OSM Protein, Human (227a.a)

OSM Protein, Human (227a.a) is a polypeptide chain containing 227 amino acids. Oncostatin M is a cytokine belonging to the IL-6 family that has multiple functions in hematopoiesis, mesenchymal stem cell differentiation, liver regeneration, heart remodeling, nociception, inflammation and metabolism.

Oncostatin M is a cytokine belonging to the IL-6 family that has multiple functions in hematopoiesis, mesenchymal stem cell differentiation, liver regeneration, heart remodeling, nociception, inflammation and metabolism. The full-length Oncostatin M proteins contain between 239 and 263 amino acids which fold into a long-chain four helix-bundle protein with an up-up-down-down topology representative of all other IL-6 family cytokines. Human Oncostatin-M can bind to either the type I receptor complex consisting of gp130 and the LIFR (gp130/LIFRb) or the type II receptor complex consisting of gp130 and the OSMR (gp130/OSMRb). In the murine system Oncostatin-M has been shown to bind with high affinity only to the type II gp130/OSMRb complex^[1][2]. Oncostatin-M binds to specific receptor complexes, then activates two major signaling pathways: Janus Kinase-Signal Transducers and Activators of Transcription (JAK-STAT) and Mitogen-Activated Protein Kinase (MAPK), to regulate downstream events^[3].

The ED₅₀ is <10 ng/mL as measured by human TF-1 cells, corresponding to a specific activity of >1.0 × 10⁵ units/mg.

Human

E. coli

Tag Free

P13725 (A26-R252)

5008  [NCBI]

AAIGSCSKEYRVLLGQLQKQTDLMQDTSRLLDPYIRIQGLDVPKLREHCRERPGAFPSEETLRGLGRRGFLQTLNATLGCVLHRLADLEQRLPKAQDLERSGLNIEDLEKLQMARPNILGLRNNIYCMAQLLDNSDTAEPTKAGRGASQPPTPTPASDAFQRKLEGCRFLHGYHRFMHSVGRVFSKWGESPNRSRRHSPHQALRKGVRRTRPSRKGKRLMTRGQLPR

Approximately 25.9 kDa

Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized powder

Lyophilized after extensive dialysis against PBS or PBS, pH 7.4, 8% trehalose.

<0.2 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.

• [1]. Hermanns HM, et al. Oncostatin M and interleukin-31: Cytokines, receptors, signal transduction and physiology. Cytokine Growth Factor Rev. 2015 Oct;26(5):545-58.  [Content Brief]

  [2]. Gómez-Lechón MJ, et al. Oncostatin M: signal transduction and biological activity. Life Sci. 1999;65(20):2019-30.  [Content Brief]

  [3]. Chen SH, et al. Oncostatin M: a pleiotropic cytokine in the central nervous system. Cytokine Growth Factor Rev. 2004 Oct;15(5):379-91.  [Content Brief]