Identification of selenomethionine in selenized yeast using two-dimensional liquid chromatography-mass spectrometry based proteomic analysis

Literature Information

Publication Date 2004-11-22
DOI 10.1039/B414246B
Impact Factor 4.616
Authors

S. McSheehy, J. Kelly, L. Tessier, Z. Mester


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Abstract

Selenium-enriched yeast has been commonly used as a nutritional supplement. Here we describe a protocol used to investigate the metabolic fate of inorganic selenium in yeast. We provide definitive, mass spectrometry based evidence for the non-specific incorporation of selenomethionine in the yeast proteome involving the replacement of about 30% of all methionine with selenomethionine.

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