Mouse ROBO3 Antibody

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Detection of Mouse ROBO3 by Western Blot.
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Product Details
Citations (8)
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Mouse ROBO3 Antibody Summary

Species Reactivity
Detects mouse ROBO3 in direct ELISAs and Western blots. In direct ELISAs, approximately 40% cross-reactivity with recombinant human (rh) ROBO3 and less than 5% cross-reactivity with rhROBO2 and rhROBO4 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived mouse ROBO3
Accession # Q9Z2I4
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.5 µg/mL
See below
5-15 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Mouse ROBO3 antibody by Western Blot. View Larger

Detection of Mouse ROBO3 by Western Blot. Western blot shows lysates of Neuro-2A mouse neuroblastoma cell line. PVDF Membrane was probed with 0.5 µg/mL of Mouse ROBO3 Antigen Affinity-purified Polyclonal Antibody (Catalog # Af3155) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for ROBO3 at approximately 205 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Immunohistochemistry ROBO3 antibody in Mouse Embryo by Immunohistochemistry (IHC-Fr). View Larger

ROBO3 in Mouse Embryo. ROBO3 was detected in immersion fixed frozen sections of mouse embryo (E11.5) using Mouse ROBO3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3155) at 25 µg/mL overnight at 4 °C. Tissue was stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red, upper panel; Catalog # NL001) and counterstained with DAPI (blue, lower panel). Specific staining was localized to developing forebrain. View our protocol for Fluorescent IHC Staining of Frozen Tissue Sections.

Reconstitution Calculator

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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. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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.

Background: ROBO3

Mouse ROBO3 (also named Rig-1) is a 200 kDa member of the ROBO family of guidance molecules (1‑3). The term ROBO derives from round-about, a description of the circuitous pathway axons take in the absence of a functional ROBO gene (3, 4). Mouse ROBO3 is a type I transmembrane glycoprotein that is synthesized as a 1366 amino acid (aa) precursor. It contains a 20 aa signal sequence, an 871 aa extracellular domain (ECD), a 21 aa transmembrane segment, and a 454 aa cytoplasmic region (5, 6). The ECD contains five C2-type Ig-like domains (aa 64‑531) and three fibronectin (FN) type III domains (aa 555‑863). The cytoplasmic region contains three of four possible 15‑20 aa long CC (conserved cytoplasmic) motifs that are found in ROBO-1 (7, 8). Mouse ROBO3 has multiple isoforms. An alternate start site generates an 1366 aa (precursor) A isoform and a 1344 aa (precursor) B isoform. These two forms only differ in the first 53 and 31 amino acids of the precursor, respectively (9). There are reportedly nine splice variants in the mouse ROBO3 gene. Three result in soluble forms. Little information exists about the isoforms. Mouse ROBO3 ECD is 95%, 84% and 86% aa identical to the ROBO3 ECD in rat, human and canine, respectively. Normally, axons originating on one side of the spinal cord are inhibited from crossing to the other side by a SLIT2-ROBO1 interaction at the midline. ROBO3 is permissive for this event. It is unclear how this is accomplished. One possibility is that it binds directly to ROBO-1, blocking SLIT activation. A second possibility involves ROBO3 binding to SLIT2 in a nonproductive interaction. In human, only ROBO3 Form B is known to bind to SLIT2 (9‑11).

  1. Rajagopalan, S. et al. (2000) Neuron 28:767.
  2. Guthrie, S. (2004) Curr. Biol. 14:R632.
  3. Guthrie, S. (2001) Curr. Biol. 11:R300.
  4. Seeger, M. et al. (1993) Neuron 10:409.
  5. Yuan, S-S.F. et al. (1999) Dev. Biol. 207:62.
  6. SwissProt. Accession # Q9Z2I4.
  7. Bashaw, G.J. et al. (2000) Cell 101:703.
  8. Kidd, T. et al. (1998) Cell 92:205.
  9. Camurri, L. et al. (2005) Mol. Cell. Neurosci. 30:485.
  10. Sabatier, C. et al. (2004) Cell 117:157.
  11. Mambetisaeva, E.T. et al. (2005) Dev. Dyn. 233:41.
Long Name
Roundabout Homolog 3
Entrez Gene IDs
64221 (Human); 19649 (Mouse)
Alternate Names
FLJ21044; HGPPS; HGPS; RBIG1horizontal gaze palsy with progressive scoliosis; retinoblastoma inhibiting gene 1; RIG1; ROBO3; roundabout (axon guidance receptor, Drosophila) homolog 3; roundabout homolog 3; roundabout, axon guidance receptor, homolog 3 (Drosophila); Roundabout-like protein 3

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Citations for Mouse ROBO3 Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

8 Citations: Showing 1 - 8
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  1. Thyroid hormone rewires cortical circuits to coordinate body-wide metabolism and exploratory drive
    Authors: Hochbaum, DR;Dubinsky, AC;Farnsworth, HC;Hulshof, L;Kleinberg, G;Urke, A;Wang, W;Hakim, R;Robertson, K;Park, C;Solberg, A;Yang, Y;Baynard, C;Nadaf, NM;Beron, CC;Girasole, AE;Chantranupong, L;Cortopassi, M;Prouty, S;Geistlinger, L;Banks, A;Scanlan, T;Greenberg, ME;Boulting, GL;Macosko, EZ;Sabatini, BL;
    bioRxiv : the preprint server for biology
    Species: Mouse
    Sample Types: Tissue Homogenates
    Applications: Western Blot
  2. Cbln1 regulates axon growth and guidance in multiple neural regions
    Authors: P Han, Y She, Z Yang, M Zhuang, Q Wang, X Luo, C Yin, J Zhu, SR Jaffrey, SJ Ji
    PloS Biology, 2022-11-17;20(11):e3001853.
    Species: Transgenic Mouse
    Sample Types: Whole Tissue
    Applications: IHC
  3. The histone deacetylase complex MiDAC regulates a neurodevelopmental gene expression program to control neurite outgrowth
    Authors: B Mondal, H Jin, S Kallappago, Y Sedkov, T Martinez, MF Sentmanat, GJ Poet, C Li, Y Fan, SM Pruett-Mil, HM Herz
    Elife, 2020-04-16;9(0):.
    Species: Mouse
    Sample Types: Cell Lysates, Whole Cells
    Applications: Blocking, Western Blot
  4. NELL2-Robo3 complex structure reveals mechanisms of receptor activation for axon guidance
    Authors: JS Pak, ZJ DeLoughery, J Wang, N Acharya, Y Park, A Jaworski, E Özkan
    Nat Commun, 2020-03-20;11(1):1489.
    Species: Mouse
    Sample Types: Whole Tissue
    Applications: IHC
  5. A-kinase Anchoring Protein 79/150 Recruits Protein Kinase C to Phosphorylate Roundabout Receptors.
    Authors: Samelson B, Gore B, Whiting J, Nygren P, Purkey A, Colledge M, Langeberg L, Dell'Acqua M, Zweifel L, Scott J
    J Biol Chem, 2015-04-16;290(22):14107-19.
    Species: Mouse
    Sample Types: Whole Tissue
    Applications: IHC-P
  6. Dbx1 triggers crucial molecular programs required for midline crossing by midbrain commissural axons.
    Authors: Inamata, Yasuyuki, Shirasaki, Ryuichi
    Development, 2014-02-19;141(6):1260-71.
    Species: Mouse
    Sample Types: Whole Tissue
    Applications: IHC
  7. Slit2 and Robo3 modulate the migration of GnRH-secreting neurons.
    Authors: Cariboni, Anna, Andrews, William, Memi, Fani, Ypsilanti, Athena R, Zelina, Pavol, Chedotal, Alain, Parnavelas, John G
    Development, 2012-09-01;139(18):3326-31.
    Species: Mouse
    Sample Types: Whole Tissue
    Applications: IHC-Fr
  8. Neural RNA-binding protein Musashi1 controls midline crossing of precerebellar neurons through posttranscriptional regulation of Robo3/Rig-1 expression.
    Authors: Kuwako K, Kakumoto K, Imai T
    Neuron, 2010-08-12;67(3):407-21.
    Species: Mouse
    Sample Types: Tissue Homogenates, Whole Tissue
    Applications: IHC-Fr, Western Blot


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