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Analysis of Methionine Oxidation in Myosin Isoforms in Porcine Skeletal Muscle by LC-MS/MS Analysis

Jin-Yeon Jeong et al · Springer Nature · 2016

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Author / responsible party
Jin-Yeon Jeong et al
Publisher
Springer Nature
Year
2016
ISSN
2636-0772
ISSN
2636-0772
Language
English
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Abstract The purpose of this study was to analyze oxidized methionines in the myosin isoforms of porcine longissimus thoracis, psoas major, and semimembranosus muscles by liquid chromatography (LC) and mass spectrometry (MS). A total of 836 queries matched to four myosin isoforms (myosin-1, -2, -4, and -7) were analyzed and each myosin isoform was identified by its unique peptides (7.3-13.3). Forty-four peptides were observed from all three muscles. Seventeen peptides were unique to the myosin isoform and the others were common peptides expressed in two or more myosin isoforms. Five were identified as oxidized peptides with one or two methionine sulfoxides with 16 amu of mass modification. Methionines on residues 215 (215), 438 (438), 853 (851), 856 (854), 1071 (1069), and 1106 (1104) of myosin-1 (myosin-4) were oxidized by the addition of oxygen. Myosin-2 had two oxidized methionines on residues 215 and 438. No queries matched to myosin-7 were observed as oxidized peptides. LC-MS/MS allows analysis of the oxidation of specific amino acids on specific residue sites, as well as in specific proteins in the food system.

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APA 7

al, J. Y. J. E. (2016). Analysis of Methionine Oxidation in Myosin Isoforms in Porcine Skeletal Muscle by LC-MS/MS Analysis. https://doi.org/10.5851/kosfa.2016.36.2.254

MLA

al, Jin-Yeon Jeong et. "Analysis of Methionine Oxidation in Myosin Isoforms in Porcine Skeletal Muscle by LC-MS/MS Analysis." 2016. https://doi.org/10.5851/kosfa.2016.36.2.254.

Chicago

al, Jin-Yeon Jeong et. 2016. "Analysis of Methionine Oxidation in Myosin Isoforms in Porcine Skeletal Muscle by LC-MS/MS Analysis.". https://doi.org/10.5851/kosfa.2016.36.2.254.

Harvard

al, J. Y. J. E. 2016, Analysis of Methionine Oxidation in Myosin Isoforms in Porcine Skeletal Muscle by LC-MS/MS Analysis, Springer Nature, available at: https://doi.org/10.5851/kosfa.2016.36.2.254 [Accessed 8 Aug. 2026].

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Title
Analysis of Methionine Oxidation in Myosin Isoforms in Porcine Skeletal Muscle by LC-MS/MS Analysis
Author / contributors
Jin-Yeon Jeong et al
Publisher
Springer Nature
Publication year
2016
ISSN
2636-0772
ISSN
2636-0772
Language
English

Subjects

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protein oxidation; LC-MS/MS; myosin; methionine
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