Table 1 Summary of sex differences in the protein expression of Complex I (CI), Complex II (CII), ATP synthase (CV), VDAC1, UCP1, UCP2, UCP3, UCP4, α-actin, and β-actin measured in the brain, brown adipose tissue (BAT), skeletal muscle (SkM), and spleen tissue. Protein expression was compared between female and male mice at an age of one (1 m), five (5 m) and ten months (10 m) and is presented as ratios female/male (red) or male/female (blue). n. a. stands for not applicable. “-” indicates no or very small difference (1 < R < 1.1) in expression between female and male mice; ♀ (♂)—for R between 1.2 and 1.5; ♀♀ (♂♂)—for R between 1.6 and 2.0; and ♀♀♀ (♂♂♂)—over 2.00
