Neuropilin-1 Recombinant Protein Antigen

• Reactivity: Hu
• Applications: AC

Neuropilin-1 Recombinant Protein Antigen Summary

• Description: A recombinant protein antigen with a N-terminal His6-ABP tag corresponding to human NRP1.
  
  

  Source: E. coli

  Amino Acid Sequence: EGRVLLHKSLKLYQVIFEGEIGKGNLGGIAVDDISINNHISQEDCAKPADLDKKNPEIKIDETGSTPGYEGEGE

  Fusion Tag: N-terminal His6ABP (ABP = Albumin Binding Protein derived from Streptococcal Protein G)

  This product is intended to be used as a blocking antigen for antibody competition assays. Any other use of this antigen is done at the risk of the user. The use of this product for commercial production is strictly prohibited. Please contact technical support if you have any questions.

• Source: E. coli
• Protein/Peptide Type: Recombinant Protein Antigen
• Gene: NRP1
• Purity: >80% by SDS-PAGE and Coomassie blue staining

Applications/Dilutions

• Dilutions:
  • Antibody Competition 10 - 100 molar excess
• Application Notes: This recombinant antigen is only intended to be used as a blocking agent to confirm antibody specificity with the corresponding antibody, catalog number NBP1-85763.

  It is purified by IMAC chromatography, and the expected concentration is greater than 0.5 mg/ml.

  For current lot information, including availability, please contact our technical support team click nb-technical@bio-techne.com

• Theoretical MW: 26 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

• Storage: Store at -20C. Avoid freeze-thaw cycles.
• Buffer: PBS and 1M Urea, pH 7.4.
• Preservative: No Preservative
• Purity: >80% by SDS-PAGE and Coomassie blue staining

Alternate Names for Neuropilin-1 Recombinant Protein Antigen

• BDCA4
• BDCA-4
• CD304 antigen
• CD304
• DKFZp686A03134
• DKFZp781F1414
• neuropilin 1
• Neuropilin1
• Neuropilin-1
• NP1
• NRP
• NRP1
• transmembrane receptor
• Vascular endothelial cell growth factor 165 receptor
• VEGF165R

Background

Neuropilin-1 (also known as Npn-1, NRP1, neuropilin, or CD304/BDCA4) is a 923 amino acid (aa) type I transmembrane glycoprotein (theoretical molecular weight 130-140 kDa) located on human chromosome 10p11.22 that encodes multiple intact and soluble isoforms. The 623 aa extracellular domain (ECD) of this human cell surface receptor includes two CUB (complement-binding) domains, two F5/8 domains with homology to coagulation factors V and VIII, and a MAM (meprin) domain. The ECD of human Neuropilin-1 shares 92-95% aa sequence identity with mouse, rat, bovine, and canine Npn-1. The MAM domains of neuropilins are involved in the formation of homo- and hetero-oligomers in the absence of ligands. Neuropilin-1 expression is found in neuronal, endothelial and tumor cells as well as epithelial cells such as in the respiratory, gastrointestinal, lower urological tracts, thyroid, parathyroid and thymus gland (1,2).
Initially found to play an essential role in axon growth and guidance, NRP1 serves as a multifunctional co-receptor for class III semaphorins and heparin-binding members of the VEGF family, participating in regulation of angiogenesis, neuronal development, cell survival, migration and tumor-invasion. Neuropilin-1 has been implicated in viral infections and T-cell activation and is also described as a marker of regulatory T (Treg) cells (3). In COVID-19 infections, studies have shown NRP1 participates in viral infection via NRP1 neutralizing antibodies and binds the SARS-CoV-2 Spike protein, suggesting NRP1 may contribute to viral transport and viral internalization by endocytosis (4).

References

1. Wild JRL, Staton CA, Chapple K, Corfe BM. (2012) Neuropilins: Expression and Roles in the Epithelium. Int J Exp Pathol. 93(2):81-103. PMID: 22414290

2. Bielenberg DR, Pettaway CA, Takashima S, Klagsbrun M. (2006) Neuropilins in Neoplasms: Expression, Regulation, and Function. Exp Cell Res. 312(5):584-93. PMID: 16445911

3. Tordjman R, Lepelletier Y, Lemarchandel V, Cambot M, Gaulard P, Hermine O, Romeo P-H. (2002). A Neuronal Receptor, neuropilin-1, Is Essential for the Initiation of the Primary Immune Response. Nat Immunol. 3(5):477-82. PMID: 11953749

4. Coronavirus research updates: Test frequency matters more than test sensitivity for stopping outbreaks. 2002 June 26. Nature.com

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.

FAQs for Neuropilin-1 Recombinant Protein Antigen (NBP1-85763PEP). (Showing 1 - 2 of 2 FAQ).

1. If this product is used in an application or species as a part of a customer review, will that validate this product in the application/species?
   • If any of our primary antibodes are used in an untested application or species and it is shown to work through images from customer reviews or through publications, this validates the application/species for this product. Please check out our Innovator's Reward Program if you decide to test an antibody with a species or application that is not currently listed.
2. What research areas can Neuropilin-1 antibodies be used in?
   • Neuropilin-1 products can be applied in the following research areas: Adaptive Immunity, Angiogenesis, Breast Cancer, Cancer, Cardiovascular Biology, Neuroscience, and Virology Bacteria and Parasites.

Bioinformatics

• Gene Symbol: NRP1