OSM active protein

Recombinant Human OSM

Cat. Num. AAA4159701

• Purity: >95% as determined by SDS-PAGE
• Synonyms: OSM; Recombinant Human OSM; Oncostatin M; OSM active protein

• Host: E Coli
• Purity/Purification: >95% as determined by SDS-PAGE
• Form/Format: Lyophilized from a 0.2 um filtered concentrated (1.0 mg/mL) PBS solution, pH 7.0.
• Sequence Length: 252

• Bioactivity: The ED(50) was determined by the dose-dependent stimulation of the proliferation of f human TF-1 cells is <= 3.0 ng/mL, corresponding to a specific activity of >= 2.0 x 10^5 units/mg.
• Endotoxin Level: <1.0 EU/ug of recombinant protein as determined by the LAL method.
• Reconstitution: A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
• Preparation and Storage: The lyophilized protein is stable for at least one year from date of receipt at-70 degree C. Upon reconstitution, this cytokine can be stored in working aliquots at 2-8 degree C for one month, or at-20 degree C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.

Testing Data

Testing Data

Related Product Information for OSM active protein

Oncostatin M is produced by monocytes and T cells after cell activation, adherent macrophages, and various T cell lines. Oncostatin M is a member of the IL-6-related cytokine subfamily that includes IL-6, IL-11, LIF, CNTF and CT-1. Oncostatin M mediates its bioactivities through two different heterodimer receptors. They both involve gp130 as a signal transducing moiety, which is found also in receptors for a number of other cytokines. When gp130 dimerizes with LIF receptor beta subunit this generates the high affinity type 1 OSM receptor. When gp130 dimerizes with a protein known as OSM receptor beta this generates the type 2 OSM receptor. Both OSM receptors activate the receptor-associated Janus kinases JAK1, JAK2, and TYK2. Signaling also involves the transcriptional activators STAT3 and STAT5b (see also: STAT proteins) were specifically activated through the gp130-OSM-R-beta type II heterocomplex. The signaling pathway differences observed between the common type I LIF/OSM receptor and the specific type II OSM receptor might explain some of the bioactivities specifically displayed by OSM. Oncostatin M inhibits the growth of several tumor cell lines (A375 melanoma, lung carcinomas). The antiproliferative activity of oncostatin M for some cell lines is synergised by TGF-beta and IFN-gamma. It promotes the growth of human fibroblasts, vascular smooth muscle cells, and some normal cell lines. Oncostatin can inhibit the proliferation of murine M1 myeloid leukemic cells and induces their differentiation into macrophage-like cells, a function shared by LIF, G-CSF, and IL-6.

NCBI and Uniprot Product Information

• NCBI GI #: 10092621
• NCBI GeneID: 5008
• NCBI Accession #: NP_065391.1
• NCBI GenBank Nucleotide #: NP_065391.1
• UniProt Accession #: P13725
• Molecular Weight: 26.0 kDa
• NCBI Official Full Name: oncostatin-M isoform 1 preproprotein
• NCBI Official Synonym Full Names: oncostatin M
• NCBI Official Symbol: OSM
• NCBI Protein Information: oncostatin-M
• UniProt Protein Name: Oncostatin-M
• Protein Family: Osmin
• UniProt Gene Name: OSM
• UniProt Synonym Gene Names: OSM
• UniProt Entry Name: ONCM_HUMAN

NCBI Description

This gene encodes a member of the leukemia inhibitory factor/oncostatin-M (LIF/OSM) family of proteins. The encoded preproprotein is proteolytically processed to generate the mature protein. This protein is a secreted cytokine and growth regulator that inhibits the proliferation of a number of tumor cell lines. This protein also regulates the production of other cytokines, including interleukin 6, granulocyte-colony stimulating factor and granulocyte-macrophage colony stimulating factor in endothelial cells. This gene and the related gene, leukemia inhibitory factor, also present on chromosome 22, may have resulted from the duplication of a common ancestral gene. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is proteolytically processed. [provided by RefSeq, Jan 2016]

Uniprot Description

OSM: Growth regulator. 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 LIPR 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. Belongs to the LIF/OSM family.

Protein type: Secreted, signal peptide; Cytokine; Secreted

Chromosomal Location of Human Ortholog: 22q12.2

Cellular Component: extracellular space

Molecular Function: growth factor activity; oncostatin-M receptor binding; cytokine activity

Biological Process: multicellular organismal development; negative regulation of hormone secretion; tyrosine phosphorylation of Stat3 protein; tyrosine phosphorylation of Stat5 protein; positive regulation of peptidyl-serine phosphorylation; peripheral nervous system development; cell proliferation; negative regulation of cell proliferation; positive regulation of peptidyl-tyrosine phosphorylation; behavioral response to pain; positive regulation of MAPKKK cascade; response to heat; positive regulation of acute inflammatory response; regulation of growth; positive regulation of cell division; negative regulation of meiosis; positive regulation of cell proliferation; tyrosine phosphorylation of Stat1 protein; positive regulation of transcription from RNA polymerase II promoter; immune response