Abcam, ab260039, Anti-SIRP alpha antibody [EPR22930-163]

Size: 100µL / 1mL
Anti-SIRP alpha antibody [EPR22930-163] (ab260039) is a rabbit monoclonal antibody detecting SIRP alpha in Western Blot, Flow Cytometry, IHC-P, ICC/IF . Suitable for Human . - KO validated for confirmed specificity - Biophysical QC for unrivalled batch-batch consistency
Key facts
Host species:Rabbit,
Clonality:Monoclonal,
Clone number:EPR22930-163,
Isotype:IgG,
Carrier free:No,
Reacts with:Human,
Applications:ICC/IF, WB, IHC-P, Flow CytSee reactivity dataSee the reactivity data table below for information on validated species and application combinations.,
Immunogen:The exact immunogen used to generate this antibody is proprietary information.

Product details:
What is this antibody validated in?
Anti-SIRP alpha antibody [EPR22930-163] (ab260039) is a rabbit recombinant monoclonal antibody and is validated for use in Western Blot (WB), Flow Cytometry (Flow Cyt), Immunohistochemistry (IHC-P), Immunocytochemistry/immunofluorescence (ICC/IF) in Human samples.
What is the molecular weight of SIRP alpha?
Anti-SIRP alpha [EPR22930-163] (ab260039) specifically detects a band for SIRP alpha (UniProt: P78324) at a molecular weight of 55kDa.
Trial sizes available!
Test your antibody or perform pre-screening before committing to a larger quantity. Sold in 10µl.
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Specificity confirmed
The specificity of Anti-SIRP alpha antibody [EPR22930-163] (ab260039) has been confirmed by Western blot testing in SIRPA Knockout A549 cells.
Other related products
We have a range of other formats of antibody clone [EPR22930-163] also available for your convenience: ab260039, Carrier free -
ab267401
, Alexa Fluor® 488 -
ab312902
, PE -
ab314295
Patented technology
Our RabMAb
technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to
RabMAb® patents
What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:
- High batch-to-batch consistency and reproducibility
- Improved sensitivity and specificity
- Long-term security of supply
- Animal-free batch production
For more information, read more on
recombinant antibodies

Properties and Storage Information:
Form-Liquid, Purification technique-Affinity purification Protein A, Storage buffer-pH: 7.2 - 7.4Preservative: 0.01% Sodium azideConstituents: PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA, Shipped at conditions-Blue Ice, Appropriate short-term storage duration-1-2 weeks, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions--20°C, Aliquoting information-Upon delivery aliquot, Storage information-Avoid freeze / thaw cycle

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
SIRP alpha also known as CD172a is a transmembrane receptor protein with a mass ranging between 70-110 kDa due to glycosylation. This protein extensively expresses on the surface of myeloid cells neurons and a subset of T-cells and is part of the immunoglobulin superfamily. SIRP alpha interacts with its ligand CD47 a widely expressed glycoprotein involved in immune response regulation. Its mechanical action primarily involves signal regulation through the recruitment of SHP-1 and SHP-2 two cytoplasmic tyrosine phosphatases.
Biological function summary
SIRP alpha functions significantly in the regulation of phagocytosis acting as a "don't eat me" signal to macrophages upon binding with CD47. It does not act alone; rather it is part of a complex that recruits SHP-1 and SHP-2 leading to inhibition of dephosphorylation activities essential for engulfment processes. This regulatory mechanism is important for maintaining cellular homeostasis ensuring that healthy cells are not mistakenly destroyed by the immune system.
Pathways
SIRP alpha plays an important role in the innate immune pathways involving the regulation of phagocytosis and cell-cell adhesion. Particularly it fits into the immune checkpoint pathways where it interacts closely with proteins like CD47 and plays a role in the interaction between the immune system and cancer cells. Through these pathways SIRP alpha helps maintain balance in the immune response allowing for the recognition of self versus non-self therefore preventing autoimmunity while facilitating the clearance of pathogens.
SIRP alpha is implicated in cancer and autoimmune diseases. In cancer its interaction with CD47 allows tumor cells to escape phagocytosis promoting tumor survival and growth. In autoimmune disorders dysregulated SIRP alpha expression or signaling could miscommunicate immune signals leading to the destruction of healthy tissue. Understanding the link between SIRP alpha and these conditions can reveal potential targets for therapeutic development especially using inhibitors or modulators targeting the SIRP alpha-CD47 interaction.