NRG1-β1

• Accession Number :

  NP_039250

• Expression Region :

  S177-E241

• Expression System :

  E coli

• Tag :

  Tag free

• Stability :

  36 months at -20°C to -80°C in lyophilized state 6 months at -20°C to -80°C under sterile conditions after reconstitution 7-10 days at 2°C to 8°C under sterile conditions after reconstitution Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

• Endotoxin :

  ≤10 EU/mg

• Purity :

  ≥ 95% as determined by SDS-PAGE

• Activity :

  Measured in a cell proliferation assay using MCF-7 breast cancer cell line.The ED50 for this effect is 1-8 ng/mL.

• Reconstitution :

  It is recommended to redissolve in sterile deionized water

• Molecular Weight :

  7.5 kDa

• Shipping Conditions :

  Blue Ice

• Appearance :

  White powder, Colorless clear liquid after reconstitution

• Formulation :

  Lyophilized from a 0.22 μm-filtered solution containing 10mM PB, 5% Trehalose and 0.01% Tween 80, pH7.4

• Species :

  Human