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. 2012 Jan 24;287(12):9269–9279. doi: 10.1074/jbc.M111.316208

FIGURE 4.

FIGURE 4.

Differential effects of base-specific chaperones on proteasome assembly with Walker A mutant Rpts. A–D, immunoblotting analysis of FLAG-Rpt samples following coexpression of base-specific chaperones. HeLa cells expressing wild-type or Walker A mutant FLAG-Rpt1 (A), Rpt6 (B), Rpt3 (C), and Rpt5 (D) were transfected with the expression constructs of HA-tagged S5b, PAAF1, Gankyrin, and p27, respectively. After affinity purification of FLAG-tagged proteins in the presence of 5 mm ATP, the samples were analyzed by immunoblotting with indicated antibodies.