RGM‑B in Neuro‑2A Mouse Cell Line. RGM‑B was detected in immersion fixed Neuro‑2A mouse neuroblastoma cell line using Sheep Anti-Mouse RGM‑B Biotinylated Antigen Affinity-purified Polyclonal Antibody (Catalog # BAF3597) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Streptavidin (red; Catalog # NL999) and counterstained with DAPI (blue). Specific staining was localized to cell surfaces. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Preparation and Storage
Reconstitute at 0.2 mg/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.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
RGM-B, also known as DRAGON, is a 40 kDa member of the repulsive guidance molecule (RGM) family of GPI-linked neuronal and muscle membrane proteins (1, 2). It is synthesized as a preproprotein that consists of a 48 amino acid (aa) signal sequence, a 367 aa mature region, and a 21 aa C-terminal prosegment (3). RGM-B contains two potential N-linked glycosylation sites and an abbreviated von Willebrand factor domain. Potential proteolytic cleavage within the VWF domain is supported by R&D Systems’ in house data (4). Within the region following the VWF domain, mouse RGM-B shares 49% and 43% aa sequence identity with RGM-A and RGM-C, respectively. It shares 90%, 79%, 92%, and 93% aa sequence identity with bovine, chicken, human, and rhesus macaque RGM-B, respectively. RGM-B is expressed in the developing and adult nervous system, particularly in the dorsal root ganglia and mantle layer of the spinal cord (3-5). In mouse, it shows a complementary, non-overlapping distribution with RGM-A (2-5). RGM-B is also expressed in fetal and adult enteric ganglia and in postnatal intestinal epithelium (6). RGM-B expression has been detected in neuronal cell bodies and proximal axonal segments (4) but is also present on the cell surface, where it interacts homophilically and mediates neuronal adhesion (3). RGM-B additionally functions as a BMP coreceptor. It directly binds BMP-2 and -4 but not other TGF-beta family proteins (7). RGM-B associates with BMP type I (ALK-2, -3, -6) and type II (Activin RIIA, Activin RIIB) receptors and enhances BMP signaling (7).
Monnier, P.P. et al. (2002) Nature 419:392.
Schmidtmer, J. and D. Engelkamp (2004) Gene Exp. Patterns 4:105.
Samad, T.A. et al. (2004) J. Neurosci. 24:2027.
Niederkofler, V. et al. (2004) J. Neurosci. 24:808.
Oldekamp, J. et al. (2004) Gene Exp. Patterns 4:283.
Metzger, M. et al. (2005) Dev. Dyn. 234:169.
Samad, T.A. et al. (2005) J. Biol. Chem. 280:14122.
Repulsive Guidance Molecule B
Entrez Gene IDs:
285704 (Human); 68799 (Mouse)
DKFZp434P228; Dragon; DRG11-responsive axonal guidance and outgrowth of neurite; RGM domain family, member B; RGMB
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