7LY6

Structure of a trans-acting NRPS oxidase, BmdC, involved in bacillamide biosynthesis

7LY6 の概要

• エントリーDOI: 10.2210/pdb7ly6/pdb
• 分子名称: BmdC, NRPS oxidase, GLYCINE, FLAVIN MONONUCLEOTIDE, ... (5 entities in total)
• 機能のキーワード: nonribosomal peptide synthetases bacillamide, flavoprotein
• 由来する生物種: Thermoactinomyces vulgaris
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 38803.64

構造登録者

Fortinez, C.M.,Bloudoff, K.,Schmeing, T.M. (登録日: 2021-03-05, 公開日: 2022-02-02, 最終更新日: 2023-10-18)

主引用文献

Fortinez, C.M.,Bloudoff, K.,Harrigan, C.,Sharon, I.,Strauss, M.,Schmeing, T.M.
Structures and function of a tailoring oxidase in complex with a nonribosomal peptide synthetase module.
Nat Commun, 13:548-548, 2022

PubMed Abstract: Nonribosomal peptide synthetases (NRPSs) are large modular enzymes that synthesize secondary metabolites and natural product therapeutics. Most NRPS biosynthetic pathways include an NRPS and additional proteins that introduce chemical modifications before, during or after assembly-line synthesis. The bacillamide biosynthetic pathway is a common, three-protein system, with a decarboxylase that prepares an NRPS substrate, an NRPS, and an oxidase. Here, the pathway is reconstituted in vitro. The oxidase is shown to perform dehydrogenation of the thiazoline in the peptide intermediate while it is covalently attached to the NRPS, as the penultimate step in bacillamide D synthesis. Structural analysis of the oxidase reveals a dimeric, two-lobed architecture with a remnant RiPP recognition element and a dramatic wrapping loop. The oxidase forms a stable complex with the NRPS and dimerizes it. We visualized co-complexes of the oxidase bound to the elongation module of the NRPS using X-ray crystallography and cryo-EM. The three active sites (for adenylation, condensation/cyclization, and oxidation) form an elegant arc to facilitate substrate delivery. The structures enabled a proof-of-principle bioengineering experiment in which the BmdC oxidase domain is embedded into the NRPS.

PubMed: 35087027
DOI: 10.1038/s41467-022-28221-y

実験手法

X-RAY DIFFRACTION (2.73 Å)