Which of the following is not an objective of proteomics research?

• A. Identifying specific gene mutations
• B. Identifying novel proteins as potential new biomarkers for disease
• C. Identifying posttranslational modifications of proteins
• D. Understanding the mechanism of diseases

Answer: (A)

Proteomics focuses on proteins: which ones are present, how much of each is there, how proteins are modified after translation, and how they interact within networks to drive biology and disease. It aims to identify proteins and their variants, quantify them, characterize posttranslational modifications (like phosphorylation or glycosylation), map protein pathways, and discover protein biomarkers that reflect disease states. Understanding disease mechanisms through the lens of protein function and regulation is a central goal.

Identifying specific gene mutations, by contrast, concerns changes in the DNA sequence itself, which is the realm of genomics. Proteomics may reveal the consequences of those mutations at the protein level, but it does not directly identify the genetic variants. That’s why selecting gene mutations is not an objective of proteomics. The other options—discovering novel protein biomarkers, identifying posttranslational modifications, and understanding disease mechanisms—fit proteomics well.