Recombinant Rat Oncostatin-M (OSM) Protein (His)

Name: Recombinant Rat Oncostatin-M (OSM) Protein (His)
Brand: Beta LifeScience
SKU: BLC-04533P
Availability: InStock

Greater than 85% as determined by SDS-PAGE.

Collections: Cytokines, Cytokines and growth factors, Growth factors and receptors, Recombinant proteins, Recombinant proteins fall special offers - full-length proteins

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Product Overview

Description	Recombinant Rat Oncostatin-M (OSM) Protein (His) is produced by our Yeast expression system. This is a full length protein.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	Q65Z15
Target Symbol	OSM
Synonyms	Osm; Oncostatin-M; OSM
Species	Rattus norvegicus (Rat)
Expression System	Yeast
Tag	N-6His
Target Protein Sequence	KRGCSSSSPKLLSQLKSQANITGNTASLLEPYILHQNLNTLTLRAACTEHPVAFPSEDMLRQLSKPDFLSTVHATLGRVWHQLGAFRQQFPKIQDFPELERARQNIQGIRNNVYCMARLLHPPLEIPEPTQADSGTSRPTTTAPGIFQIKIDSCRFLWGYHRFMGSVGRVFEEWGDGSRRSRR
Expression Range	26-208aa
Protein Length	Full Length of Mature Protein
Mol. Weight	22.6 kDa
Research Area	Immunology
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Growth regulator. Inhibits the proliferation of a number of tumor cell lines. It regulates cytokine production, including IL-6, G-CSF and GM-CSF from endothelial cells. Uses only type II OSM receptor (heterodimers composed of OSMR and IL6ST). Involved in the maturation of fetal hepatocytes, thereby promoting liver development and regeneration.
Subcellular Location	Secreted.
Protein Families	LIF/OSM family
Database References	KEGG: rno:289747 STRING: 10116.ENSRNOP00000032548 UniGene: Rn.127158
Tissue Specificity	Widely expressed. Expressed at higher levels in liver, skin and spleen.

Gene Functions References

OSM is a key mediator for inducing differentiation of OC15-5 cells into hepatocytes PMID: 15743783
In the immortalized mouse and primary cultured proliferative rat hepatocytes, treatment with OSM markedly increased mRNA and protein of claudin-2 together with formation of developed networks of TJ strands. PMID: 17434483
OSM may not only play a role in the regulation of Sertoli cell proliferation and the initiation of spermatogenesis but may also play a role in the regulation of Leydig cell progenitor formation. PMID: 17996055
Results indicate that osteosarcoma cells stably producing OSM do not develop resistance to this cytokine and thus could be a valuable new tool to study the anti-cancer effect of OSM in vivo. PMID: 19168167

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.