Mouse Neuropilin-1 PE-conjugated Antibody

  
  • Specificity
    Detects mouse Neuropilin-1 in direct ELISAs. In direct ELISAs, less than 5% cross-reactivity with recombinant rat (rr) Neuropilin-1 is observed and no cross-reactivity with recombinant human (rh) Neuropilin-1, rhNeuropilin-2, or rrNeuropilin-2 is observed.
  • Source
    Monoclonal Rat IgG2a Clone # 761705
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant mouse Neuropilin-1
    Phe21-Pro856
    Accession # P97333
  • Formulation
    Supplied in a saline solution containing BSA and Sodium Azide.
  • Label
    Phycoerythrin
Applications
  •  
    Recommended
    Concentration
    Sample
  • Flow Cytometry
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.
Preparation and Storage
  • Stability & Storage
    Store the unopened product at 2 - 8° C. Do not use past expiration date. Protect from light.
Background: Neuropilin-1
Neuropilin-1 (Nrp-1, previously neuropilin; also CD304) is a 130 - 140 kDa type I transmembrane (TM) glycoprotein that regulates axon guidance and angiogenesis (1 - 4). The full-length 923 amino acid (aa) mouse Nrp-1 contains a 623 aa extracellular domain (ECD) that shares 98% aa identity with rat and 93% aa identity with human, equine, bovine and canine Nrp-1 (3, 4). The ECD contains two N-terminal CUB domains (termed a1a2), two domains with homology to coagulation factors V and VIII (b1b2) and a MAM (meprin) domain (c). At least one splice variant that diverges at aa 587 and lacks the TM domain has been sequenced (5). This form is potentially a soluble antagonist, based on results from human Nrp-1 splice variants (1, 6 - 8). The sema domains of Class III secreted semaphorins such as Sema3A bind Nrp-1 a1a2 (9). Heparin, the heparin-binding forms of VEGF (VEGF165, VEGF-B and VEGF-E), PlGF (PlGF2), and the C-terminus of Sema3 bind the b1b2 region (9, 10). Nrp-1 and Nrp-2 share 48% aa identity within the ECD and can form homo- and hetero-oligomers via interaction of their MAM domains (1). Neuropilins show partially overlapping expression in neuronal and endothelial cells during development (1, 2). Both neuropilins act as co-receptors with plexins, mainly plexin A3 and A4, to bind class III semaphorins that mediate axon repulsion (11). However, only Nrp-1 binds Sema3A, and only Nrp-2 binds Sema3F (1). Both are co-receptors with VEGF R2 (also called KDR or Flk-1) for VEGF165 binding (1). Sema3A signaling can be blocked by VEGF165, which has higher affinity for Npn-1 (12). Nrp-1 is preferentially expressed in developing or remodeling arteries (1, 2). Nrp-1 is also expressed on dendritic cells and mediates DC-induced T cell proliferation (13).
  • References:
    1. Bielenberg, D.R. et al. (2006) Exp. Cell Res. 312:584. 
    2. Gu, C. et al. (2003) Dev. Cell 5:45. 
    3. He, Z. and M. Tessier-Lavigne (1997) Cell 90:739.
    4. Soker, S. et al. (1998) Cell 92:735.
    5. Entrez accession #EDL11827
    6. Gagnon, M.L. et al. (2000) Proc. Natl. Acad. Sci. USA 97:2573. 
    7. Cackowski, F.C. et al. (2004) Genomics 84:82. 
    8. Rossignol, M. et al. (2000) Genomics 70:211.
    9. Gu, C. et al. (2002) J. Biol. Chem. 277:18069.
    10. Mamluk, R. et al. (2002) J. Biol. Chem. 277:24818.
    11. Yaron, A. et al. (2005) Neuron 45:513.
    12. Narazaki, M. and G. Tosato (2006) Blood 107:3892.
    13. Tordjman, R. et al. (2002) Nat. Immunol. 3477.
  • Entrez Gene IDs:
    8829 (Human); 18186 (Mouse); 246331 (Rat)
  • Alternate Names:
    BDCA-4; CD304; NRP1; BDCA4; CD304 antigen; DKFZp686A03134; DKFZp781F1414; neuropilin 1; neuropilin-1; NRPNP1; transmembrane receptor; Vascular endothelial cell growth factor 165 receptor; VEGF165RCD304
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Staining Reagents
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Flow Cytometry Staining Buffer (1X)

Flow FC001 3
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Flow Cytometry Mouse Lyse Buffer (10X)

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Flow Cytometry Human Lyse Buffer (10X)

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