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Structural studies of Baeyer-Villiger monooxygenases

Baeyer-Villiger 单加氧酶的结构研究

基本信息

批准号：
183867-2013
负责人：
Berghuis, Albert
金额：
$ 2.48万
依托单位：
McGill University
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2015
资助国家：
加拿大
起止时间：
2015-01-01 至 2016-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569665
关键词：
Structural studies Baeyer Villiger monooxygenases

项目摘要

Drugs are complex molecules that have very specific shapes. Pharmaceutical industry has been making these drugs using chemical reactions that frequently use toxic solvents and invariably create substantial waste. To address these issues that have environmental and financial implications, "green-chemistry" alternatives have been explored. One such alternative, is the use of "biocatalysts", i.e. enzymes that catalyze chemical reactions without the use of toxic solvents and that do not create excessive waste. Specifically, much attention has focused on "Baeyer-Villiger monooxygenases". Baeyer-Villiger monooxygenases are a class of enzymes found in bacteria that catalyze a type of reaction that is commonplace in the pharmaceutical industry. Employing these enzymes in an industrial setting will avoid the use of chlorinated solvents and acids, while limiting the amount of waste product produced. We have recently determined what these enzymes look like in atomic detail, using a method known as X-ray diffraction. Also, we have begun to examine how the atomic structure of these enzymes dictates their catalytic properties. Intriguingly, our initial studies have shown that the shape of the enzymes actually changes while they catalyze chemical reactions. We will continue to examine in atomic detail how Baeyer-Villiger monooxygenases catalyze chemical reactions, and how the changing shape facilitates this. This information will enable us to optimize these enzymes for very specific tasks that are of benefit to the pharmaceutical industry.

药物是具有非常特殊形状的复杂分子。制药工业一直使用化学反应来制造这些药物，这些化学反应经常使用有毒溶剂，并且总是产生大量的废物。为了解决这些具有环境和财政影响的问题，已探索了“绿色化学”替代品。一种这样的替代方法是使用“生物催化剂”，即催化化学反应而不使用有毒溶剂并且不产生过量废物的酶。具体地，许多注意力集中在“Baeyer-Villiger单加氧酶”上。Baeyer-Villiger单加氧酶是在细菌中发现的一类酶，其催化制药工业中常见的一种反应。在工业环境中使用这些酶将避免使用氯化溶剂和酸，同时限制产生的废物量。我们最近已经确定了这些酶在原子细节上的样子，使用一种称为X射线衍射的方法。此外，我们已经开始研究这些酶的原子结构如何决定它们的催化特性。有趣的是，我们最初的研究表明，酶的形状实际上在催化化学反应时发生了变化。我们将继续研究原子细节如何Baeyer-Villiger单加氧酶催化化学反应，以及如何改变形状促进这一点。这些信息将使我们能够优化这些酶，以完成对制药行业有益的非常具体的任务。