在Litopenaeus vannamei的多氧化酶表达及其特征
Qian Hong1, Yu-Lei Chen1, Duanquan Lin1
1College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China.
Food chemistry
|September 1, 2023
概括
来自的多氧化酶 (PPO) 被克隆并表达以了解其特性. 这项研究有助于研究的黑色素病并提高海鲜的质量.
科学领域:
- 生物化学 生物化学
- 水产养殖是水产养殖的一种方式.
- 酶学 是一种酶学.
背景情况:
- 多氧化酶 (PPO) 显著降低了的质量.
- 了解PPO的酶特性对于的质量控制至关重要.
研究的目的:
- 克隆和表达来自Litopenaeus vannamei (Lv-PPO) 的活跃PPO.
- 为了描述重组Lv-PPO (rLv-PPO) 的酶性质.
- 开发一种用于检测中PPO分布的抗体.
主要方法:
- 在大肠杆菌中基因克隆和基因表达.
- 使用亲和系列色谱进行净化.
- 酶活性测定,LC-MS/MS和西部斑点分析.
主要成果:
- Lv-PPO基因 (2076 bp) 编码了一个691氨基酸蛋白.
- ~85.0kDa的重组Lv-PPO (rLv-PPO) 已成功表达和验证.
- 在40°C和pH值6.0时观察到最佳活性;金属离子 (Cu2+, Zn2+) 影响了酶结构和活性.
- 在血淋巴中,PPO最为丰富,其次是telson, carapace 和 eyestalk.
结论:
- 对rLv-PPO的表征提供了对黑色素病的见解.
- 这项研究有助于未来研究PPO在质量下降中的作用.
- 开发出的抗体是PPO局部化研究的宝贵工具.
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