6WP7

Avenolide Binding Autoregulator AvaR1

6WP7 の概要

• エントリーDOI: 10.2210/pdb6wp7/pdb
• 分子名称: AvaR1 (2 entities in total)
• 機能のキーワード: transcriptional repressor, dna binding protein
• 由来する生物種: Streptomyces avermitilis
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 109276.08

構造登録者

Kapoor, I.,Olivares, P.J.,Nair, S.K. (登録日: 2020-04-26, 公開日: 2020-06-24, 最終更新日: 2024-10-23)

主引用文献

Kapoor, I.,Olivares, P.,Nair, S.K.
Biochemical basis for the regulation of biosynthesis of antiparasitics by bacterial hormones.
Elife, 9:-, 2020

PubMed Abstract: Diffusible small molecule microbial hormones drastically alter the expression profiles of antibiotics and other drugs in actinobacteria. For example, avenolide (a butenolide) regulates the production of avermectin, derivatives of which are used in the treatment of river blindness and other parasitic diseases. Butenolides and γ-butyrolactones control the production of pharmaceutically important secondary metabolites by binding to TetR family transcriptional repressors. Here, we describe a concise, 22-step synthetic strategy for the production of avenolide. We present crystal structures of the butenolide receptor AvaR1 in isolation and in complex with avenolide, as well as those of AvaR1 bound to an oligonucleotide derived from its operator. Biochemical studies guided by the co-crystal structures enable the identification of 90 new actinobacteria that may be regulated by butenolides, two of which are experimentally verified. These studies provide a foundation for understanding the regulation of microbial secondary metabolite production, which may be exploited for the discovery and production of novel medicines.

PubMed: 32510324
DOI: 10.7554/eLife.57824

実験手法

X-RAY DIFFRACTION (2.4 Å)