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    New England Biolabs amylose
    Smurf1 interacts with <t>Kindlin-2</t> in vivo and in vitro. (A) HEK293T cells were transfected with Flag-Kindlin-2. 48 h after transfection, cell lysates were immunoprecipitated with an anti-Flag antibody or normal IgG followed by immunoblotting using Smurf1 antibody. (B) The endogenous interaction between Kindlin-2 and Smurf1 was analyzed by coIP. (C) Fusion protein <t>His-MBP-Kindlin-2</t> was incubated with GST or GST-Smurf1 in vitro for MBP pull-down assays. Affinity matrices for MBP were used. (D) HEK293T cells were cotransfected with Flag-Smurf2 and GFP-Kindlin-2. 48 h after transfection, cell lysates were immunoprecipitated with anti-Flag antibody followed by immunoblotting using GFP antibody. (E) Colocalization of endogenous Smurf1 and Kindlin-2 was analyzed by immunofluorescence staining. The image was merged. Bars, 10 µm. (F) Indicated truncates of Smurf1 and Kindlin-2 were constructed according to their functional domains. (G and H) HEK293T cells were transfected with the indicated truncates of Smurf1. Cell lysates were immunoprecipitated with anti-Flag antibody (G) or Kindlin-2 antibody (H) followed by immunoblotting using an anti–Kindlin-2 (G) or Myc (H) antibody. (I) HEK293T cells were transfected with the indicated truncates of GFP-Kindlin-2. Cell lysates were then incubated with GST or GST-Smurf1 in vitro for GST pull-down assays followed by immunoblotting using an anti-GFP antibody. (J) HEK293T cells were transfected with the indicated truncates of Flag-Kindlin-2, and cell lysates were immunoprecipitated with anti-Flag antibody followed by immunoblotting using anti-Myc antibody. (K) The PY motif mutant of Kindlin-2 or Kindlin-2 WT was cotransfected with Smurf1 into HEK293T cells. CoIP was performed with an anti-Flag antibody followed by immunoblotting using an anti-Myc antibody.
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    Smurf1 interacts with Kindlin-2 in vivo and in vitro. (A) HEK293T cells were transfected with Flag-Kindlin-2. 48 h after transfection, cell lysates were immunoprecipitated with an anti-Flag antibody or normal IgG followed by immunoblotting using Smurf1 antibody. (B) The endogenous interaction between Kindlin-2 and Smurf1 was analyzed by coIP. (C) Fusion protein His-MBP-Kindlin-2 was incubated with GST or GST-Smurf1 in vitro for MBP pull-down assays. Affinity matrices for MBP were used. (D) HEK293T cells were cotransfected with Flag-Smurf2 and GFP-Kindlin-2. 48 h after transfection, cell lysates were immunoprecipitated with anti-Flag antibody followed by immunoblotting using GFP antibody. (E) Colocalization of endogenous Smurf1 and Kindlin-2 was analyzed by immunofluorescence staining. The image was merged. Bars, 10 µm. (F) Indicated truncates of Smurf1 and Kindlin-2 were constructed according to their functional domains. (G and H) HEK293T cells were transfected with the indicated truncates of Smurf1. Cell lysates were immunoprecipitated with anti-Flag antibody (G) or Kindlin-2 antibody (H) followed by immunoblotting using an anti–Kindlin-2 (G) or Myc (H) antibody. (I) HEK293T cells were transfected with the indicated truncates of GFP-Kindlin-2. Cell lysates were then incubated with GST or GST-Smurf1 in vitro for GST pull-down assays followed by immunoblotting using an anti-GFP antibody. (J) HEK293T cells were transfected with the indicated truncates of Flag-Kindlin-2, and cell lysates were immunoprecipitated with anti-Flag antibody followed by immunoblotting using anti-Myc antibody. (K) The PY motif mutant of Kindlin-2 or Kindlin-2 WT was cotransfected with Smurf1 into HEK293T cells. CoIP was performed with an anti-Flag antibody followed by immunoblotting using an anti-Myc antibody.

    Journal: The Journal of Cell Biology

    Article Title: Smurf1 inhibits integrin activation by controlling Kindlin-2 ubiquitination and degradation

    doi: 10.1083/jcb.201609073

    Figure Lengend Snippet: Smurf1 interacts with Kindlin-2 in vivo and in vitro. (A) HEK293T cells were transfected with Flag-Kindlin-2. 48 h after transfection, cell lysates were immunoprecipitated with an anti-Flag antibody or normal IgG followed by immunoblotting using Smurf1 antibody. (B) The endogenous interaction between Kindlin-2 and Smurf1 was analyzed by coIP. (C) Fusion protein His-MBP-Kindlin-2 was incubated with GST or GST-Smurf1 in vitro for MBP pull-down assays. Affinity matrices for MBP were used. (D) HEK293T cells were cotransfected with Flag-Smurf2 and GFP-Kindlin-2. 48 h after transfection, cell lysates were immunoprecipitated with anti-Flag antibody followed by immunoblotting using GFP antibody. (E) Colocalization of endogenous Smurf1 and Kindlin-2 was analyzed by immunofluorescence staining. The image was merged. Bars, 10 µm. (F) Indicated truncates of Smurf1 and Kindlin-2 were constructed according to their functional domains. (G and H) HEK293T cells were transfected with the indicated truncates of Smurf1. Cell lysates were immunoprecipitated with anti-Flag antibody (G) or Kindlin-2 antibody (H) followed by immunoblotting using an anti–Kindlin-2 (G) or Myc (H) antibody. (I) HEK293T cells were transfected with the indicated truncates of GFP-Kindlin-2. Cell lysates were then incubated with GST or GST-Smurf1 in vitro for GST pull-down assays followed by immunoblotting using an anti-GFP antibody. (J) HEK293T cells were transfected with the indicated truncates of Flag-Kindlin-2, and cell lysates were immunoprecipitated with anti-Flag antibody followed by immunoblotting using anti-Myc antibody. (K) The PY motif mutant of Kindlin-2 or Kindlin-2 WT was cotransfected with Smurf1 into HEK293T cells. CoIP was performed with an anti-Flag antibody followed by immunoblotting using an anti-Myc antibody.

    Article Snippet: To detect the direct binding of Kindlin-2 with Smurf1, GST or GST-smurf1 was immobilized on GST 4B beads and washed, then beads were incubated with His-MBP-Kindlin-2 purified by MBP Affinity Matrix (Amylose Resin; New England Biolabs, Inc.) or His-Select HF Nickel Affinity Gel for 12 h at 4°C under rotation.

    Techniques: In Vivo, In Vitro, Transfection, Immunoprecipitation, Co-Immunoprecipitation Assay, Incubation, Immunofluorescence, Staining, Construct, Functional Assay, Mutagenesis

    hIRE1α cLD shows preference for arginines and aromatic residues. ( A ) Comparison of the amino acid preferences of MBP-hIRE1α cLD (blue) and His 10 -BiP (gray) with the amino acid composition of all peptides displayed on the array (total, black). The frequency of each amino acid present in peptides with top 10% binding score is shown for hIRE1α cLD and BiP. The experimental error is calculated from three experimental replicates. Blue stars depict the amino acids that are significantly enriched or depleted in hIRE1α cLD binders (p

    Journal: eLife

    Article Title: An unfolded protein-induced conformational switch activates mammalian IRE1

    doi: 10.7554/eLife.30700

    Figure Lengend Snippet: hIRE1α cLD shows preference for arginines and aromatic residues. ( A ) Comparison of the amino acid preferences of MBP-hIRE1α cLD (blue) and His 10 -BiP (gray) with the amino acid composition of all peptides displayed on the array (total, black). The frequency of each amino acid present in peptides with top 10% binding score is shown for hIRE1α cLD and BiP. The experimental error is calculated from three experimental replicates. Blue stars depict the amino acids that are significantly enriched or depleted in hIRE1α cLD binders (p

    Article Snippet: MBP-IRE1 cLD constructs were purified on an MBP-amylose resin (New England Biolabs) and eluted with 10 mM amylose in Elution Buffer (50 mM HEPES pH 7.2, 150 mM NaCl, 4 mM DTT) after washing the column with 20 column volumes of Lysis Buffer.

    Techniques: Binding Assay