Proteomics utilizes protein sequences, expression, and structure to determine how proteins relate, interact, and function in an organism. Proteomics includes characterizing and cataloguing proteins and protein libraries, comparing variations in protein expression levels under different conditions, and studying protein interactions and functional roles. Proteomic techniques are performed in an automated, large-scale manner and may also involve bioinformatic analysis and storage of data.

Proteomics is important to cancer research, therapy and therapy target discovery, and biomarker research.

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