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Quantitative comparative integrated proteomic and phosphoproteomic analysis of chicken egg yolk proteins under diverse storage temperatures

journal contribution
posted on 2020-01-01, 00:00 authored by H Wang, N Qiu, Y Mine, H Sun, Y Meng, L Bin, Russell KeastRussell Keast
To investigate the alterations of egg yolk protein abundances and their phosphorylation status at different storage temperatures, a comparative quantitative study of unfertilized chicken egg yolk after 15 days of storage at 4 and 37 °C was performed. Altogether, 445 proteins were identified in our study, of which the abundances of 154 proteins were significantly changed when comparing high-temperature storage with low-temperature storage, including 42 up-regulated and 112 down-regulated proteins. In the phosphoproteome, we identified a total of 137 phosphorylated sites on 326 peptides corresponding to 51 proteins. The results showed that the degree of phosphorylation for most egg yolk proteins was enhanced during high-temperature storage. Furthermore, GO analysis indicated that these phosphoproteins of egg yolk may be closely related to the binding, catalysis, and transport functions. The results provide further insights into the effect of storage temperature on egg proteome changes and their phosphorylation level. Moreover, this study can provide a theoretical basis for the improvement of egg quality during storage by phosphorylation modification in the food industry.

History

Journal

Journal of agricultural and food chemistry

Volume

68

Pagination

1157-1167

Location

Washington, D.C.

ISSN

0021-8561

eISSN

1520-5118

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Issue

4

Publisher

American Chemical Society

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