Figure 6.
TRIM32 mediates non-proteolytic ubiquitination of OTULIN. (A) HEK293 cells were transfected with different doses of TRIM32. After 48 h, cell lysates were blotted with the indicated antibodies. (B) OTULIN-FLAG was transfected with wild-type ubiquitin or the indicated mutant into HEK293 cells. After 48 h, cell lysates were immunoprecipitated with anti-FLAG antibody and blotted as indicated.