Additional Information
| Product Name: | Rapid 26S Proteasome Purification Kit-S | ||
|---|---|---|---|
| Also Known As: | N/A | ||
| Catalog No.: | J4310 | ||
| Size: | 1 Kit | ||
| Molecular Weight: | N/A | ||
| Species: | N/A | ||
| Source: | N/A | ||
| Stock: | Enzyme stocked in 20 mM Tris, 150 mM NaCl, 2 mM βME, 10% Glycerol; Substrate stocked in DMSO | ||
| Concentration: | See tube label | ||
| Quality Assurance: | Enzyme >95% by SDS-PAGE; Substrate > 98% by HPLC and NMR | ||
| Storage: | Store at -80°C; avoid multiple freeze-thaw cycles | ||
| PDF Data Sheet: | PDF datasheet, MSDS | ||
| NCBI RefSeq: | N/A | ||
| Image(s): | (Click image to enlarge)
|
||
| Shipping Method: | Dry ice shipping | ||
| References: | 1. Besche HC, Haas W, Gygi SP, Goldberg AL. Biochemistry. 2009; 48:2538-49. 2. Elsasser S, Schmidt M, Finley D. Methods Enzymol. 2005; 398:353-63. 3. Kisselev AF, Goldberg AL. Methods Enzymol. 2005; 398:364-78. |
Details
* This kit is sufficient for purification of the 26S proteasome from 50 mg or 5 X 10 mg cell or tissue extracts at a concentration of 5 mg/ml. Usually, 1-2% of total cellular proteins are the 26S proteasome.
Description
The Rapid 26S Proteasome Purification Kit is designed to rapidly purify the endogenous 26S proteasome from cell or tissue extracts within 8 hours according to a published method (reference 1) with modifications. This approach uses the N-terminal ubiquitin-like (Ubl) domain of human RAD23B as an affinity bait, which allows the rapid and gentle isolation of endogenous 26S proteasomes. The bound 26S proteasome is subsequently eluted using the C-terminal two ubiquitin-interacting motifs (UIM) of human S5a.
Components
• GST-Ubl (4 mg/ml)...................................................0.6 ml
• GST (4 mg/ml)..........................................................0.5 ml
• 6xHis-UIM (4 mg/ml).............................................. 0.2 ml
• 20X Lysis Buffer........................................................1.2 ml
• NaCl (1M)..............................................................0.5 ml
• ATP (500mM)............................................................0.1 ml
• SUC-LLVY-AMC (50 mM)..........................................10 µl
• Glutathione Agarose Resin (50% slurry)...........1.5 ml
• Nickel XPure Agarose Resin (50% slurry)..........1.0 ml
Images
(Click image to enlarge)
A. Coomassie stained SDS-PAGE of 5 μg purified GST-Ubl.
B. Coomassie stained SDS-PAGE of 5 μg purified 6xHis-UIM.
C. Coomassie stained SDS-PAGE of 3 μg purified human 26S proteasomes.
D. Coomassie stained native-PAGE of 3 μg purified human 26S proteasomes.
E. Solution peptidase assay of the purified human 26S proteasome. 150 μl reaction mixtures contained 10 nM purified human 26S proteasome in 50 μM SUC-LLVY-AMC in 20 mM Tris, pH 7.1 at 37°C, 2 mM μME. The released AMC fluorescence was measured using a plate reader with excitation and emission filters at 360/40 and 460/30 nm, respectively. This assay was used to monitor the chymotrypsin-like activity of the 26S proteasome. (Click image to enlarge)
| Schematic of 26S proteasome enrichment |
 |
