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Sulfhydration mediates neuroprotective actions of parkin. | LitMetric

AI Article Synopsis

Article Abstract

Increases in S-nitrosylation and inactivation of the neuroprotective ubiquitin E3 ligase, parkin, in the brains of patients with Parkinson's disease are thought to be pathogenic and suggest a possible mechanism linking parkin to sporadic Parkinson's disease. Here we demonstrate that physiologic modification of parkin by hydrogen sulfide, termed sulfhydration, enhances its catalytic activity. Sulfhydration sites are identified by mass spectrometry analysis and are investigated by site-directed mutagenesis. Parkin sulfhydration is markedly depleted in the brains of patients with Parkinson's disease, suggesting that this loss may be pathologic. This implies that hydrogen sulfide donors may be therapeutic.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3622945PMC
http://dx.doi.org/10.1038/ncomms2623DOI Listing

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