Protein structure, amino acid composition and sequence determine proteome vulnerability to oxidation-induced damage

© 2020 The Authors. Published under the terms of the CC BY NC ND 4.0 license..

Oxidative stress alters cell viability, from microorganism irradiation sensitivity to human aging and neurodegeneration. Deleterious effects of protein carbonylation by reactive oxygen species (ROS) make understanding molecular properties determining ROS susceptibility essential. The radiation-resistant bacterium Deinococcus radiodurans accumulates less carbonylation than sensitive organisms, making it a key model for deciphering properties governing oxidative stress resistance. We integrated shotgun redox proteomics, structural systems biology, and machine learning to resolve properties determining protein damage by γ-irradiation in Escherichia coli and D. radiodurans at multiple scales. Local accessibility, charge, and lysine enrichment accurately predict ROS susceptibility. Lysine, methionine, and cysteine usage also contribute to ROS resistance of the D. radiodurans proteome. Our model predicts proteome maintenance machinery, and proteins protecting against ROS are more resistant in D. radiodurans. Our findings substantiate that protein-intrinsic protection impacts oxidative stress resistance, identifying causal molecular properties.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:39

Enthalten in:

The EMBO journal - 39(2020), 23 vom: 01. Dez., Seite e104523

Sprache:

Englisch

Beteiligte Personen:

Chang, Roger L [VerfasserIn]
Stanley, Julian A [VerfasserIn]
Robinson, Matthew C [VerfasserIn]
Sher, Joel W [VerfasserIn]
Li, Zhanwen [VerfasserIn]
Chan, Yujia A [VerfasserIn]
Omdahl, Ashton R [VerfasserIn]
Wattiez, Ruddy [VerfasserIn]
Godzik, Adam [VerfasserIn]
Matallana-Surget, Sabine [VerfasserIn]

Links:

Volltext

Themen:

Bacterial Proteins
Deinococcus radiodurans
Journal Article
Oxidative stress
Protein carbonyl
Proteome
Radioresistance
Reactive Oxygen Species
Research Support, Non-U.S. Gov't
Structural systems biology

Anmerkungen:

Date Completed 12.04.2021

Date Revised 12.04.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.15252/embj.2020104523

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM316428108