Bioactive grade

Recombinant human Neuropilin 1 protein (Active) (Biotin) (ab246144)


  • Product name

    Recombinant human Neuropilin 1 protein (Active) (Biotin)
    See all Neuropilin 1 proteins and peptides
  • Biological activity

    Immobilized Human VEGF165, Tag Free at 2 μg/mL (100 μL/well) can bind ab246144 with a linear range of 0.5-16 ng/mL.

  • Purity

    > 95 % SDS-PAGE.
    The biotin to protein ratio is 0.5-1 as determined by the HABA assay.
  • Endotoxin level

    < 1.000 Eu/µg
  • Expression system

    HEK 293 cells
  • Accession

  • Protein length

    Protein fragment
  • Animal free

  • Nature

    • Species

    • Predicted molecular weight

      74 kDa including tags
    • Amino acids

      22 to 644
    • Tags

      His tag C-Terminus , Avi tag C-Terminus
    • Additional sequence information

      AviTag sequence: GLNDIFEAQKIEWHE.
  • Conjugation



Our Abpromise guarantee covers the use of ab246144 in the following tested applications.

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

  • Applications

    Functional Studies


  • Form

  • Additional notes

    Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon reconsitution add a carrier protein (0.1% BSA). Store at -20°C or -80°C. Avoid freeze / thaw cycle. Store In the Dark.

    pH: 7.4
    Constituents: PBS, 5% Trehalose

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

  • Reconstitution
    It is recommended to reconstitute the lyophilized product in 1000 ul sterile deionized water to a final concentration of 1 mg/ml. Solubilize for 30 to 60 minutes at room temperature with occasional gentle mixing. Carrier protein (0.1% HSA or BSA) is strongly recommended for further dilution and long term storage.

General Info

  • Alternative names

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


  • SDS-PAGE - Human Neuropilin 1 protein (Active) (Biotin) (ab246144).

    The gel was stained overnight with Coomassie Blue.

    The protein has a calculated MW of 73.5 kDa. The protein migrates as 90-100 kDa under reducing conditions due to glycosylation.

  • Immobilized Human VEGF165, Tag Free at 2 μg/mL (100 μL/well) can bind ab246144 with a linear range of 0.5-16 ng/mL.


ab246144 has not yet been referenced specifically in any publications.

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