USP26 binds to and deubiquitinates SMAD7

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USP26 binds to and deubiquitinates SMAD7 USP26 binds to and deubiquitinates SMAD7 293T cells were transfected as indicated with GFP‐USP26 and Flag‐tagged SMAD3 and SMAD7. After 48 h, cells were lysed and immunoprecipitated with anti‐Flag affinity resin. Whole‐cell extracts were probed with the indicated antibodies.293T cells were transfected with GFP‐USP26, and cells were lysed and immunoprecipitated with anti‐GFP affinity resin. Whole‐cell extracts were probed for SMAD3.293T cells were transfected as indicated with GFP‐USP26 and Flag‐tagged SMAD7. After 48 h, cells were treated with TGF‐β for 1 h and lysed. Flag‐tagged proteins were immunoprecipitated with anti‐Flag affinity resin and whole‐cell extracts were probed with the indicated antibodies.293T cells were transfected as indicated with GFP‐USP26 and Flag‐tagged SMAD6. After 48 h, cells were treated with TGF‐β and lysed. Flag‐tagged proteins were immunoprecipitated with anti‐Flag affinity resin and whole‐cell extracts were probed with the indicated antibodies.293T cells transfected with FL‐SMAD7, GFP‐USP26, control vector, and HA‐tagged ubiquitin. Following immunoprecipitation of SMAD7, lysates were resolved by SDS–PAGE and probed with the indicated antibodies.Endogenous ubiquitination assay. 293T cells transfected with FL‐SMAD7, GFP‐USP26, or control vector. Following immunoprecipitation of SMAD7, lysates were resolved by SDS–PAGE and probed with the indicated antibodies.293T cells were transfected as indicated with GFP‐USP26, Flag‐tagged SMAD7, and Myc‐tagged SMURF2. After 48 h, cells were lysed and immunoprecipitated with anti‐Flag affinity resin overnight, eluted with anti‐Flag peptide, and re‐immunoprecipitated with anti‐Myc affinity resin. Whole‐cell extracts were probed with the indicated antibodies.293T cells were transfected as indicated with GFP‐USP26, HA‐tagged SMAD7, and Myc‐tagged SMURF1. After 48 h, cells were lysed and immunoprecipitated with anti‐Flag affinity resin overnight, cleaved with an anti‐Flag peptide, and re‐immunoprecipitated with anti‐Myc affinity resin. Whole‐cell extracts were probed with the indicated antibodies. Source data are available online for this figure. Sarah Kit Leng Lui et al. EMBO Rep. 2017;embr.201643270 © as stated in the article, figure or figure legend