OSM Protein, Human (227a.a, His)

OSM protein is a multifunctional growth regulator with dual functions of inhibiting tumor cell lines and stimulating the proliferation of AIDS-KS cells. It coordinates the production of cytokines, including IL-6, G-CSF, and GM-CSF, and binds to type I and type II OSM receptors, forming heterodimers with LIFR/IL6ST and OSMR/IL6ST, respectively. OSM Protein, Human (227a.a, His) is the recombinant human-derived OSM protein, expressed by E. coli , with N-6*His labeled tag. The total length of OSM Protein, Human (227a.a, His) is 227 a.a., with molecular weight of ~27 kDa.

GMP OSM Protein stands as a versatile growth regulator with dual inhibitory effects on the proliferation of various tumor cell lines and stimulatory effects on AIDS-KS cell proliferation. Notably, OSM orchestrates the regulation of cytokine production, including IL-6, G-CSF, and GM-CSF from endothelial cells. This multifaceted growth regulator engages both the type I OSM receptor, forming heterodimers composed of LIFR and IL6ST, and the type II OSM receptor, forming heterodimers composed of OSMR and IL6ST. Beyond its antiproliferative and proliferative roles, OSM plays a crucial part in the maturation of fetal hepatocytes, contributing significantly to liver development and regeneration.

Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED₅₀ for this effect is 0.2968 ng/mL, corresponding to a specific activity is 3.369×10⁶ U/mg.

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  Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED₅₀ for this effect is 0.2968 ng/mL, corresponding to a specific activity is 3.369×10⁶ U/mg.

Human

E. coli

N-6*His

P13725 (A26-R252)

5008  [NCBI]

AAIGSCSKEYRVLLGQLQKQTDLMQDTSRLLDPYIRIQGLDVPKLREHCRERPGAFPSEETLRGLGRRGFLQTLNATLGCVLHRLADLEQRLPKAQDLERSGLNIEDLEKLQMARPNILGLRNNIYCMAQLLDNSDTAEPTKAGRGASQPPTPTPASDAFQRKLEGCRFLHGYHRFMHSVGRVFSKWGESPNRSRRHSPHQALRKGVRRTRPSRKGKRLMTRGQLPR

Approximately 27 kDa

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

Lyophilized powder.

Lyophilized from a 0.2 μm filtered solution of PBS, 300 mM NaCl, pH 7.4, 5% trehalose, 5% mannitol and 0.01% Tween 80.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O.

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.