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rhBMP-4 (1 mg)
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View LargerRecombinant Human BMP‑4 (Catalog # 314-BP) induces BMP responsive SEAP reporter activity in HEK293 human embryonic kidney cells. The ED50 for this effect is 0.70-7.00 ng/mL.
View Larger1 μg/lane of Recombinant Human BMP-4 was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing major bands at 19-24 kDa and 35-41 kDa, respectively. Multiple bands in gel are due to variable glycosylation.
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
314-BP
| Formulation | Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein. |
| Reconstitution | Reconstitute at 50-200 μg/mL in sterile 4 mM HCl containing at least 0.1% human or bovine serum albumin. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
314-BP/CF
| Formulation | Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA. |
| Reconstitution | Reconstitute at 50-200 μg/mL in sterile 4 mM HCl. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Recombinant Human BMP-4 Protein Summary
Product Specifications
Ser293-Arg408
Analysis
35-41 kDa, non-reducing conditions
Background: BMP-4
BMP-4 is a TGF-beta superfamily ligand that is widely expressed from early embryogenesis through adulthood. It plays an important role in mesenchyme formation, epidermal determination, suppression of neural induction, the development of multiple organs, and tissue repair (1-5). The human BMP-4 precursor contains a 273 amino acid (aa) propeptide and a 116 aa mature protein (6). Processing of the propeptide by furin or proprotein convertase 6 enables the formation of the mature disulfide-linked homodimeric BMP-4 and facilitates its secretion. Similar intracellular processes may lead to the formation and recreation of BMP4/BMP7
disulfide-linked heterodimer (7-9). Mature human and mouse BMP-4 share 98% aa sequence identity. Human BMP-4 shares 85% aa sequence identity with human BMP-2 and less than 50% with other human BMPs. Compared to BMP-4 homodimers, BMP-4/BMP-7 heterodimers exhibit a greater potency in inducing osteogenic differentiation (9). In Xenopus, the heterodimers can also induce the formation of mesoderm, whereas BMP-4 homodimers only provide ventralizing signals for existing mesoderm (10). BMP-4 signals through tetrameric complexes composed of type I (primarily Activin RIA or BMPR-IA) and type II (primarily Activin RIIA or BMPR-II) receptors (11, 12). The bioavailability of BMP-4 is regulated by its interaction with multiple proteins and glycosaminoglycans (13-15).
- Zhang, P. et al. (2008) Blood 111:1933.
- Gambaro, K. et al. (2006) Cell Death Differ. 13:1075.
- Simic, P. and S. Vukicevic (2005) Cytokine Growth Factor Rev. 16:299.
- Sadlon, T.J. et al. (2004) Stem Cells 22:457.
- Frank, D.B. et al. (2005) Circ. Res. 97:496.
- Wozney, J. et al. (1988) Science 242:1528.
- Cui, Y. et al. (1998) EMBO J. 17:4735.
- Cui, Y. et al. (2001) Genes Dev. 15:2797.
- Aono, A. et al. (1995) Biochem. Biophys. Res. Commun. 210:670.
- Nishimatsu, S. and G.H. Thomsen (1998) Mech. Dev. 74:75.
- Chen, D. et al. (2004) Growth Factors 22:233.
- Lavery, K. et al. (2008) J. Biol. Chem. April 24 epub.
- Rosen, V. (2006) Ann. N.Y. Acad. Sci. 1068:19.
- Jones, C.M. and J.C. Smith (1998) Dev. Biol. 194:12.
- Takada, T. et al. (2003) J. Biol. Chem. 278:43229.
参考图片
1 ug/lane of Recombinant Human BMP-4 was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing major bands at 22-25 kDa and 37-41 kDa, respectively. Multiple bands in gel are due to variable glycosylation.
Recombinant Human BMP-4 (Catalog #
314-BP/CF) induces alkaline phosphatase production in the ATDC5 mouse chondrogenic cell line. The ED50 for this effect is typically 2.5-15 ng/mL.