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Recombinant Human Ataxin-3/ATXN3 protein (His tag)
SKU: PDEH100314-100
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Recombinant Human Ataxin-3/ATXN3 protein (His tag)
| SKU # | PDEH100314 |
| Expression Host | E. coli |
Description
| Synonyms | Ataxin-3;ATXN3;Machado-Joseph disease protein1;Spinocerebellar ataxia type 3 protein |
| Species | Human |
| Expression_host | E.coli |
| Sequence | Met 1-Lys 370 |
| Accession | P54252-2 |
| Mol_Mass | 40.6 kDa |
| AP_Mol_Mass | 50 kDa |
| Tag | N-His & C-His |
| Bio_Activity | Not validated for activity |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin level | Please contact us for more information. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis |
Background
Ataxin-3 is a ubiquitously expressed nuclear protein that serves as a deubiquitinating enzyme (DUB) involved in protein homeostasis and quality control, myogenesis and degradation of misfolded chaperone substrates. As a DUB, it has two distinct features. Its N-terminal Josephin domain confers cysteine protease activity to Ataxin-3 which is important for hydrolyzing ubiquitin (Ub) linkages. The second important feature is its three Ub-interacting motifs (UIMs) through which it binds Ub conjugates and ubiquitinated proteins and bring them into proximity to trim or edit specific linkages within these Ub conjugates. It binds long poly-Ub chains and trims them. However, it has weak or no activity against chains of 4 or less Ub.