PROVETOP

Biotinylated Human Oncostatin M/OSM Protein

Catalog No: OSM-HB001

Species
Human
Expression System
HEK293
Tag
His, Avi
Activity
Activity verified

Product overview

Recombinant Biotinylated Human Oncostatin M/OSM Protein is expressed in HEK293 cells with a His tag and Avi tag at the C-terminus. It contains amino acid residues Ala26-Arg221 (UniProt accession: P13725).

Product Details

Molecular Aliases
Oncostatin M; OSM; MGC20461
Protein Length
Ala26-Arg221
Expression System
HEK293
Theoretical Molecular Weight
The protein has a predicted MW of 25.1 kDa. Due to glycosylation, the protein migrates to 30-40 kDa based on Bis-Tris PAGE result.
Purity
> 95% as determined by Bis-Tris PAGE > 95% as determined by HPLC
Endotoxin
Less than 1 EU per μg by the LAL method.
Buffer / Formulation
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
State
Lyophilized
Storage Conditions
-20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3 months after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Reconstitution Advice
Dissolve the lyophilized protein in distilled water. Please refer to the Certificate of Analysis for detailed instructions.

Data Display

Bis-Tris PAGE
OSM-HB001 Bis-Tris-PAGE-white result

Biotinylated Oncostatin M on Bis-Tris PAGE under reduced conditions. The purity is greater than 95%.

SEC-HPLC
OSM-HB001 SEC-HPLC result

The purity of Biotinylated Oncostatin M is greater than 95% as determined by SEC-HPLC.

SPR
OSM-HB001 SPR result

Human LIF R, His Tag immobilized on CM5 Chip can bind Biotinylated Human Oncostatin M, His Tag with an affinity constant of 0.94 μM as determined in SPR assay (Biacore T200).

Background

OSM is a pleiotropic cytokine that initiates its biological activities by binding to specific cell surface receptors. Inhibits the proliferation of a number of tumor cell lines. Stimulates proliferation of AIDS-KS cells. It regulates cytokine production, including IL-6, G-CSF and GM-CSF from endothelial cells. Uses both type I OSM receptor (heterodimers composed of LIFR and IL6ST) and type II OSM receptor (heterodimers composed of OSMR and IL6ST). Involved in the maturation of fetal hepatocytes, thereby promoting liver development and regeneration.

References

  1. Junk D J, Bryson B L, Smigiel J M, et al. Oncostatin M promotes cancer cell plasticity through cooperative STAT3-SMAD3 signaling[J]. Oncogene, 2017.

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