Oncostatin M Protein, Human, Recombinant

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Oncostatin M Protein, Human, Recombinant: Product Information

Purity
> 95 % as determined by SDS-PAGE.
Endotoxin
< 1.0 EU per μg protein as determined by the LAL method.
Activity
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells.
The ED50 for this effect is typically 0.2-1 ng/mL.
Protein Construction
A DNA sequence encoding the human OSM (NP_065391.1) (Met1-Arg221) was expressed.
Accession#
Expressed Host
HEK293 Cells
Species
Human
Predicted N Terminal
Ala 26
Molecule Mass
The recombinant human OSM consists 196 amino acids and predicts a molecular mass of 22.2 kDa.
Formulation
Lyophilized from sterile PBS, pH 7.4.
Please contact us for any concerns or special requirements.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the hard copy of CoA.
Shipping
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Stability & Storage
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

Oncostatin M Protein, Human, Recombinant: Images

Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is typically 0.2-1 ng/mL.

Oncostatin M Background Information

Oncostatin M (OSM) is a glycoprotein belonging to the interleukin-6 family of cytokines that has functions mainly in cell growth. Oncostatin M (OSM) is considered as a pleiotropic cytokine that signals through cell surface receptors typeⅠand typeⅡ both of which share the similarity of containing protein gp13 and takes part in many biometabolism processes including liver development, haematopoeisis, inflammation, bone formation and destruction and possibly CNS development. Oncostatin M (OSM) was previoustly identified by its ability to inhibit the growth of cells from melanoma and other solid tumors. It also has been reported that OSM, like LIF, IL-6 and G-CSF, has the ability to inhibit the proliferation of murine M1 myeloid leukemic cells and can induce their differentiation into macrophage-like cells. The human form of OSM is insensitive between pH2 and 11 and resistant to heating for one hour at 56 degree but is not stable at 9 degrees. The human OSM is produced as a precursor containing 252 amino acids, whose first 25 amino acids function as a secretory signal peptide and which on removal yields the soluble 227 amino acid pro-OSM. Removal of the C-teminal most 31 amino acids produces the fully active 196 residue form.
Full Name
oncostatin M
References
  • Tanaka M, et al. (2003) Oncostatin M, a multifunctional cytokine. Rev Physiol Biochem Pharmacol. Reviews of Physiology, Biochemistry and Pharmacology. 149: 39-52.
  • Auguste P, et al. (1997) Signaling of type II oncostatin M receptor. J Biol Chem. 272 (25): 15760-4.
  • Zarling JM, et al. (1986). Oncostatin M: a growth regulator produced by differentiated histiocytic lymphoma cells. Proc Natl Acad Sci. 83 (24): 9739-43.
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