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    NRP1

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    For Research Use Only. Not For Clinical Use.


    Background

    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.
    NRP1
    Protein class

    Cancer-related genes, CD markers, Plasma proteins, Transporters

    Predicted location

    Intracellular, Membrane, Secreted (different isoforms)

    Single cell type specificity

    Cell type enhanced (Adipocytes, Sertoli cells, Hepatic stellate cells, Endothelial cells)

    Immune cell specificity

    Immune cell enriched (plasmacytoid DC)

    Cell line specificity

    Cell line enhanced (fHDF/TERT166, hTERT-RPE1, TIME, U-87 MG)

    Interaction

    Homodimer, and heterodimer with NRP2 (PubMed:17989695). Interacts with FER (By similarity). Interacts with PLXNB1 (PubMed:10520995). Interacts with VEGFA (PubMed:26503042, PubMed:19805273). Interacts with ABCB8/MITOSUR in mitochondria (PubMed:30623799). (Microbial infection) Interacts with SARS coronavirus-2/SARS-CoV-2 spike protein S1 (via the CendR motif RRAR).

    Molecular function

    Developmental protein, Heparin-binding, Receptor

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