Human/Mouse Plexin A1 Antibody Summary
Ser28-Pro1242
Accession # P70206
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Applications
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples

Detection of Mouse Plexin A1 by Western Blot. Western blot shows lysates of mouse embryonic heart tissue. PVDF Membrane was probed with 1 µg/mL of Mouse Plexin A1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4309) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for Plexin A1 at approximately 200 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Plexin A1 in Human Dendritic Cells. Plexin A1 was detected in immersion fixed immature human dendritic cells using Goat Anti-Mouse Plexin A1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4309) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cell surfaces and cytoplasm. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.

Plexin A1 in Mouse Spinal Cord. Plexin A1 was detected in immersion fixed frozen sections of embryonic mouse spinal cord using Mouse Plexin A1 Affinity-purified Polyclonal Antibody (Catalog # AF4309) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.
Reconstitution Calculator
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Plexin A1
Plexin A1 (formerly Plexin 1) is a 200 kDa type I transmembrane protein that is a member of the Plexin family of Semaphorin signal transducers (1). Plexin signaling induces cytoskeletal remodeling, which mediates cell migration and axon repulsion (2). The mouse Plexin A1 cDNA encodes 1894 amino acids (aa) including a 27 aa signal sequence, a 1215 aa extracellular domain (ECD) with one Sema domain, a spacer, and four tandem IPT/TIG domains, a 21 aa transmembrane segment, and a 631 aa cytoplasmic domain (1). Within the ECD, human Plexin A1 shares 95%, 95%, 92%, 80% and 79% aa sequence identity with mouse, rat, bovine, chicken and Xenopus Plexin A1, respectively. The four mouse Plexin A molecules share 59‑67% aa identity with each other. Plexin A1 binds Class 3 (secreted) Semaphorins indirectly via Neuropilin (Npn)-1 and Npn-2, and binds transmembrane Semaphorin 6D directly (3‑5). Sema3A engagement of Plexin A1 and Npn-1 guides proprioceptive and sensory neurons during development, while Sema3B engagement guides floorplate neurons (5‑8). In contrast, T cell Sema6D engagement of dendritic cell Plexin A1 controls actin polymeration, which supports formation of immunological synapses and enhances the function of the dendritic cells (3, 4, 9). Complex formation with DAP12 allows Plexin A1 signaling through TREM family proteins (10, 11). However, the most striking effect of Plexin A1 deletion is on bone homeostasis, where Plexin A1-deficient mice show increased trabecular bone mass due to downregulated osteoclast differentiation (10). Plexin A1 and Sema6D are frequently expressed in malignant pleural mesothelioma, where they promote anchorage-independent growth through complexing with and activating VEGF R2 (12).
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- Kruger, R.P. et al. (2005) Nat. Rev. Mol. Cell Biol. 6:789.
- Takamatsu, H. et al. (2010) Cell. Mol. Immunol. 7:83.
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- Takahashi, T. et al. (1999) Cell 99:59.
- Yoshida, Y. et al. (2006) Neuron 52:775.
- Toyofuku, T. et al. (2005) Nat. Neurosci. 8:1712.
- Nawabi, H. et al. (2010) Genes Dev. 24:396.
- Eun, S-Y. et al. (2006) J. Immunol. 177:4271.
- Takegahara, N. et al. (2006) Nat. Cell Biol. 8:615.
- Watarai, H. et al. (2008) Proc. Natl. Acad. Sci. USA 105:2993.
- Catalano, A. et al. (2009) Cancer Res. 69:1485.
Product Datasheets
Citations for Human/Mouse Plexin A1 Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
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Vinaxanthone inhibits Semaphorin3A induced axonal growth cone collapse in embryonic neurons but fails to block its growth promoting effects on adult neurons
Authors: E Ivakhnitsk, MR Chin, D Siegel, VH Guaiquil
Scientific Reports, 2021;11(1):13019.
Species: Human
Sample Types: Whole Cells
Applications: ICC -
PlexinA1 deficiency in BALB/cAJ mice leads to excessive self-grooming and reduced prepulse inhibition
Authors: MS Jahan, T Ito, S Ichihashi, T Masuda, MER Bhuiyan, I Takahashi, H Takamatsu, A Kumanogoh, T Tsuzuki, T Negishi, K Yukawa
IBRO Reports, 2020;9(0):276-289.
Species: Mouse
Sample Types: Tissue Homogenates
Applications: Western Blot -
Synapse type-specific proteomic dissection identifies IgSF8 as a hippocampal CA3 microcircuit organizer
Authors: N Apóstolo, SN Smukowski, J Vanderlind, G Condomitti, V Rybakin, J Ten Bos, L Trobiani, S Portegies, KM Vennekens, NV Gounko, D Comoletti, KD Wierda, JN Savas, J de Wit
Nat Commun, 2020;11(1):5171.
Species: Mouse
Sample Types: Cell Lysates
Applications: Western Blot -
PlexinA1 is crucial for the midline crossing of callosal axons during corpus callosum development in BALB/cAJ mice
Authors: MM Hossain, T Tsuzuki, K Sakakibara, F Imaizumi, A Ikegaya, M Inagaki, I Takahashi, T Ito, H Takamatsu, A Kumanogoh, T Negishi, K Yukawa
PLoS ONE, 2019;14(8):e0221440.
Species: Mouse
Sample Types: Tissue Homogenates
Applications: Western Blot -
Semaphorin-5B Controls Spiral Ganglion Neuron Branch Refinement During Development
Authors: JS Jung, KD Zhang, Z Wang, M McMurray, A Tkaczuk, Y Ogawa, R Hertzano, TM Coate
J. Neurosci., 2019;0(0):.
Species: Mouse
Sample Types: Whole Tissue
Applications: IHC
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