Figure 5.

Receptor oligomerization by wild-type and mutant E5 proteins. Ba/F3 cells expressing the full-length and truncated forms of the PDGF β receptor were engineered to express the wild-type E5 protein or a mutant protein containing the Asp-to-Val substitution at position 33 (D33V). Detergent extracts were immunoprecipitated with αPRex and immunoblotted with αPR to detect truncated receptor associated with the full-length receptor. Position of receptor species is indicated as described in the legend to Fig. 4.