SKU: 70779348242

Mouse Anti-Human CD172a (SIRPα) Antibody (S-4039)

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Description

Mouse Anti-Human CD172a (SIRPα) Antibody (S-4039)Product Specification Host Mouse Antigen CD172a (SIRP) Synonyms Tyrosine protein phosphatase non receptor type substrate 1; SHP substrate 1; SHPS 1; Brain Ig like molecule with tyrosine based activation motifs (Bit); CD172 antigen like family member A; Inhibitory receptor SHPS 1; Macrophage fusion receptor; MyD 1 antigen; BIT; MFR; MYD1; PTPNS1; SHPS1; SIRP; SIRPA Location Membrane Accession P78324 Clone Number S 4039 Antibody Type Mouse mAb Isotype

Product Specification


Host Mouse
Antigen CD172a (SIRPα)
Synonyms Tyrosine-protein phosphatase non-receptor type substrate 1; SHP substrate 1; SHPS-1; Brain Ig-like molecule with tyrosine-based activation motifs (Bit); CD172 antigen-like family member A; Inhibitory receptor SHPS-1; Macrophage fusion receptor; MyD-1 antigen; BIT; MFR; MYD1; PTPNS1; SHPS1; SIRP; SIRPA
Location Membrane
Accession P78324
Clone Number S-4039
Antibody Type Mouse mAb
Isotype IgG2a,k
Application FCM
Reactivity Hu
Positive Sample human peripheral blood leukocytes
Purification Protein A
Concentration 2 mg/ml
Conjugation Unconjugated
Physical Appearance Liquid
Storage Buffer

PBS pH7.4

Stability & Storage

12 months from date of receipt / reconstitution, 2 to 8 °C as supplied

Dilution


application dilution species
FCM 1:200 Hu

Background

Signal-regulatory protein alpha (SIRPα, also known as CD172a or SHPS-1) is a type I transmembrane glycoprotein of the immunoglobulin superfamily, prominently expressed on myeloid cells, neurons, and stem cells, that functions as an inhibitory receptor by binding to the broadly expressed ligand CD47 (the “don’t eat me” signal) to negatively regulate innate immune effector functions such as macrophage phagocytosis of healthy host cells; upon CD47 engagement, phosphorylation of its cytoplasmic immunoreceptor tyrosine-based inhibitory motifs (ITIMs) recruits phosphatases like SHP-1 and SHP-2, thereby blocking actin cytoskeleton remodeling required for phagocytic activity, while structural studies have revealed its extracellular region contains three Ig-like domains (one V-set and two C1-set) and the interaction surface resembles antigen-receptor binding; in cancer, tumor cells exploit this CD47-SIRPα axis as an innate immune checkpoint to evade phagocytosis, making SIRPα a promising therapeutic target, especially in combination with anti-PD-1/PD-L1 therapies .

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SKU: 70779348242

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Stephanie I.
Lexington, US
★★★★★ 5
Great toddler shoe
Size: 11.5 Big Kid, Color: Black/White
Great shoes for toddlers. The extra Velcro across the tongue makes sure the shoes start secured
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Reviewed in the United States on December 1, 2025
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Mark
Bozeman, US
★★★★★ 5
Buy These!
Size: 2 Big Kid, Color: Purple/Turq
Absolutely perfect. Great fit and style. My 3rd grade runs on a very competitive cross country team and these have help up all season and for general everyday wear.
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Reviewed in the United States on October 14, 2025
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Megan Krachanko
Belleville, US
★★★★★ 5
Fsvorites!
Size: 11 Wide Big Kid, Color: Orange
These are my 4yo grandson's davorutez!
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Reviewed in the United States on December 17, 2025
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Ashley Harmon
San Leandro, US
★★★★★ 5
Nice, cute shoes for my 4 year old daughter
Size: 9 Toddler, Color: Gold/Rainbow
These shoes are so cute and great quality. My daughter wanted a pair of saucony shoes like mine. So I’m glad I was able to find her a pair.
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Reviewed in the United States on April 21, 2026
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Lindsey
Grantham, US
★★★★★ 5
Well made sneaker
Size: 10 Wide Toddler, Color: Pink/Purple
I'm really impressed and my toddler loves their new sneakers. Will be ordering again
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Reviewed in the United States on April 22, 2026

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