在SARS-CoV-2尖蛋白S1子单元和热冲击蛋白70 70之间的相互作用
Jingwen Li1, Chenang Lyu1, Ran An1
1Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
Food and environmental virology
|April 18, 2024
概括
的热冲击蛋白70 (oHSP70) 结合SARS-CoV-2尖端蛋白S1,类似于人类的ACE2. 这种相互作用对于理解贝类中的病毒生物积累和开发检测方法至关重要.
科学领域:
- 环境科学 环境科学
- 病毒学 病毒学
- 生物化学 生物化学
背景情况:
- 严重急性呼吸系统综合征冠状病毒2 (SARS-CoV-2) 已在海洋环境中检测到.
- 过的贝类,如太平洋,可以生物积累SARS-CoV-2.
- 热冲击蛋白70 (oHSP70) 是SARS-CoV-2的尖蛋白S1亚单元 (rS1) 的潜在结合受体.
研究的目的:
- 为了研究复合oHSP70 (roHSP70) 和SARS-CoV-2rS1.1.之间的结合相互作用.
- 确定roHSP70对rs1的亲和力,并将其与已知的相互作用进行比较.
- 确定roHSP70中参与rS1结合的关键区域和氨基酸.
主要方法:
- 基于表面等离子体共振 (SPR) 的Biacore测定测量结合亲和力 (KD).
- 酶相关免疫吸收试验 (ELISA) 进行验证.
- 基于分子对接的切断和突变roHSP70蛋白质的构建和测试.
主要成果:
- 对于rS1 (KD = 20.4 nM),roHSP70的结合亲和力与rS1 (KD = 16.7 nM) 的rACE2相似.
- 所有测试的截断段 (N,C,M) 和roHSP70突变部位都显示出对rS1.1的亲和力显著降低.
- 这些发现表明,roHSP70的多个区域和特定的氨基酸参与与SARS-CoV-2rS1.1.结合.
结论:
- roHSP70对SARS-CoV-2 rS1表现出强烈的结合亲和力,这表明它在中病毒生物积累中的作用.
- 这项研究为了解贝类中SARS-CoV-2吸收提供了理论基础.
- roHSP70可以作为一种潜在的捕获剂来检测环境样本中的SARS-CoV-2.
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