pan specific deubiquitinase usp2  (Bio-Techne corporation)

Journal: EMBO Reports

Article Title: Parkin drives pS65‐Ub turnover independently of canonical autophagy in Drosophila

doi: 10.15252/embr.202153552

Figure Lengend Snippet: Immunoblots for the indicated antibodies as controls for samples analysed in Fig . pS65‐Ub immunoblot following subcellular fractionation and USP2 treatment as indicated. (1) 10,000 × g pellet; (2) 21,000 × g pellet; (3) 21,000 × g supernatant. Asterisk (*) denotes nonspecific bands.

Article Snippet: For the validation of the pS65‐Ub signal in park −/− samples, 30 μg protein per subcellular fraction was treated with the pan‐specific deubiquitinase USP2 (BostonBiochem, E‐506).

Techniques: Western Blot, Fractionation

Journal: The EMBO Journal

Article Title: Dual roles of HSP70 chaperone HSPA1 in quality control of nascent and newly synthesized proteins

doi: 10.15252/embj.2020106183

Figure Lengend Snippet: Cell lysates were prepared from MCF7 cells maintained at 37°C or heat‐shocked at 42°C for 1 h. Where indicated, lysate from heat‐shocked cells was incubated with recombinant USP2 to remove polyubiquitin chains. Equal amounts of cell lysate were assayed for the levels of the indicated proteins by immunoblotting. A quantification of the levels of K48‐linked polyubiquitin is shown in the bar graph (means ± SD, n = 4, number indicates P value calculated with the two‐stage linear step‐up procedure of Benjamini, Krieger, and Yekutieli). Equal amounts of cell lysate described in (A) were fractionated by sucrose density gradient centrifugation, and K48‐linked polyubiquitin was detected by immunoblotting. Quantification of K48‐linked polyubiquitin across the gradients relative to the levels obtained in MCF7 cells maintained at 37°C (means ± SEM, n = 3). Trypsin‐like proteasome activity determined in the same fractions as in (B). Results are shown relative to the proteasome activity obtained in MCF7 cells maintained at 37°C (means ± SEM, n = 3). Source data are available online for this figure.

Article Snippet: To digest K48‐polyubiquitin chains, the lysate was incubated with 7 μg of recombinant human USP2 catalytic domain protein (Boston Biochem, E‐506) for 1 h at 25°C.

Techniques: Incubation, Recombinant, Western Blot, Gradient Centrifugation, Activity Assay

Journal: The EMBO Journal

Article Title: Dual roles of HSP70 chaperone HSPA1 in quality control of nascent and newly synthesized proteins

doi: 10.15252/embj.2020106183

Figure Lengend Snippet:

Article Snippet: To digest K48‐polyubiquitin chains, the lysate was incubated with 7 μg of recombinant human USP2 catalytic domain protein (Boston Biochem, E‐506) for 1 h at 25°C.

Techniques: Recombinant, Sequencing, Magnetic Beads, Staining, Protease Inhibitor, DNA Purification, Bicinchoninic Acid Protein Assay, Modification, Software, Imaging