揭示了乳酸赛马体超级家族中14种新型的2酸赛马化和表皮化反应
Julian Urdiain-Arraiza1, Amandine Vandenberghe1, Gergana Dimitrova1
1Louvain Institute of Biomolecular Science and Technology (LIBST), UCLouvain, Louvain-La-Neuve, Belgium.
The Journal of biological chemistry
|December 12, 2024
概括
研究人员探索了乳酸种族酶 (LarA) 超级家族,发现了新酶,可异构化广泛的2 - 基酸. 这扩大了我们对这些重要的有机分子及其在生物合成中的作用的理解.
科学领域:
- 生物化学 生物化学
- 酶学 是一种酶学.
- 有机化学 有机化学
背景情况:
- 2-氧酸是自然界中发现的关键有机构建块.
- 乳酸种族酶 (LarA) 超级家族,利用-核酸 (NPN) 辅因子,包括各种种族酶和表皮酶.
- 了解LarA超级家族的全部酶能力对于有机合成和生物研究至关重要.
研究的目的:
- 为了分类学分析乳酸种族酶同类体 (LarAHs) 在生命领域的分布.
- 生物化学描述九个纯化的LARAH,研究它们的基质特异性和催化活性.
- 通过结构分析识别新的酶反应并预测LARAHs的功能.
主要方法:
- 对LARAH序列的分类学分析.
- 九种LARAH酶的过度表达和净化.
- 生物化学测试以确定基质的特异性和反应范围.
- 对AlphaFold结构预测进行比较分析.
主要成果:
- 拉拉AHs表现出比以前已知的更广泛的基质杂交,其中一些特定于甘酸盐或2-基酸盐.
- 识别了新型的酸盐赛马酶,2-基酸盐赛马酶和2 - 葡萄酸盐表酶活动.
- 证明一些LARAHs对多达16种基质进行异构,其中包括14种新发现的2酸种族化/表皮化反应.
- 通过结构预测确定了影响基质特异性的关键残留物.
结论:
- 这项研究显著扩大了LARA超级家族内NPN依赖酶的已知基质范围.
- 发现了新的酶活性和基质特异性,突出显示了超级家族的多功能性.
- 基于结构分析的功能预测提供了对LARAH酶多样性的洞察.
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