Recombinant Human IL-4 Protein, Active, Low Endotoxin

Beta LifeScience SKU/CAT #: BEP-0015UL
Recombinant Human IL-4 (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 15 kDa and purity greater than 97%.
Recombinant Human IL-4 (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 15 kDa and purity greater than 97%.

Recombinant Human IL-4 Protein, Active, Low Endotoxin

Beta LifeScience SKU/CAT #: BEP-0015UL
/
Size

Submit an inquiry or email sales for a custom bulk quote. Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

Connect with us via the live chat in the bottom corner to receive immediate assistance.

Product Overview

Product Name Recombinant Human IL-4 Protein
Target Symbol IL4
Alternative Names Interleukin 4, Lymphocyte Stimulatory Factor 1, B-Cell Stimulatory Factor 1, B Cell Growth Factor 1, BCGF1, BSF1, Binetrakin, Pitrakinra, MGC79402, IL4e12, IgG1 Induction Factor
Accession Number P05112
Expression System E.Coli.
Molecular Weight 15.1 kDa (monomer, predicted)
Sequence His25-Ser153, with an N-terminal Met
Purity >97% by SDS-PAGE and quantitative densitometry by Coomassie® Blue staining.
Activity Determined by a cell proliferation assay using human TF-1 cells. The ED50 for this effect is typically <100 pg/mL.
Formulation Lyophilized from sterile PBS with Trehalose, pH 7.4
Endotoxin Level <0.001 EU/1ug of the protein as determined by the LAL method.
Shipping Shipped at ambient temperature.
Stability & Storage 12 months from date of receipt at -20°C to -70°C, lyophilized powder. 3 months at -20°C to -70°C under sterile conditions after reconstitution. Avoid repeated freeze-thaw cycles.
Reconstitution Reconstitute at 100 ug/mL in sterile PBS.
Target Function Interleukin-4 (IL-4) is a cytokine involved in the regulation of immune and inflammatory responses. It promotes the differentiation of naïve T cells into Th2 cells, which in turn stimulate B cells to upregulate IgE antibodies. IL-4 is produced by mast cells, eosinophils, basophils and committed Th2 cells. There are two cell-dependent receptor complexes, either a heterodimer of IL-4 R alpha (CD124) and the common gamma chain (CD132) associated with hematopoietic cells or a heterodimer of IL-4 R alpha and IL-13 R alpha 1 (CD213A1) associated with non-hematopoietic cells.
Tissue Specificity IL-4 expression has been identified in lymph node and placenta.
Cellular Localization Secreted protein
Involvement In Disease Allergic inflammation, allergic rhinitis, asthma, atopic dermatitis, autoimmune disorders (rheumatoid arthritis, systemic lupus erythematosus (SLE), and multiple sclerosis), inflammatory bowel disease (IBD) and graft-versus-host disease (GVHD).

FAQs

Please fill out the Online Inquiry form located on the product page. Key product information has been pre-populated. You may also email your questions and inquiry requests to sales1@betalifesci.com. We will do our best to get back to you within 4 business hours.

Feel free to use the Chat function to initiate a live chat. Our customer representative can provide you with a quote immediately.

Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

More from All Products
Sale
SDS-PAGE analysis of Human USP9X (Ubiquitin Carboxyl-Terminal Hydrolase 9X) - Recombinant Protein, CAT# BLT-07739P, showing >90% purity under 15% SDS-PAGE (Reduced)
Human USP9X (Ubiquitin Carboxyl-Terminal Hydrolase 9X) - Recombinant Protein
  • Molecule: USP9X;
  • Species: Human;
  • Expression system: E.coli;
  • Tag: N-GST;
  • Sequence: 1554-1995aa;
CAT#: BLT-07739P

Save $139
Tn5 Transposase
  • Expression system: E.coli;
CAT#: TN5-BL01
Sale
SDS-PAGE analysis of Human NDUFV1 (Nadh Dehydrogenase [Ubiquinone] Flavoprotein 1, Mitochondrial) - Recombinant Protein, CAT# BLT-08321P, showing >90% purity under 15% SDS-PAGE (Reduced)
Human NDUFV1 (Nadh Dehydrogenase [Ubiquinone] Flavoprotein 1, Mitochondrial) - Recombinant Protein
  • Molecule: NDUFV1;
  • Species: Human;
  • Expression system: E.coli;
  • Tag: N-6His+SUMO;
  • Sequence: 21-464aa;
CAT#: BLT-08321P

Save $139
Sale
SDS-PAGE analysis of Human TRIM21 (E3 Ubiquitin-Protein Ligase Trim21) - Recombinant Protein, CAT# BLT-07371P, showing >90% purity under 15% SDS-PAGE (Reduced)
Human TRIM21 (E3 Ubiquitin-Protein Ligase Trim21) - Recombinant Protein
  • Molecule: TRIM21;
  • Species: Human;
  • Expression system: E.coli;
  • Tag: N-6His;
  • Sequence: 268-465aa;
CAT#: BLT-07371P

Save $139
Sale
SDS-PAGE analysis of Human RECK (Reversion-Inducing Cysteine-Rich Protein With Kazal Motifs) - Recombinant Protein, CAT# BLT-08901P showing >90% purity under 15% SDS-PAGE (Reduced)
Human RECK (Reversion-Inducing Cysteine-Rich Protein With Kazal Motifs) - Recombinant Protein
  • Molecule: RECK;
  • Species: Human;
  • Expression system: Mammalian Cell;
  • Tag: C-6His;
  • Sequence: 27-941;
CAT#: BLT-08901P

Save $139
Sale
SDS-PAGE analysis of Human SHFL (Shiftless Antiviral Inhibitor Of Ribosomal Frameshifting Protein) - Recombinant Protein, CAT# BLT-08873P showing >85% purity under 15% SDS-PAGE (Reduced)
Human SHFL (Shiftless Antiviral Inhibitor Of Ribosomal Frameshifting Protein) - Recombinant Protein
  • Molecule: SHFL;
  • Species: Human;
  • Expression system: E.coli;
  • Tag: N-6His+sumo;
  • Sequence: 1-291;
CAT#: BLT-08873P

Save $139
Recently viewed