{"knowledge_schema": {"broad_category": "Biochemistry \u2192 Post-Translational Modifications \u2192 Protein Lactylation", "refinement": "This problem focuses on identifying specific mass-to-charge (m/z) values that correspond to a modified protein residue, specifically lactylation of lysine.", "specific_scope": "The task involves analyzing recorded m/z values from LC-MS/MS data to determine which values indicate the presence of lactylated lysine in the peptide sequence AVDLTKLIR.", "goal": "Identify the correct m/z values that indicate lactylation of the lysine residue in the given peptide."}, "summary": "This problem involves biochemistry, specifically the identification of post-translational modifications in proteins. The task is to analyze recorded m/z values from LC-MS/MS analysis to determine which values correspond to the lactylation of a lysine residue in the peptide sequence AVDLTKLIR. The goal is to select the correct m/z values that indicate the presence of this modification."}