Biosynthesis and Heterologous Production of Vioprolides: Rational Biosynthetic Engineering and Unprecedented 4-Methylazetidine-carboxylic Acid Formation

被引：66

作者：

Yan, Fu ^{[1
,2
]}

Auerbach, David ^{[1
,2
]}

Chai, Yi ^{[1
,2
]}

Keller, Lena ^{[1
,2
]}

Tu, Qiang ^{[1
,2
]}

Huettel, Stephan ^{[3
]}

Glemser, Amelie ^{[3
]}

Grab, Hanusch A. ^{[4
]}

Bach, Thorsten ^{[4
]}

Zhang, Youming ^{[5
]}

Mueller, Rolf ^{[1
,2
]}

机构：

[1] Saarland Univ, Helmholtz Ctr Infect Res, Helmholtz Inst Pharmaceut Res Saarland HIPS, Campus Bldg E8-1, D-66123 Saarbrucken, Germany

[2] Saarland Univ, Dept Pharm, Campus Bldg E8-1, D-66123 Saarbrucken, Germany

[3] Helmholtz Ctr Infect Res, Dept Microbial Drugs, Braunschweig, Germany

[4] Tech Univ Munich, Lehrstuhl Organ Chem 1, Lichtenbergstr 4, D-85747 Garching, Germany

[5] Shandong Univ, Sch Life Sci, State Key Lab Microbial Technol, Helmholtz Joint Inst Biotechnol, Qingdao, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 28期

关键词：

azetidine; biosynthesis; heterologous expression; natural products; vioprolide; GENE-CLUSTER; AZETIDINE-2-CARBOXYLIC ACID; NATURAL-PRODUCTS; EXPRESSION; METHYLATION; ANTIBIOTICS; METHYLTRANSFERASE; PHYTOSIDEROPHORES; GLIDOBACTIN; EPOTHILONES;

D O I：

10.1002/anie.201802479

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Vioprolides are a promising class of anticancer and antifungal lead compounds produced by the myxobacterium Cystobacter violaceus Cbvi35. Previously nothing had been reported about their biosynthesis, including the origin of the unusual 4-methylazetidinecarboxylic acid (MAZ) moiety. We describe the vioprolide biosynthetic gene cluster and solve the production obstacle by expression in three heterologous hosts. Starting from unstable production in the wild type at the single-digit mgL(-1) scale, we developed a stable host that eventually allowed for yields of up to half a gram per liter in fermenters. Gene inactivations coupled with isotope feeding studies identified an S-adenosylmethionine (SAM)-dependent enzyme and a methyltransferase as being responsible for the generation of the MAZ building block by a proposed mechanism unprecedented in bacteria. Furthermore, nonnatural vioprolide derivatives were generated via rational genetic engineering.

引用

页码：8754 / 8759

页数：6

共 48 条

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