Product nameAnti-SIRP alpha antibody
See all SIRP alpha primary antibodies
DescriptionRabbit polyclonal to SIRP alpha
SpecificityDetects endogenous levels of total Sirp alpha1 protein.
Tested applicationsSuitable for: WB, ELISA, IHC-P, ICC/IFmore details
Species reactivityReacts with: Mouse, Rat, Human
- WB:HepG2 cell extracts; IHC-P: Human brain tissue. ICC/IF MCF7 cells.
Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: 50% Glycerol, 0.87% Sodium chloride, PBS
Without Mg+2 and Ca+2
Concentration information loading...
PurityImmunogen affinity purified
Our Abpromise guarantee covers the use of ab53721 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Detects a band of approximately 56 kDa (predicted molecular weight: 56 kDa).|
|IHC-P||1/50 - 1/100.|
|ICC/IF||Use a concentration of 5 µg/ml.|
FunctionImmunoglobulin-like cell surface receptor for CD47. Acts as docking protein and induces translocation of PTPN6, PTPN11 and other binding partners from the cytosol to the plasma membrane. Supports adhesion of cerebellar neurons, neurite outgrowth and glial cell attachment. May play a key role in intracellular signaling during synaptogenesis and in synaptic function (By similarity). Involved in the negative regulation of receptor tyrosine kinase-coupled cellular responses induced by cell adhesion, growth factors or insulin. Mediates negative regulation of phagocytosis, mast cell activation and dendritic cell activation. CD47 binding prevents maturation of immature dendritic cells and inhibits cytokine production by mature dendritic cells.
Tissue specificityUbiquitous. Highly expressed in brain. Detected on myeloid cells, but not T-cells. Detected at lower levels in heart, placenta, lung, testis, ovary, colon, liver, small intestine, prostate, spleen, kidney, skeletal muscle and pancreas.
Sequence similaritiesContains 2 Ig-like C1-type (immunoglobulin-like) domains.
Contains 1 Ig-like V-type (immunoglobulin-like) domain.
Phosphorylated on tyrosine residues in response to stimulation with EGF, growth hormone, insulin and PDGF. Dephosphorylated by PTPN11.
- Information by UniProt
- Signal regulatory protein alpha type 1 antibody
- Bit antibody
- Brain Ig like molecule with tyrosine based activation motifs antibody
All lanes : Anti-SIRP alpha antibody (ab53721) at 1/500 dilution
Lane 1 : Extracts from HepG2 cells
Lane 2 : Extracts from HepG2 cells with immunizing peptide
Predicted band size: 56 kDa
Observed band size: 56 kDa
Ab53721 at 1/50 dilution, staining paraffin embedded human brain, in the presence (right) and absence (left) of blocking peptide.
ICC/IF image of ab53721 stained Mcf7 cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab53721, 5µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
ab53721 has been referenced in 5 publications.
- Murata Y et al. Anti-human SIRPa antibody is a new tool for cancer immunotherapy. Cancer Sci 109:1300-1308 (2018). PubMed: 29473266
- Ativie F et al. Cannabinoid 1 Receptor Signaling on Hippocampal GABAergic Neurons Influences Microglial Activity. Front Mol Neurosci 11:295 (2018). PubMed: 30210289
- Yanagita T et al. Anti-SIRPa antibodies as a potential new tool for cancer immunotherapy. JCI Insight 2:e89140 (2017). PubMed: 28097229
- Ogembo JG et al. SIRPa/CD172a and FHOD1 are unique markers of littoral cells, a recently evolved major cell population of red pulp of human spleen. J Immunol 188:4496-505 (2012). PubMed: 22490440
- Mittal R et al. Escherichia coli K1 promotes the ligation of CD47 with thrombospondin-1 to prevent the maturation of dendritic cells in the pathogenesis of neonatal meningitis. J Immunol 185:2998-3006 (2010). Blocking ; Human . PubMed: 20675593