Mouse CD300a/LMIR1 Antibody Summary
Leu28-Arg183
Accession # BAC80268
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.
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: CD300a/LMIR1
CD300a, also known as LMIR1, CMRF-35H, IRp60, CLM-8, and MAIR-I, is a 60 kDa glycoprotein member of the immunoglobulin superfamily (1). Mouse CD300a consists of a 158 amino acid (aa) extracellular domain (ECD) with one Ig-like V-type domain, a 21 aa transmembrane segment, and a 112 aa cytoplasmic domain that contains three immunoreceptor tyrosine-based inhibitory motifs (ITIMs) and a non-canonical ITIM (2, 3). Within the ECD, mouse CD300a shares 40% and 66% aa sequence identity with human and rat CD300a, respectively. Alternate splicing generates an additional mouse CD300a isoform with a 4 aa deletion following the Ig-like domain (3). In mouse, CD300a is expressed on peripheral eosinophils, mast cells, neutrophils, dendritic cells, macrophages, and some B cells (2‑4). Antibody cross‑linking of CD300a induces phosphorylation of tyrosine residues in the cytoplasmic domain. This leads to the recruitment of phosphatases SHIP, SHP-1, and SHP-2 and inhibition of NK cell, eosinophil, and mast cell activation (2, 3, 5‑7). Cross‑linking of CD300a to other surface proteins such as SCF R or Fc epsilon RI on mast cells, Fc gamma RIIA on neutrophils, or CCR3 on mast cells and eosinophils inhibits downstream signaling from those receptors (4, 8‑10). CD300a cross‑linking also limits the in vivo activities of these cells with a subsequent reduction of allergic inflammation symptoms (4, 7, 9).
- Clark, G.J. et al. (2009) Trends Immunol. 30:209.
- Kumagai, H. et al. (2003) Biochem. Biophys. Res. Commun. 307:719.
- Yotsumoto, K. et al. (2003) J. Exp. Med. 198:223.
- Munitz, A. et al. (2006) J. Allergy Clin. Immunol. 118:1082.
- Cantoni, C. et al. (1999) Eur. J. Immunol. 29:3148.
- Munitz, A. et al. (2006) Blood 107:1996.
- Bachelet, I. et al. (2005) J. Immunol. 175:7989.
- Bachelet, I. et al. (2008) J. Immunol. 180:6064.
- Bachelet, I. et al. (2006) J. Allergy Clin. Immunol. 117:1314.
- Alvarez, Y. et al. (2008) Mol. Immunol. 45:253.
Product Datasheets
Citations for Mouse CD300a/LMIR1 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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Leukocyte CD300a Contributes to the Resolution of Murine Allergic Inflammation
Authors: L Karra, R Singh Gang, R Shamri, PG Puzzovio, S Cohen-Mor, BD Levy, F Levi-Schaf
J. Immunol., 2018-10-12;0(0):.
Species: Mouse
Sample Types: Whole Cells
Applications: Engagement Assay, Flow Cytometry -
CD300f:IL-5 cross-talk inhibits adipose tissue eosinophil homing and subsequent IL-4 production
Authors: P Rozenberg, H Reichman, I Zab-Bar, M Itan, M Pasmanik-C, C Bouffi, U Qimron, I Bachelet, PC Fulkerson, ME Rothenberg, A Munitz
Sci Rep, 2017-07-19;7(1):5922.
Species: Mouse
Sample Types: Whole Cells
Applications: Flow Cytometry -
Mast cell costimulation by CD226/CD112 (DNAM-1/Nectin-2): a novel interface in the allergic process.
Authors: Bachelet I, Munitz A, Mankutad D, Levi-Schaffer F
J. Biol. Chem., 2006-07-10;281(37):27190-6.
Species: Mouse
Sample Types: Whole Cells
Applications: Flow Cytometry
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