• Product name

    Anti-Neuropilin 1 antibody
    See all Neuropilin 1 primary antibodies
  • Description

    Rabbit polyclonal to Neuropilin 1
  • Host species

  • Specificity

    ab25998 is specific for Neuropilin 1. Immunogen sequence has low homology to Neuropilin 2.
  • Tested applications

    Suitable for: ICC/IF, IHC-P, ELISA, WBmore details
  • Species reactivity

    Reacts with: Mouse, Human
  • Immunogen

    Synthetic peptide, coupled to carrier protein, corresponding to amino acids within the N-terminal CUB domain of human Neuropilin 1. This sequence is highly conserved in rat and mouse Neuropilin 1.



Our Abpromise guarantee covers the use of ab25998 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF 1/200.
IHC-P 1/100. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
ELISA 1/2000.
WB 1/1000. Predicted molecular weight: 102 kDa.


  • Function

    The membrane-bound isoform 1 is a receptor involved in the development of the cardiovascular system, in angiogenesis, in the formation of certain neuronal circuits and in organogenesis outside the nervous system. It mediates the chemorepulsant activity of semaphorins. It binds to semaphorin 3A, The PLGF-2 isoform of PGF, The VEGF-165 isoform of VEGF and VEGF-B. Coexpression with KDR results in increased VEGF-165 binding to KDR as well as increased chemotaxis. It may regulate VEGF-induced angiogenesis.
    The soluble isoform 2 binds VEGF-165 and appears to inhibit its binding to cells. It may also induce apoptosis by sequestering VEGF-165. May bind as well various members of the semaphorin family. Its expression has an averse effect on blood vessel number and integrity.
  • Tissue specificity

    The expression of isoforms 1 and 2 does not seem to overlap. Isoform 1 is expressed by the blood vessels of different tissues. In the developing embryo it is found predominantly in the nervous system. In adult tissues, it is highly expressed in heart and placenta; moderately in lung, liver, skeletal muscle, kidney and pancreas; and low in adult brain. Isoform 2 is found in liver hepatocytes, kidney distal and proximal tubules.
  • Sequence similarities

    Belongs to the neuropilin family.
    Contains 2 CUB domains.
    Contains 2 F5/8 type C domains.
    Contains 1 MAM domain.
  • Cellular localization

    Secreted and Cell membrane.
  • Information by UniProt
  • Database links

  • Alternative names

    • A5 protein antibody
    • BDCA4 antibody
    • CD304 antibody
    • Neuropilin-1 antibody
    • Neuropilin1 antibody
    • NP1 antibody
    • NPN1 antibody
    • NRP 1 antibody
    • NRP antibody
    • NRP1 antibody
    • NRP1_HUMAN antibody
    • transmembrane receptor antibody
    • Vascular endothelial cell growth factor 165 receptor antibody
    • VEGF165R antibody
    see all


  • All lanes : Anti-Neuropilin 1 antibody (ab25998) at 1/500 dilution

    Lane 1 : Untransfected COS-7 cells
    Lane 2 : COS-7 cells transfected with HA-tagged Neuropilin 1

    Predicted band size: 102 kDa

  • ICC/IF image of ab25998 stained SHSY5Y cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab25998, 5µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

  • IHC image of ab25998 staining in human heart formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab25998, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.


This product has been referenced in:

  • Abu El-Asrar AM  et al. Galectin-1 studies in proliferative diabetic retinopathy. Acta Ophthalmol N/A:N/A (2019). Read more (PubMed: 31318490) »
  • Liu X  et al. Targeted delivery of Dicer-substrate siRNAs using a dual targeting peptide decorated dendrimer delivery system. Nanomedicine 10:1627-36 (2014). Read more (PubMed: 24965758) »
See all 5 Publications for this product

Customer reviews and Q&As

1-6 of 6 Abreviews or Q&A


Thank you for contacting us.

Could you please contact Lucerna and tell them to contact us with the order number? Unfortunately the order number 200701952 you have provided is not helpful in locating your order. Lucerna will be knowing the order number so please contact them.

I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

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The concentration is 0.5 mg/ml. The antibody is titered to work at specific dilutions. This is why concentration is not mentioned on the datasheet. I have updated the datasheet with dilutions only to reflect this more clearly. For ICC/IF recommended dilution to start at is 1/200.

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We used a transfection model using an HA-tagged human Neuropilin 1 sequence. The expressed protein ran near 130 kDa, similar to the observed molecular weight found in other studies (Proc. Natl. Acad. Sci. U.S.A. 97:2573-2578(2000)).

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Western blot
Human Cell lysate - whole cell (HUVEC and HAEC)
Loading amount
25 µg
with or without VEGF
Gel Running Conditions
Reduced Denaturing
Blocking step
Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 25°C

Abcam user community

Verified customer

Submitted Oct 31 2007


The concentration of this antibody is titrated to the dilution specified on our datasheet, so we do not otherwise provide the concentration. If you have specific questions about the titer, then let us know.

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Thank you for your enquiry. The concentration was not determined for this antibody as it was titrated to work at the following dilutions for these applications: ELISA 1/2000 and Western blot 1/500. Please contact us again if you have additional questions.

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