Recombinant Human His6-USP19 Protein, CF
Recombinant Human His6-USP19 Protein, CF Summary
Recombinant Human His6-USP19 is a ubiquitin-specific deconjugating enzyme. Reaction conditions will need to be optimized for each specific application. We recommend an initial USP19 concentration of 10-100 nM.
Met1 - Arg1290, Contains a C-terminal 6-His tag
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
|Formulation||X mg/ml (X μM) in 50 mM HEPES pH 7.5, 100 mM NaCl, 2 mM TCEP|
|Shipping||The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.|
|Stability & Storage:||Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
Ubiquitin specific processing protease 19 (USP19) is a 146 kDa member of the C19 peptidase family that contains two alpha crystallin domains and one MYND-type zinc finger. USP19 plays a role in the rescue of ER-associated protein degradation (ERAD) substrates such as cystic fibrosis transmembrane conductance regulator (CFTR) delta F508 and T-cell receptor-alpha (TCR alpha ) from proteasomal degradation. USP19 also interacts with the ubiquitin ligases cellular IAP 1 (cIAP1) and cIAP2. Knockdown of USP19 decreases levels of both cIAPs, whereas overexpression of USP19 results in a marked increase in cIAP levels. Although it effectively removes ubiquitin from cIAPs in vitro, USP19 may stabilize cIAP proteins in vivo mainly through deubiquitinase-independent mechanisms. Intriguingly, partial rescue of TCR alpha (but not CFTR delta F508) in the ERAD pathway is also observed using a catalytically dead USP19, suggesting that USP19 exerts a non-catalytic function for select substrates in multiple biological pathways. This recombinant protein contains amino acids a C-terminal 6-His tag.
- Hassink G.C., et al. (2009) EMBO Rep. 10: 755
- Iphöfer, A. et al. (2012) ChemBioChem 13: 1416
- Mei, Y. et al. (2011) J. Biol. Chem. 286: 35380
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