of Cancer Study
5.5K
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
5.5K


