Journal article

The post-translational modification landscape of commercial beers

Edward D Kerr, Christopher H Caboche, Cassandra L Pegg, Toan K Phung, Claudia Gonzalez Viejo, Sigfredo Fuentes, Mark T Howes, Kate Howell, Benjamin L Schulz

Cold Spring Harbor Laboratory

Abstract

AbstractBeer is one of the most popular beverages worldwide. As a product of variable agricultural ingredients and processes, beer has high molecular complexity. We used DIA/SWATH-MS to investigate the proteomic complexity and diversity of 23 commercial Australian beers. While the overall complexity of the beer proteome was modest, with contributions from barley and yeast proteins, we uncovered a very high diversity of post-translational modifications (PTMs), especially proteolysis, glycation, and glycosylation. Proteolysis was widespread throughout barley proteins, but showed clear site-specificity. Oligohexose modifications were common on lysines in barley proteins, consistent with glycati..

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