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      Recombinant Mouse IL-21
       
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      產(chǎn)品說明書
                  
      FAQ
                  
      COA
                  
      已發(fā)表文獻(xiàn)
                  
       
      Interleukin-21 (IL-21) is an approximately 14 kDa four-helix-bundle cytokine in the family of cytokines that utilize the common gamma chain (gamma c) as a receptor subunit. Mature mouse IL-21 shares 66%, 59%, 58%, and 88% aa sequence identity with mature canine, human, rabbit, and rat IL-21, respectively. It can induce target cells division or proliferation. IL-21 elicits its effect through binding to IL-21R. IL-21 is a type I cytokine whose receptor is expressed on T, B, and NK cells. Within the B cell lineage, IL-21 regulates IgG1 production and cooperates with IL-4 for the production of multiple Ab classes in vivo. IL-21 has a significant influence on the regulation of B cell function in vivo and cooperates with IL-4. Additionally, IL-21 promoted tumor-specific CTL activity and enhanced memory responses to tumor rechallenge.
      


       
      


      Product Properties
      


      
	
		
      
			
			
      Synonyms
      
			      		
			
			
      CVID11, IL21, IL-21, interleukin 21, Za11
      
			      		
		
      
		
      
			
			
      Accession
      
			      		
			
			
      Q9ES17
      
			      		
		
      
		
      
			
			
      GeneID
      
			      		
			
			
      60505
      
			      		
		
      
		
      
			
			
      Source
      
			      		
			
			
      E.coli-derived mouse IL-21 protein, His18-Ser146
      
			      		
		
      
		
      
			
			
      Molecular Weight
      
			      		
			
			
      Approximately 15.0 kDa
      
			      		
		
      
		
      
			
			
      AA Sequence
      
			      		
			
			
      HKSSPQGPDR LLIRLRHLID IVEQLKIYEN DLDPELLSAP QDVKGHCEHA AFACFQKAKL KPSNPGNNKT FIIDLVAQLR RRLPARRGGK KQKHIAKCPS CDSYEKRTPK EFLERLKWLL QKMIHQHLS
      
			      		
		
      
		
      
			
			
      Tag
      
			      		
			
			
      None
      
			      		
		
      
		
      
			
			
      Physical Appearance
      
			      		
			
			
      Sterile Filtered White lyophilized (freeze-dried) powder.
      
			      		
		
      
		
      
			
			
      Purity
      
			      		
			
			
      > 98% by SDS-PAGE and HPLC analyses.
      
			      		
		
      
		
      
			
			
      Biological Activity
      
			      		
			
			
      The ED50 as determined by a cell proliferation assay using human N1186 T cells is less than 25 ng/mL, corresponding to a specific activity of > 4.0 × 104 IU/mg. Fully biologically active when compared to standard. 
      
			      		
		
      
		
      
			
			
      Endotoxin
      
			      		
			
			
      < 0.1 EU per 1μg of the protein by the LAL method.
      
			      		
		
      
		
      
			
			
      Formulation
      
			      		
			
			
      Lyophilized from a 0.2 µm filtered concentrated solution in 2 × PBS, pH 7.4.
      
			      		
		
      
		
      
			
			
      Reconstitution
      
			      		
			
			
      We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20°C. Further dilutions should be made in appropriate buffered solutions.
      
			      		
		
      
	      

      


       
      


      Shipping and Storage
      


      The products are shipped with ice pack and can be stored at -20℃ to -80℃ for 1 year.
      


      Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles.
      


       
      


      Cautions
      


      1. Avoid repeated freeze-thaw cycles.
      


      2. For your safety and health, please wear lab coats and disposable gloves for operation.
      


      3. For research use only.
      


       
      


      HB220210
      

         
       
       
       
       
       
       
       
      400-6111-883