Journal
ACS CHEMICAL BIOLOGY
Volume 14, Issue 6, Pages 1328-1336Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acschembio.9b00371
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Funding
- National Institutes of Health [RGM114653A]
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Tyrosine nitration has served as a major biomarker for oxidative stress and is present in high abundance in over 50 disease pathologies in humans. While data mounts on specific disease pathways from specific sites of tyrosine nitration, the role of these modifications is still largely unclear. Strategies for installing site-specific tyrosine nitration in target proteins in eukaryotic cells, through routes not dependent on oxidative stress, would provide a powerful method to address the consequences of tyrosine nitration. Developed here is a Methanosarcina barkeri aminoacyl-tRNA synthetase/tRNA pair that efficiently incorporates nitro-tyrosine site-specifically into proteins in mammalian cells. We demonstrate the utility of this approach to produce nitrated proteins identified in disease conditions by producing site-specific nitroTyr-containing manganese superoxide dismutase and 14-3-3 proteins in eukaryotic cells.
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