In recent years, a number of advancements have been made in the study of entire mitochondrial proteomes in both physiological and pathological conditions. Naturally occurring iodothyronines (i.e., T3 and T2) greatly influence mitochondrial oxidative capacity, directly or indirectly affecting the structure and function of the respiratory chain components. Blue native PAGE (BN-PAGE) can be used to isolate enzymatically active oxidative phosphorylation (OXPHOS) complexes in one step, allowing the clinical diagnosis of mitochondrial metabolism by monitoring OXPHOS catalytic and/or structural features. Protocols for isolating mammalian liver mitochondria and subsequent one-dimensional (1D) BN-PAGE will be described in relation to the impact of thyroid hormones on mitochondrial bioenergetics.
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