GRADE & PURITYAnimal Free?Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material.Carrier Free?Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays.Bioactive?Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure.ActiBioPure™?ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required.High Performance?High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short.PBS Only?PBS-only formulation — supplied in phosphate-buffered saline with no other additives. Use when you need a clean PBS buffer free of stabilizers/carriers.≥95%(SDS-PAGE)See COA
Accession #
P05112
Protein Tag
No tag
Expression system
HEK293
Endotoxin Concentration
<1.0 EU/μg
Bioactivity
Measured in a cell proliferation assay using TF-1 cells. The ED50 for this effect is typically 0.096 ng/mL.
ActiBioPure™, Animal Free, Bioactive, Carrier Free, High Performance, PBS Only
Specifications & Purity
Animal Free, Carrier Free, Bioactive, ActiBioPure™, High Performance, PBS Only, ≥95%(SDS-PAGE), See COA
Biochemical and Physiological Mechanisms
Interleukin-4 (IL-4), also known as B cell-stimulatory factor-1, is a monomeric, approximately 13 kDa‑18 kDa Th2 cytokine that shows pleiotropic effects during immune responses. It is a glycosylated polypeptide that contains three intrachain disulfide bri
Bioactivity
Measured in a cell proliferation assay using TF-1 cells. The ED50 for this effect is typically 0.096 ng/mL.
16.6-19.7 kDa, under reducing conditions; 16.2-18.6 kDa, under non-reducing conditions.
Molecule Type
Protein
Storage and Shipping
Concentration
See COA
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute at 0.5 mg/mL in sterile distilled water. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.
Storage
Store at -20°C,Avoid repeated freezing and thawing
Shipped In
Ice chest + Ice pads
Stability And Storage
Store at -20℃ for 12 months. Upon reconstitution, it is recommended to aliquot. Avoid freeze/thaw cycle.
Images
Recombinant Human IL-4 Protein (rp228975) - Bioactivity Measured in a cell proliferation assay using TF-1 cells. The ED50 for this effect is typically 0.096 ng/mL.
Recombinant Human IL-4 Protein (rp228975) - SDS-PAGE 3 μg/lane of Recombinant Human IL-4 Protein was resolved with SDS-PAGE under reducing (R) and non-reducing (N) conditions and visualized by Coomassie® Blue staining, showing a band at 16.6-19.7 kDa under reducing conditions and 16.2-18.6 kDa under non-reducing conditions.
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
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