We created a hypermethylated DIA assay library by DDA acquisitions of 6 SCX fractions from Gnmt -/- mouse livers. We supplemented this library with a DDA acquisition of a methyl-Lys immunoprecipitation from a hepatoma cell line derived from Gnmt -/- mice. This gave us an assay library of 808 methyl Arg and Lys peptides. We further supplemented this library with a DDA acquisition of a ‘one-pot’ acetyl-Lys and succinyl-Lys immunoaffinity enrichment of liver mitochondrial extract and whole liver lysate which provided us with 2428 succinylated peptides and 2547 acetylated peptides. The Skyline and OpenSWATH assay libraries normalized to ‘indexed’ retention time space are avaliable here for further studies.