Proteomics

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S-Sulfenylation regulates non-enzymatic oxidative protein folding


ABSTRACT: The post-translational modification S-Sulfenylation functions as a key sensor of oxidative stress yet the dynamics of sulfenic acids in proteins is largely elusive due to it's fleeting nature. LC-MS/MS analysis has detected the evolution of this modification in oxidative and reducing states.

INSTRUMENT(S): LTQ Orbitrap Velos

ORGANISM(S): Homo Sapiens (human)

SUBMITTER: Steven Lynham  

LAB HEAD: Sergi Garcia-Manyes

PROVIDER: PXD004514 | Pride | 2016-12-23

REPOSITORIES: Pride

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Publications

Protein S-sulfenylation is a fleeting molecular switch that regulates non-enzymatic oxidative folding.

Beedle Amy E M AE   Lynham Steven S   Garcia-Manyes Sergi S  

Nature communications 20160822


The post-translational modification S-sulfenylation functions as a key sensor of oxidative stress. Yet the dynamics of sulfenic acid in proteins remains largely elusive due to its fleeting nature. Here we use single-molecule force-clamp spectroscopy and mass spectrometry to directly capture the reactivity of an individual sulfenic acid embedded within the core of a single Ig domain of the titin protein. Our results demonstrate that sulfenic acid is a crucial short-lived intermediate that dictate  ...[more]

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