| Description : |
Novel Neurotrophin-1 (NNT-1) or B-Cell Stimulating Factor-3 (BSF-3), is a new member of the IL-6 family of structurally related cytokines that includes IL-6, CNTF, LIF, CT-1, IL-11 and OSM. All family members share the receptor subunit gp130 that belong to the type I cytokine receptor superfamily. Ligand binding leads to gp130 homodimerization or heterodimerization (with LIF receptor or OSM receptor beta), and induces cell signaling and functional activity. For several family members, including CNTF, IL-6, and IL-11, binding of the ligand to a specific receptor alpha subunit (CNTF R alpha, IL-6 R alpha, or IL-11 R alpha) is required prior to gp130 homo- or hetero-dimerization. |
| Source : |
E.coli |
| Species : |
Human |
| Form : |
Lyophilized from a 0.2μm filtered concentrated solution in 30 % Acetonitrile and 0.1 % TFA. |
| Bio-activity : |
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 4 ng/ml, corresponding to a specific activity of > 2.5 × 10⁵ IU/mg in the presence of human CNTF R alpha. |
| Molecular Mass : |
Approximately 22.3 kDa, a single non-glycosylated polypeptide chain containing 198 amino acids. |
| Protein length : |
198 |
| AA Sequence : |
LNRTGDPGPGPSIQKTYDLTRYLEH QLRSLAGTYLNYLGPPFNEPDFNPP RLGAETLPRATVDLEVWRSLNDKLR LTQNYEAYSHLLCYLRGLNRQAATA ELRRSLAHFCTSLQGLLGSIAGVMA ALGYPLPQPLPGTEPTWTPGPAHSD FLQKMDDFWLLKELQTWLWRSAKDF NRLKKKMQPPAAAVTLHLGAHGF |
| Endotoxin : |
Less than 0.1 EU/μg of rHuNNT-1/BCSF-3 as determined by LAL method. |
| Purity : |
>98% by SDS-PAGE and HPLC analysis. |
| Storage : |
Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 centigrade as supplied. 1 month, 2 to 8 centigrade under sterile conditions after reconstitution. 3 months, -20 to -70 centigrade under sterile conditions after reconstitution. |
| Reconstitution : |
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤-20 centigrade. Further dilutions should be made in appropriate buffered solutions. |
