Fig. 4.

Antioxidant, heat shock protein, and glycolytic enzyme abundances. A) Protein abundances of antioxidant enzymes and heat shock proteins in gastrocnemius muscle by targeted mass spectrometry and SRM. B) Abundances of the proteins involved in glycolysis and fatty acid oxidation in gastrocnemius muscle. Proteins labeled using their respective gene symbols. Old wildtype (grey); old-Nrf2^-/- (black). n = 6. Data are presented as mean ± SEM log₂ fold change relative to young. *p < 0.05 young vs. old or old-Nrf2^-/-. # p < 0.05 old vs. old-Nrf2^-/-.