Figure 7. Proteasome activities WT and HET tissues.

A. Proteasome activities in spleen and thymus. Lysates from the Sp and Th of WT and HET mice were assayed for chymotrypsin-like and trypsin-like proteasome protease activities. Samples were tested in triplicate, and means ± SD are shown. B. HET and WT organs have similar proteasome levels. Lysate proteins from the lung, spleen, thymus, liver and kidney were analyzed for proteasome content according to proteasome β5 subunit levels based on immunoblotting (upper panel). β-actin levels were used to show even loading of lysate proteins (lower panel).