ROBO4 Antibody (265721) [Alexa Fluor® 350]

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Flow
Clone
265721
Clonality
Monoclonal
Host
Mouse
Conjugate
Alexa Fluor 350
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.

ROBO4 Antibody (265721) [Alexa Fluor® 350] Summary

Immunogen
Mouse myeloma cell line NS0-derived recombinant human ROBO4
Gln28-Arg467
Accession # Q8WZ75
Specificity
Detects human ROBO4 in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant rat ROBO1, recombinant human (rh) ROBO2, or rhROBO3 is observed.
Isotype
IgG2b
Clonality
Monoclonal
Host
Mouse
Gene
ROBO4
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Flow Cytometry 0.25-1 ug/10^6 cells
Application Notes
Flow Cytometry: Please use 0.25-1 ug of conjugated antibody per 10e6 cells.

Packaging, Storage & Formulations

Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Buffer
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Preservative
0.09% Sodium Azide
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for ROBO4 Antibody (265721) [Alexa Fluor® 350]

  • ECSM4
  • FLJ20798
  • Magic roundabout
  • MGC133352
  • MGC133353
  • MRB
  • ROBO4
  • roundabout homolog 4
  • roundabout homolog 4, magic roundabout (Drosophila)

Background

ROBO4, also called magic roundabout, is a ~150 kDa glycoprotein belonging to the ROBO family (1). ROBOs are molecular guidance receptors that typically interact with Slit ligands to regulate axon guidance and neuronal migration (2). Unlike other family members, ROBO4 is mainly restricted to the vascular endothelium (1, 2). Expression in early hematopoietic progenitors is also reported (3). The human ROBO4 cDNA encodes 1012 amino acids (aa), including a 27 aa signal sequence, a 440 aa extracellular domain (ECD) containing two C2‑type Ig domains and two fibronectin type III (FNIII) domains, a transmembrane domain and an intracellular domain. ROBO4 diverges from other ROBO proteins in the number of Ig, FNIII and cytoplasmic CC domains (1, 4). Within the ECD, human ROBO4 shares 80%, 80%, 87% and 88% aa identity with mouse, rat, bovine and canine ROBO4, respectively. Vascular endothelial ROBO4 is expressed at highest levels in during development and vascular remodeling, including tumor angiogenesis (1, 2, 4‑6). It is proposed to contribute to vascular stability. Consistent with this, endogenous ROBO4 is concentrated in the vascular stalk and sprouts rather than tip cells and appears to protect newly formed blood vessels against VEGF‑induced vascular leak (6‑9). ROBO4 binding of Slit proteins has been variably reported, and when detected may be mediated by ROBO4/ROBO1 heterodimers (2, 4‑7, 9‑13). ROBO4 is also variably reported to stimulate or inhibit cell migration or filopodia formation (2, 4‑13). Effects on cell movement may be mediated through intracellular binding of WASP‑, Ras/Rac/Rho‑, Mena‑, Src‑ or Paxillin‑related proteins, all of which affect the cytoskeleton (5‑7, 10‑12). Recombinant soluble ROBO4 ECD can antagonize endothelial cell migration and in-vivo angiogenesis (13). 
  1. Huminiecki, L. et al. (2002) Genomics 79:547.
  2. Legg, J.A. et al. (2008) Angiogenesis 11:13.
  3. Shibata, F. et al. (2009) Stem Cells 27:183.
  4. Park, K.W. et al. (2003) Dev. Biol. 261:251.
  5. Seth, P. et al. (2005) Biochem. Biophys. Res. Commun. 332:533.
  6. Jones, C.A. et al. (2008) Nat. Med. 14:448.
  7. Jones, C.A. et al. (2009) Nat. Cell Biol. 11:1325.
  8. Chen, H. et al. (2010) Adv. Exp. Med. Biol. 664:457.
  9. London, N.R. et al. (2009) J. Thromb. Haemost. 7:57.
  10. Verissimo, A.R. et al. (2009) Biochem. Soc. Trans. 37:1214.
  11. Sheldon, H. et al. (2009) FASEB J. 23:513.
  12. Kaur, S. et al. (2008) BMC Cell Biol. 9:61.
  13. Suchting, S. et al. (2005) FASEB J. 19:121.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Bioinformatics

Gene Symbol ROBO4
Entrez
Uniprot