Specifications
- Pk:50 µG
- Protein/peptide type:Recombinant
- Source:E. coli
- Species:Human
- Storage conditions:Lyophilized protein should be stored at −20 °C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7 °C for 2-7 days. Aliquots of reconstituted samples are stable at −20 °C for 3 months.
- Biological activity:ED50 is 5 ng/mL as determined by inducing STAT3 activation in U87 MG human glioblastoma/astrocytoma cells.
- Protein synonyms:IL-31|IL31|Interleukin-31
- Protein/peptide name:IL31
- Purity:> 95% as determined by reducing SDS-PAGE
- Molecular weight:15.8 kD
- Sequence:Ser24-Thr164
- Formulation:Lyophilized from a 0.2 um filtered solution of 20mM PB, 150mM NaCl, pH 7.4. Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100 ug/ml. Dissolve the Lyophilized protein in ddH2O. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
- Tested applications:Bioassay
Specifications
About this item
Human Interleukin 31 (IL-31) is a cytokine containing a four-helix bundle structure. It shares several structural and functional characteristics with IL-6, Oncostatin M, LIF, and Cardiotrophin-1. Human IL-31 cDNA encodes a 164 amino acid precursor that contains a 23 amino acid signal peptide and a 141 amino acid mature protein. Human and mouse IL-31 share 24% sequence identity in the mature region. IL-31 is mainly associated with activated T cells and is preferentially expressed by type 2 helper T cells (Th2). IL-31 signals via a heterodimeric receptor complex composed of a gp130 related molecule termed IL-31RA (also GPL and GLMR) and an Oncostatin M receptor (OSM R beta ). The IL-31 receptor is constitutively expressed by keratinocytes and upregulated by IFN gamma on monocytes. GPL/OSMR signaling is a strong activator of STAT3 and STAT5, and can also activate STAT1, Jak1, and Jak2 signaling pathways. IL-31 regulated immune responses have been implicated in skin physiology and inflammatory skin diseases. Studies have shown that IL31 induces severe pruritis (itching) and dermatitis in transgenic mice.
- This recombinant protein can be used for biological assays. For research use only.