6IM8

CueO-PM2 multicopper oxidase

6IM8 の概要

• エントリーDOI: 10.2210/pdb6im8/pdb
• 分子名称: Blue copper oxidase CueO,PM2 peptide,Blue copper oxidase CueO (2 entities in total)
• 機能のキーワード: multicopper oxidase, laccase, oxidoreductase
• 由来する生物種: Escherichia coli (strain K12); 詳細
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 55846.77

構造登録者

Wongsantichon, J.,Robinson, R.,Ghadessy, F. (登録日: 2018-10-22, 公開日: 2019-03-20, 最終更新日: 2023-11-22)

主引用文献

Sana, B.,Chee, S.M.Q.,Wongsantichon, J.,Raghavan, S.,Robinson, R.C.,Ghadessy, F.J.
Development and structural characterization of an engineered multi-copper oxidase reporter of protein-protein interactions.
J.Biol.Chem., 294:7002-7012, 2019

PubMed Abstract: Protein-protein interactions (PPIs) are ubiquitous in almost all biological processes and are often corrupted in diseased states. A detailed understanding of PPIs is therefore key to understanding cellular physiology and can yield attractive therapeutic targets. Here, we describe the development and structural characterization of novel CueO multi-copper oxidase variants engineered to recapitulate protein-protein interactions with commensurate modulation of their enzymatic activities. The fully integrated single-protein sensors were developed through modular grafting of ligand-specific peptides into a highly compliant and flexible methionine-rich loop of CueO. Sensitive detection of diverse ligand classes exemplified by antibodies, an E3 ligase, MDM2 proto-oncogene (MDM2), and protease (SplB from ) was achieved in a simple mix and measure homogeneous format with visually observable colorimetric readouts. Therapeutic antagonism of MDM2 by small molecules and peptides in clinical development for treatment of cancer patients was assayed using the MDM2-binding CueO enzyme. Structural characterization of the free and MDM2-bound CueO variant provided functional insight into signal-transducing mechanisms of the engineered enzymes and highlighted the robustness of CueO as a stable and compliant scaffold for multiple applications.

PubMed: 30770473
DOI: 10.1074/jbc.RA118.007141

実験手法

X-RAY DIFFRACTION (1.801 Å)