从白斑综合征病毒中获得的thymidylate synthase对联体相互作用的结构洞察力
Changshui Liu1, Kun Zang2, Qingjun Ma3
1CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China.
Biochemical and biophysical research communications
|March 26, 2025
概括
对白斑综合征病毒乙基酸合成酶 (wTS) 的结构洞察力揭示了与TS的关键差异. 这项比较研究有助于设计特定的抑制剂来对抗WSSV,这是对产业的主要威胁.
科学领域:
- 结构生物学 结构生物学
- 病毒学 病毒学
- 生物化学 生物化学
背景情况:
- 白斑综合征病毒 (WSSV) 在全球养殖业造成了重大经济损失.
- 病毒基酸合成酶 (wTS) 对WSSVDNA复制和扩散至关重要,使其成为潜在的药物标.
研究的目的:
- 阐明 wTS 功能和抑制的结构基础.
- 为 wTS 特定抑制剂的合理设计提供结构信息.
主要方法:
- 使用X射线晶体学来确定与dUMP和dUMP/raltitrexed复合的wTS的结构.
- 在wTS和甲基酸合成酶 (TS) 之间进行比较结构分析.
主要成果:
- wTS-dUMP和wTS-dUMP-raltitrexed复合物的晶体结构分别以2.28 Å和1.43 Å的分辨率得到解决.
- wTS形成一个同质体,由两种单体组成的联体结合腔.
- 与TS相比,wTS-raltitrexed复合体显示出更紧密的闭合形状,raltitrexed,dUMP和wTS之间有广泛的相互作用,导致共价键的形成.
结论:
- 结构性比较分析突出了wTS和TS之间的差异,特别是在raltitrexed-bound状态下.
- 这些结构上的区别为开发选择性wTS抑制剂提供了机会.
- 这些发现支持针对WSSV的向抗病毒疗法的开发.
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