Reactivity | MuSpecies Glossary |
Applications | Bioactivity |
Details of Functionality | Measured by its ability to induce alkaline phosphatase production by ATDC5 mouse chondrogenic cells. Nakamura, K. et al. (1999) Exp. Cell Res. 250:351. The ED50 for this effect is 0.5-4 ng/mL. |
Source | Chinese Hamster Ovary cell line, CHO-derived mouse BMP-9 protein Ser319-Arg428 |
Accession # | |
N-terminal Sequence | Ser319 |
Structure / Form | Disulfide-linked homodimer |
Protein/Peptide Type | Recombinant Proteins |
Gene | Gdf2 |
Purity | >90%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
Endotoxin Note | <0.01 EU per 1 μg of the protein by the LAL method. |
Dilutions |
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Theoretical MW | 12.1 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
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SDS-PAGE | 13 kDa, reducing conditions |
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Publications |
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Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein. |
Purity | >90%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
Reconstitution Instructions | Reconstitute at 100 μg/mL in 4 mM HCl containing at least 0.1% human or bovine serum albumin. |
Bone morphogenetic protein 9 (BMP-9), also known as growth and differentiation factor 2 (GDF-2), is a member of the BMP family of TGF-beta superfamily proteins that signal through heterodimeric complexes composed of type I and type II BMP receptors. BMP-9 regulates the development and function of a variety of embryonal and adult tissues (1, 2). Mouse BMP-9 consists of a 22 amino acid (aa) signal sequence, a 296 aa propeptide, and a 110 aa mature protein. Unlike other BMP family propeptides, the BMP-9 propeptide does not interfere with the biological activity of BMP-9, and remains associated with the mature peptide after proteolytic cleavage (3). Mouse and human BMP-9 share 96% aa sequence identity. Within the mature protein, mouse BMP-9 shares 64% aa sequence identity with mouse BMP-10 and approximately 50% aa sequence identity with other BMPs. BMP-9 is expressed by non-parenchymal cells in the liver where it promotes lipid metabolism and inhibits glucose production (4 - 6). It exerts a prolonged hypoglycemic effect which may be due to an enhancement of insulin release (6). BMP-9 interacts with the high affinity ALK-1 receptor on liver endothelial cells (3 - 5). It induces a cholinergic neuronal phenotype as well as the differentiation of mesenchymal stem cells into the chondrogenic lineage (7 - 11). At low concentrations, BMP-9 is a proliferative factor for hematopoietic progenitor cells, but at higher concentrations it enhances TGF-beta 1 production, and inhibits hematopoietic progenitor colony formation (12). BMP-9 also inhibits angiogenesis and the invasiveness of prostate carcinoma cells (13, 14).
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