Frozen mouse liver tissue was homogenized in RIPA buffer containing 1x EDTA-free protease inhibitor cocktail (Roche) using Omni Tissue Homogenizer (Omni International). The total protein concentration was determined by Bio-Rad Protein Assay and then equalized to 15 g/L. 25 μg of total protein was used for the western blot assay, performed as previously described (15 (link), 16 (link), 45 (link)). Antibodies used in the western blots are anti-BMAL1 (Cell signaling, #14020), anti-Wee1 (Cell signaling, #4936), and anti-TUBULIN (Sigma-Aldrich, T0198).
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