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Generating the orthogonal pairs of xUB-xUBA6 and xUB-xUBA1
Orthogonal interaction of xUB-xE1 in mammalian cells
Identification of xUB-conjugated proteins
Figure™1In vitro orthogonal reactivity of the xUB-xUba6 and xUB-xUba1 pairs.(a) xUB and wt UB activation by the xE1 and wt E1 enzymes in the ATP-PPi exchange assay. Data are shown as meansPlusMinuss.e.m. (n=3). (b) Formation of UBsimE1 and UBsimE2 thioest
Validation of ezrin and CUGBP1 as Uba6-specific substrates
Figure™3Uba6 is required for polyubiquitination of the RNA binding protein CUGBP1 and the actin-binding protein ezrin.(a) CUGBP1 and ezrin are polyubiquitinated. HEK293 cells were transfected with polyhistidine-HA-tagged ubiquitin (UB), and treated with 1
Figure™4Uba6 negatively controls the stability of CUGBP1 and ezrin by mediating K48-linked polyubiquitination of the proteins.(a) Effects of UBA6 silencing by shRNA (shUBA6), overexpression (OE) of Uba6, or Uba6 overexpression in the shUBA6 background (sh
Uba6 controls acini-like morphogenesis of epithelial cells
Figure™5Uba6 is required for the regulation of subcellular localization of ezrin and formation of epithelial acini in human nontransformed mammary epithelial MCF-10A cells.(a) Immunofluorescence microscopy for ezrin, F-—actin (via phalloidin) and chromoso
Figure™6Silencing of ezrin partially rescues UBA6-deficient MCF-10A cells from perturbed epithelial morphogenesis in 3D culture.Human non-transformed mammary epithelial MCF-10A cells stably expressing the indicated shRNAs were generated by lentiviral tran
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