Animal Free Cytokines
            
Recombinant Human IL-4
            

            

             
        
        

            
 
            

            

                

                    

                        

                        
Synonyms :
                        
                        

                        
BCGF, BCDF, B cell stimulating factor (BSF-1)
                        
                    
                    

                        

                        
Description :
                        
                        

                        
IL-4 is a pleiotropic cytokine that regulates diverse T and B cell responses including cell proliferation, survival and gene expression. Produced by mast cells, T cells and bone marrow stromal cells, IL-4 regulates the differentiation of naive CD4+ T cells into helper Th2 cells, characterized by their cytokine-secretion profile that includes secretion of IL-4, IL-5, IL-6, IL-10, and IL-13, which favor a humoral immune response. Another dominant function of IL-4 is the regulation of immunoglobulin class switching to the IgG1 and IgE isotypes. Excessive IL-4 production by Th2 cells has been associated with elevated IgE production and allergy. Recombinant human IL-4 is a 14.9 kDa globular protein containing 129 amino acid residues.Manufactured using all non-animal reagents.
                        
                    
                    

                        

                        
Catalog #:
                        
                        

                        
AF-200-04
                        
                    
                    

                        

                        
Source :
                        
                        

                        
E.coli
                        
                    
                    

                        

                        
Purity :
                        
                        

                        
Greater than 98% by SDS-PAGE gel and HPLC analyses.
                        
                    
                    

                        

                        
Endotoxin Level :
                        
                        

                        
Endotoxin level is less than 0.1 ng per μg (1EU/μg).
                        
                    
                    

                        

                        
Biological Activity :
                        
                        

                        
The ED50 was determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 106 units/mg.
                        
                    
                    

                        

                        
AA Sequence :
                        
                        

                        
MHKCDITLQE IIKTLNSLTE QKTLCTELTV TDIFAASKNT TEKETFCRAA TVLRQFYSHH EKDTRCLGAT AQQFHRHKQL IRFLKRLDRN LWGLAGLNSC PVKEANQSTL ENFLERLKTI MREKYSKCSS 
                        
                    
                    

                        

                        
PubMed Link :
                        
                        

                        
IL_4
                        
                    
                    

                        

                        
Country of Origin :
                        
                        

                        
USA
                        
                    
                    

                        
 
                        

                        
                    
                    

                        

                        
 
                        
                        

                        

                        

                            

                                

                                    
Size B
                                    
20μg
                                    
$215 
                                    
 
                                
                                

                                    
 
                                
                                

                                    
Size C
                                    
1mg
                                    
$4300 
                                    
 
                                
                                

                                    
 
                                
                            
                        
                        

                        
                    
                    

                        

                        
 
                        
                        

                        
                    
                    

                        

                        
 
                        
                        

                        
Special Sizes: 

                        Many products can be ordered in custom sizes. Please click here to contact Peprotech with your request.
                        
                    
                    

                        

                        
 
                        
                        

                        
Usage:

                        For Research Use Only. Not for use in diagnostic or therapeutic procedures.