Cat#:RPH-NP239;Product Name:Recombinant Human Interleukin-31 / IL31 Protein;Synonym:Interleukin-31, IL-31, IL31;Description:Recombinant Human Interleukin-31 Protein is produced in E.coli and the target gene encoding Ser24-Thr164 is expressed.;Source:E. coli;AA Sequence:SHTLPVRLLRPSDDVQKIVEELQSLSKMLLKDVEEEKGVLVSQNYTLPCLSPDAQPPNNIHSPAI RAYLKTIRQLDNKSVIDEIIEHLDKLIFQDAPETNISVPTDTHECKRFILTISQQFSECMDLALK SLTSGAQQATT;Purity:Greater than 95% as determined by reducing SDS-PAGE.;Endotoxin:< 0.1 ng/µg (1 IEU/µg) as determined by LAL test.;Bioactivity:The ED50 for this effect is less 5 ng/mL, measured by inducing STAT3 activation in U87 MG human glioblastoma/astrocytoma cells.;Formulation:Recombinant Human Interleukin-31/IL31 Protein was lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.4.;Stability:Recombinant Human Interleukin-31/IL31 Protein is stable for up to 1 year from date of receipt at -70℃.;Reconstitution:Please centrifuge tubes before opening. Do not mix by vortex or pipetting.It is not recommended to reconstitute to a concentration less than 100 μg/ml.Dissolve the lyophilized protein in ddH2O.Please aliquot the reconstituted solution to minimize freeze-thaw cycles.;Storage:Lyophilized recombinant human IL31 protein should be stored below -20°C, though stable at room temperature for 3 weeks. Reconstituted recombinant human IL31 protein solution can be stored at 4-7°C for 2-7 days.Aliquots of reconstituted recombinant human IL31 protein samples are stable below -20°C for 3 months.;Usage:For Lab Research Use Only;