With carrier: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 20 μg BSA per 1 μg mIL-1β. Carrier free: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2.
Stable in lyophilized state at -20°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles.
Maintain sterility. Storage at -20°C should be in a manual defrost freezer.
|Purity||>98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant mIL-1β. All lots are greater than 98% pure.|
|Endotoxin||Less than 0.01 ng endotoxin/1 μg mIL-1β.|
|Activity||The bioactivity of recombinant mIL-1β was determined by its ability to induce mouse IL-6 production by 3T3 MEFs WT. The ED50 of each lot is between 5-20 pg/ml.|
|Molecular Formula||Recombinant mIL-1β has a Met on the amino terminus and has a calculated MW of 17,525. DTT-reduced and non-reduced protein migrate as 18 kDa polypeptides. The expected amino-terminal MVPIR of recombinant mIL-1β was verified by amino acid sequencing.|
Recombinant mouse IL-1β (mIL-1β) Val118-Ser269 (Accession #NP_032387) was produced in E.coli at Cell Signaling Technology.
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