| Strength: | |
|---|---|
| Quantity: | |
SJB02
10μg, 30μg, 100μg
Description:
Interleukin4 (IL4), also known as B cell stimulating factor 1, consists of 129 amino acid residues. It contains 6 cysteines, which are involved in the formation of 3 pairs of disulfide bonds in the molecule.
Source: Yeast.
Molecular Mass: Approximately 30.0kD glycosylated protein.
Purity: ≥97%.
Endotoxin Level: <1EU/µg, determined by the LAL method.
Biological Activity:
Measured in a cell proliferation assay using a human factor-dependent cell line, TF-1. The specific activity shall be not less than 1×107IU/mg.
Formulation:
Lyophilized from a 0.2μm filtered solution in PBS, pH7.4.
Reconstitution:
It is recommended to centrifuge at 10,000rpm for 30-60 sec or 3000rpm for 5 min before opening the tube, and then reconstitute with 0.2ml sterile water.
Storage:
Lyophilized samples are stable for 36 months from date of manufacture at -20℃ to -70℃.
Upon reconstitution, this cytokine can be stored under sterile conditions at 2- 8℃ for one month or at -20℃ to -70℃ in a manual defrost freezer for three months without detectable loss of activity.
Avoid repeated freeze-thaw cycles.
For Laboratory Use Only.
Description:
Interleukin4 (IL4), also known as B cell stimulating factor 1, consists of 129 amino acid residues. It contains 6 cysteines, which are involved in the formation of 3 pairs of disulfide bonds in the molecule.
Source: Yeast.
Molecular Mass: Approximately 30.0kD glycosylated protein.
Purity: ≥97%.
Endotoxin Level: <1EU/µg, determined by the LAL method.
Biological Activity:
Measured in a cell proliferation assay using a human factor-dependent cell line, TF-1. The specific activity shall be not less than 1×107IU/mg.
Formulation:
Lyophilized from a 0.2μm filtered solution in PBS, pH7.4.
Reconstitution:
It is recommended to centrifuge at 10,000rpm for 30-60 sec or 3000rpm for 5 min before opening the tube, and then reconstitute with 0.2ml sterile water.
Storage:
Lyophilized samples are stable for 36 months from date of manufacture at -20℃ to -70℃.
Upon reconstitution, this cytokine can be stored under sterile conditions at 2- 8℃ for one month or at -20℃ to -70℃ in a manual defrost freezer for three months without detectable loss of activity.
Avoid repeated freeze-thaw cycles.
For Laboratory Use Only.
