Product Specifications for Recombinant Human RGM-A Protein, CF
Mouse myeloma cell line, NS0-derived human RGM-A protein Cys48-Gly422 & Pro169-Gly422, both with a C-terminal 6-His tag
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
<1.0 EU per 1 μg of the protein by the LAL method.
N-terminal sequence Analysis
Cys48 & Pro169
Predicted Molecular Mass
Multiple bands between 25-37 kDa, reducing conditions
Measured by its binding ability in a functional ELISA. When rhBMP-4 is coated at 1 μg/mL, rhRGM-A binds with an apparent KD <50nM. Immobilized rhRGM-A can bind rmNeogenin/Fc Chimera with a linear range of 10-500 ng/mL.
Formulation, Preparation and Storage
What does CF mean?
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our
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.
What formulation is right for me?
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
Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitute at 100 μg/mL in sterile PBS.
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.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, -20 to -70 °C under sterile conditions after reconstitution.
Human Repulsive Guidance molecule (RGM) is a 33 kDa GPI-linked member of an expanding RGM-related family of neuronal and muscle-expressed membrane proteins (1). It is synthesized as a 450 amino acid (aa) preproprotein that contains a 47 aa signal sequence, a 121 aa N-terminal prosegment, a 256 mature region and a 26 aa C-terminal prosegment (2). The N-terminal prosegment contains an RGD tripeptide and the molecule’s only two potential N-linked glycosylation sites. The mature segment shows an abbreviated von Willebrand factor domain. Proteolytic processing occurs at an aspartic acid-proline bond, creating a predicted 32 kDa mature region (2). The mature region of human RGM-A has 88% and 93% aa identity to the chick and mouse mature region of RGM-A, respectively. When compared to human RGMb and c, the mature region of human RGM-A shows 58% and 54% aa identity, respectively. Recombinant chick RGM-A has been reported to induce collapse of temporal but not nasal growth cones, and to repel temporal retinal axons in vitro. This suggests a role in the development of the retina-superior colliculus connection. In mammals, however, this activity is not so evident, and thus its function in this system is uncertain (3). Alternatively, in mice, RGM-A is said to be needed for neural tube closure, and may play a role in entorhinal-hippocampal connections (3, 4). The receptor for RGM-A is reported to be neogenin (5, 6). RGM-A has also been shown to be a bone morphogenic protein co-receptor, able to bind both BMP-2 and BMP-4 (7).
Samad, T.A. et al. (2004) J. Neurosci. 24:2027.
Monnier P. et al. (2002) Nature 419:392.
Niederkofler V. et al. (2004) J. Neurosci. 24:808.
Brinks, H. et al. (2004) J. Neurosci. 24:3862.
Rajagopalan S. et al. (2004) Nat. Cell Biol. 6:756.
Matsunaga E. et al. (2004) Nat. Cell Biol. 6:749.
Babitt J.L. et al. (2005) J. Biol. Chem. 280(33):29820.
Repulsive Guidance Molecule A
Entrez Gene IDs
56963 (Human); 244058 (Mouse)
RGM domain family member A, RGM domain family, member A, RGM-A, RGMA, RGMrepulsive guidance molecule A
Which Brands are Currently Available on bio‑techne.com? R&D Systems, Tocris Bioscience and ProteinSimple branded products are available to purchase through bio‑techne.com. ProteinSimple branded instruments are available to quote. ACD branded products will be available on bio‑techne.com in the near future. Novus Biologicals branded products are not currently available on bio‑techne.com and can be found at novusbio.com.
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