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2 protocols using nad dependent deacetylase sirtuin 3 sirt3

1

Comprehensive Protein Expression Analysis

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Western blots were performed as described earlier for oxidative phosphorylation (OXPHOS) electron transport chain complexes I through V (MitoProfile Total OXPHOS Rodent WB Antibody Cocktail; Abcam, Cambridge, MA), NAD-dependent deacetylase sirtuin-1 (Sirt1; Santa Cruz Biotechnology, Santa Cruz, CA), NAD-dependent deacetylase sirtuin-3 (Sirt3; Cell Signaling, Beverly, MA), microsomal triglyceride transfer protein (MTTP; Santa Cruz Biotechnology), apolipoprotein B100 (apoB100; Abcam), fatty acid synthase (FAS, Cell Signaling), acetyl-CoA carboxylase (ACC; Cell Signaling), sterol regulatory element binding protein (SREBP-1c; Santa Cruz Biotechnology), protein kinase B (Akt; Cell Signaling), and phospho-Akt Ser473 (Cell Signaling) (19 (link),27 (link)). Membranes stained with 0.1% amido-black (Sigma-Aldrich) were quantified to control for differences in protein loading or transfer of band densities, as previously described (19 (link)).
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2

Western Blot Analysis of Metabolic Regulators

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Western blot analyses were performed to determine protein content of the following: oxidative phosphorylation (OXPHOS) electron transport chain complexes I through V (MitoProfile Total OXPHOS Rodent WB Antibody Cocktail; Abcam, Cambridge, MA.), peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α; EMD Millipore Corp., Billerica, MA), NAD-dependent deacetylase sirtuin-1 (SIRT1; Santa Cruz Biotechnology, Santa Cruz, CA), NAD-dependent deacetylase sirtuin-3 (SIRT3; Cell Signaling, Beverly, MA), cAMP-responsive Element-binding Protein (CREB and phospho-CREB(Ser133); Cell Signaling), AMP-activated protein kinase(AMPK and phospho-AMPK (Thr 172); Cell Signaling), and cytochrome c (Cell Signaling). Phosphorylation status (using phosphospecific antibodies) was calculated from the density of the phosphoprotein band divided by density of the total protein using the appropriate antibody (30 (link), 31 (link)). Membranes stained with 0.1% amido-black (Sigma) were quantified to control for differences in protein loading or transfer of band densities as previously described (31 (link)).
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