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IL4 protein :: Interleukin 4 (IL4) Protein

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Catalog # MBS2086680 (SPECIAL PROMOTION: Get FREE $5 Starbucks gift card (Maximum 5 gift cards/product). Gift card(s) will be included with shipment)
Unit / Price
Scan QR to view Datasheet
  0.01 mg  /  $195 +1 FREE 8GB USB
  0.05 mg  /  $415 +1 FREE 8GB USB
  0.1 mg  /  $645 +1 FREE 8GB USB
  0.2 mg  /  $800 +1 FREE 8GB USB
  0.5 mg  /  $1,570 +1 FREE 8GB USB
  1 mg  /  $2,340 +2 FREE 8GB USB
Product Name

Interleukin 4 (IL4), Protein

Popular Item
Full Product Name

Eukaryotic Interleukin 4 (IL4)

Product Synonym Names
BSF1; BCGF1 ;B Cell Stimulatory Factor 1; Lymphocyte stimulatory factor 1; B Cell Growth Factor; Binetrakin; Pitrakinra
Product Gene Name
Matching Pairs
Matching Pairs
Matching Pairs
Research Use Only
For Research Use Only. Not for use in diagnostic procedures.
3D Structure
ModBase 3D Structure for P07750
293F cell
> 95%
Freeze-dried powder
N-terminal His Tag
Buffer Formulation
20mM Tris, 150mM NaCl, pH8.0, containing 1mM EDTA, 1mM DTT, 5% Trehalose and Proclin300.
Source Note
Eukaryotic expression
Organism Species
Endotoxin Level
<1.0EU per 1ug (determined by the LAL method)
Isoelectric Point
Subcellular Location
Reconstitute in PBS or others.
Preparation and Storage
Avoid repeated freeze/thaw cycles. Store at 2-8 degree C for one month. Aliquot and store at -80 degree C for 12 months.
The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37 degree C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.
ISO Certification
Manufactured in an ISO 9001:2008 and ISO 13485:2003 Certified Laboratory.
Supply Chain Verification
Manufactured in a lab with traceable raw materials. Bulk orders can typically be prepared to the customer’s specifications, please inquire.
Other Notes
Small volumes of IL4 protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.
Product Categories/Family for IL4 protein
Applications Tested/Suitable for IL4 protein
Positive Control, Immunogen, SDS-PAGE, Western Blot (WB)

Sequence Information of IL4 protein
IL4 protein Sequence Information image
SDS-Page of IL4 protein
IL4 protein SDS-Page image
Testing Data of IL4 protein
IL4 protein Testing Data image
NCBI/Uniprot data below describe general gene information for IL4. It may not necessarily be applicable to this product.
NCBI Accession #
NCBI GenBank Nucleotide #
UniProt Primary Accession #
UniProt Related Accession #
Molecular Weight
15.2kDa; 18/19kDa
NCBI Official Full Name
NCBI Official Synonym Full Names
interleukin 4
NCBI Official Symbol
NCBI Official Synonym Symbols
Il-4; BSF-1
  [Similar Products]
NCBI Protein Information
UniProt Protein Name
UniProt Synonym Protein Names
B-cell IgG differentiation factor; B-cell growth factor 1; B-cell stimulatory factor 1; BSF-1; IGG1 induction factor; Lymphocyte stimulatory factor 1
Protein Family
UniProt Gene Name
UniProt Synonym Gene Names
Il-4; IL-4; BSF-1  [Similar Products]
UniProt Comments for IL4
IL4: Participates in at least several B-cell activation processes as well as of other cell types. It is a costimulator of DNA-synthesis. It induces the expression of class II MHC molecules on resting B-cells. It enhances both secretion and cell surface expression of IgE and IgG1. It also regulates the expression of the low affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. Genetic variations in IL4 may be a cause of susceptibility to ischemic stroke (ISCHSTR); also known as cerebrovascular accident or cerebral infarction. A stroke is an acute neurologic event leading to death of neural tissue of the brain and resulting in loss of motor, sensory and/or cognitive function. Ischemic strokes, resulting from vascular occlusion, is considered to be a highly complex disease consisting of a group of heterogeneous disorders with multiple genetic and environmental risk factors. Belongs to the IL-4/IL-13 family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Cell cycle regulation; Cytokine; Motility/polarity/chemotaxis; Secreted; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 11 B1.3|11 31.97 cM

Cellular Component: external side of plasma membrane; extracellular space

Molecular Function: cytokine activity

Biological Process: B cell activation; B cell costimulation; cholesterol metabolic process; defense response to protozoan; innate immune response in mucosa; microglial cell activation; myeloid dendritic cell differentiation; negative regulation of acute inflammatory response; negative regulation of chronic inflammatory response; negative regulation of macrophage activation; negative regulation of nitric oxide biosynthetic process; negative regulation of osteoclast differentiation; negative regulation of T cell activation; negative regulation of transcription, DNA-dependent; positive regulation of activated T cell proliferation; positive regulation of B cell activation; positive regulation of B cell proliferation; positive regulation of cell proliferation; positive regulation of chemokine biosynthetic process; positive regulation of defense response to virus by host; positive regulation of immunoglobulin production; positive regulation of interleukin-10 production; positive regulation of interleukin-13 production; positive regulation of isotype switching to IgE isotypes; positive regulation of isotype switching to IgG isotypes; positive regulation of mast cell degranulation; positive regulation of MHC class II biosynthetic process; positive regulation of peptidyl-tyrosine phosphorylation; positive regulation of protein amino acid phosphorylation; positive regulation of T cell differentiation; positive regulation of T cell proliferation; positive regulation of transcription factor activity; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; positive regulation of tyrosine phosphorylation of Stat5 protein; regulation of immune response; regulation of inflammatory response; regulation of proton transport; T-helper 1 cell lineage commitment; T-helper 2 cell differentiation
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While every efforts were made to ensure the accuracy of the information provided in this datasheet, MyBioSource will not be liable for any omissions or errors contained herein. MyBioSource reserves the right to make changes to this datasheet at any time without prior notice.

It is the responsibility of the customer to report product performance issues to MyBioSource within 30 days of receipt of the product. Please visit our Terms & Conditions page for more information.
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