Recombinant Rat Neuropilin-1 Fc Chimera (NS0-expressed), CF

Catalog # Availability Size / Price Qty
566-NNS-025
Product Details
Citations (3)
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Recombinant Rat Neuropilin-1 Fc Chimera (NS0-expressed), CF Summary

Purity
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<0.01 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its binding ability in a functional ELISA. Immobilized rrNpn-1/Fc Chimera at 2 µg/mL (100 µL/well) can bind rhVEGF165 in the presence of 2 µg/mL of heparin with an apparent KD <1 nM.
Source
Mouse myeloma cell line, NS0-derived rat Neuropilin-1 protein
Rat Neuropilin-1
(Phe22 - Ala810)
Accession # Q9QWJ9
R Rat Neuropilin-1
(Ser829 - Asp854)
Accession # Q9QWJ9
IEGRDMD Human IgG1
(Pro100 - Lys330)
6-His tag
N-terminus C-terminus

R&D Systems rat Npn-1 may represent a previously unreported splice isoform of rat Npn-1.
Accession #
N-terminal Sequence
Analysis
Phe22
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
119 kDa (monomer)
SDS-PAGE
130-150 kDa, reducing conditions

Product Datasheets

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. 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 could interfere.

566-NNS

Formulation Lyophilized from a 0.2 μm filtered solution in Citrate Phosphate and NaCl.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping 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.
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Reconstitution Calculator

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Background: Neuropilin-1

Neuropilin-1 (Npn-1, previously neuropilin; also named CD304) is a 130 - 140 kDa type I transmembrane (TM) glycoprotein that regulates axon guidance and angiogenesis (1 - 4). The full-length 922 amino acid (aa) rat Npn-1 contains a 623 aa extracellular domain (ECD) that shares 98% aa identity with mouse and 93% aa identity with human, equine, bovine and canine Npn-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). In mouse and human, splice variants that lack the TM domain have been described and are either proven or presumed to be soluble antagonists (1, 5 - 7). The sema domains of Class III secreted semaphorins such as Sema3A bind Npn-1 a1a2 (8). 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 (8, 9). Npn-1 and Npn-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 asco-receptors with plexins, mainly plexin A3 and A4, to bind class III semaphorins that mediate axon repulsion (10). However, only Npn-1 binds Sema3A, and only Npn-2 binds Sema3F (1). Both areco-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 (11). Npn-1 is preferentially expressed in developing or remodeling arteries (1, 2). Npn-1 is also expressed on dendritic cells and mediates DC-induced T cell proliferation (12).

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. Gagnon, M.L. et al. (2000) Proc. Natl. Acad. Sci. USA 97:2573. 
  6. Cackowski, F.C. et al. (2004) Genomics 84:82. 
  7. Rossignol, M. et al. (2000) Genomics 70:211.
  8. Gu, C. et al. (2002) J. Biol. Chem. 277:18069.
  9. Mamluk, R. et al. (2002) J. Biol. Chem. 277:24818.
  10. Yaron, A. et al. (2005) Neuron 45:513.
  11. Narazaki, M. and G. Tosato (2006) Blood 107:3892.
  12. Tordjman, R. et al. (2002) Nat. Immunol. 3477.
Entrez Gene IDs
8829 (Human); 18186 (Mouse); 246331 (Rat); 100286859 (Porcine)
Alternate Names
BDCA4; BDCA-4; CD304 antigen; CD304; DKFZp686A03134; DKFZp781F1414; neuropilin 1; Neuropilin1; Neuropilin-1; NRP1; NRPNP1; transmembrane receptor; Vascular endothelial cell growth factor 165 receptor; VEGF165RCD304

Citations for Recombinant Rat Neuropilin-1 Fc Chimera (NS0-expressed), CF

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.

3 Citations: Showing 1 - 3
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  1. Exogenous recombinant dimeric neuropilin-1 is sufficient to drive angiogenesis.
    Authors: Uniewicz KA, Cross MJ, Fernig DG
    J. Biol. Chem., 2011;286(1):12-23.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  2. Sulfated polysaccharides identified as inducers of neuropilin-1 internalization and functional inhibition of VEGF165 and semaphorin3A.
    Authors: Narazaki M, Segarra M, Tosato G
    Blood, 2008;111(8):4126-36.
    Species: Human
    Sample Types: Recombinant Protein
    Applications: Binding Assay
  3. In vivo analysis reveals a critical role for neuropilin-1 in cranial neural crest cell migration in chick.
    Authors: McLennan R, Kulesa PM
    Dev. Biol., 2007;301(1):227-39.
    Species: Chicken
    Sample Types: In Vivo
    Applications: In Vivo

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