Human SMURF1 (GenBank Accession No. NM_020429), a.a. 150-end, with N-terminal FLAG-tag, MW= 70 kDa, expressed in a Baculovirus infected Sf9 cell expression system.

Q9HCE7

SMAD specific E3 ubiquitin protein ligase 1, SMURF1

10 uL of reaction mixture contains 50 mM Tris, pH 7.4, 5 mM MgCl2, 0.01% Tween, 1 mM DTT, 0.2 µM Ub[Biotin], 50 nM Ube1, 1 mM ATP, 0.25 µM of UBCH5b, and various amount of smurf1. The reaction was initiated with the addition of ATP, and incubated at 30C for 3 hours. Tb labeled anti-Flag antibody donor and xl665 labeled acceptor was added and incubated at room temperature for hour.

40 mM Tris-HCl pH 8.0, 110 mM NaCl, 2.2 mM KCl, 0.04% Tween-20, 3 mM DTT, and 20% glycerol.

Aqueous buffer solution

At least 6 months at –80°C. Avoid freeze/thaw cycles. Protein may be diluted to ≥ 100 µg/ml in PBS + glycerol and stored at -80°C.

Useful in conjunction with E1 and E2 for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.

1. Narimatsu M. et al., Cell 137 (2), 295-307 (2009)
2. Fukunaga E. et al., J. Biol. Chem. 283 (51), 35660-35667 (2008).

Avoid freeze/thaw cycles

Ubiquitin E3 ligase

Recombinant Protein