Overview
- Peptide (C)REVAPITRGQGDQR, corresponding to amino acid residues 623-636 of human PLXNA1 (Accession Q9UIW2). Extracellular, N-terminus.
Western blot analysis of rat (lanes 1 and 3) and mouse (lanes 2 and 4) brain synaptosomal fractions:1,2. Anti-Plexin-A1 (extracellular) Antibody (#APR-081), (1:400).
3,4. Anti-Plexin-A1 (extracellular) Antibody, preincubated with Plexin-A1 (extracellular) Blocking Peptide (#BLP-PR081).
Multiplex staining of GluN1 and Plexin-A1 in rat olfactory bulbImmunohistochemical staining of immersion-fixed, free floating rat brain frozen sections using Guinea pig Anti-NMDAR1 (GluN1) (extracellular) Antibody (#AGC-001-GP), (1:600) and rabbit Anti-Plexin-A1 (extracellular) Antibody (#APR-081), (1:400). A. GluN1 (green) is expressed in the glomeruli (horizontal arrows). B. PLXNA1 staining (red) in the same section, shows expression in the glomeruli (arrow) but also in other layers (vertical arrow) of the olfactory bulb. C. Merge of the two images showcases co-localization in the glomeruli vs. lack of co-localization in deeper layers of the olfactory bulb. Cell nuclei are stained with DAPI (blue).
Cell surface detection of PLXNA1 by indirect flow cytometry in live intact human THP-1 monocytic leukemia cells:___ Cells.
___ Cells + goat-anti-rabbit-FITC.
___ Cells + Anti-Plexin-A1 (extracellular) Antibody (#APR-081), (2.5μg) + goat-anti-rabbit-FITC.
- Turner, L.J. et al. (2004) J. Biol. Chem. 279,199.
- Murakami, Y. et al. (2001) Dev. Dyn. 220, 246.
- Aci-Seche, S. et al. (2014) PLoS ONE 9, e97779
- Ito, T. et al. (2014) Int. J. Mol. Med. 33, 1122.
The plexin family are transmembrane receptors, comprised four subfamilies: plexin-A, B, C, and D. In humans, three members of the plexin-A subfamily have been isolated: plexin-A1, A2, and A3. Plexin A1 is encoded by the PLXNA1 gene.
These receptors are characterized by the presence of a conserved intracellular domain of about 600 amino acids known as the sex and plexins domain. This domain is strikingly conserved across the plexin family and consists of two blocks of high sequence conservation separated by a variable linker. The ectodomains of the plexin-A subfamily possess three repeats of the cysteine cluster/Met-related sequences.
Plexins act as signal-transducing components containing transmembrane domain of six Gly residues constituting a GxGGGGG motif.
Plexins act as functional receptors for members of the semaphorin family. Together they transmit repulsive axon guidance signals for semaphorins inside the axonal growth cone. The plexins act together with their co-receptors, neuropilins. Plexin-A1, in combination with neuropilins exhibits various functions in axon guidance, organogenesis, angiogenesis, tumorigenesis, and immune regulation1-3.
Plexin-A1 also plays an important role in the developmental stages of chick heart by working as a receptor for one of the transmembrane semaphorins. In addition Plexin-A1 expressed in dendritic cells is involved in T-dendritic cell interactions in the immune system4.
Anti-Plexin-A1 (extracellular) Antibody (#APR-081) is a highly specific antibody directed against an epitope of the human protein. The antibody can be used in western blot and immunohistochemistry applications. The antibody recognizes an extracellular epitope and is thus ideal for detecting the protein in living cells. It has been designed to recognize PLXNA1 from mouse, rat and human samples.
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