Fig. 3

NaAsO₂ induces TMEM55B phosphorylation and PLEKHM1 ubiquitination.

a U2OS cells were treated with or without NaAsO₂ (300 μM) for 2 h. Cell lysates and samples immunoprecipitated with anti-TMEM55B antibody were incubated with or without Lambda phosphatase. The results are representative of three independent experiments. b Quantification of immunoblots shown in (a). The data represent means ± SEM, n = 3 independent experiments. Statistical significance was determined by using two-tailed unpaired t test. c U2OS cells were treated with NaAsO₂ (300 μM), H₂O₂ (500 μM), Acrolein (200 μM) or Spermidine (300 μM) as indicated times. The results are representative of two independent experiments. d U2OS cells transfected with plasmids encoding PLEKHM1-Flag were treated with or without NaAsO₂ (300 μM) for 2 h and immunoprecipitated with Flag beads. The results are representative of three independent experiments. e U2OS cells were treated with or without NaAsO₂ (300 μM) for 2 h and immunoprecipitated with anti-PLEKHM1 antibody. The results are representative of two independent experiments. f U2OS cells were treated with NaAsO₂ (300 μM) for 2 h and immunoprecipitated with anti-PLEKHM1 antibody under denaturing conditions. The results are representative of three independent experiments. g U2OS cells were treated with NaAsO₂ (300 μM) for indicated times and analyzes by immunoblot with the indicated antibodies. The results are representative of three independent experiments. h Quantification of immunoblots shown in (g). The data represent means ± SEM, n = 3 independent experiments. Statistical significance was determined by using one-way ANOVA with Dunnett’s multiple comparisons. Source data are provided as a Source Data file.