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AB28112

FITC Anti-CD55 antibody [MEM-118]

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Mouse Monoclonal DAF antibody - conjugated to FITC. Suitable for Flow Cyt and reacts with Human samples. Immunogen corresponding to Cell preparation containing CD55 protein.

View Alternative Names

CD55, CR, DAF, Complement decay-accelerating factor

1 Images
Flow Cytometry - FITC Anti-CD55 antibody [MEM-118] (AB28112)
  • Flow Cyt

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Flow Cytometry - FITC Anti-CD55 antibody [MEM-118] (AB28112)

Overlay histogram showing THP1 cells stained with ab28112 (red line). The cells were fixed with 80% methanol (5 min) and incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab28112, 10μl/1x106 cells) for 30 min at 22°C. Isotype control antibody (black line) was mouse IgM (FITC) (ab91546, 10μl/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed. This antibody gave a positive signal in THP1 cells fixed with 4% paraformaldehyde (10 min) used under the same conditions.
Please note that Abcam do not have any data for use of this antibody on non-fixed cells. We welcome any customer feedback.

Key facts

Host species

Mouse

Clonality

Monoclonal

Clone number

MEM-118

Isotype

IgM

Conjugation

FITC

Excitation/Emission

Ex: 495nm, Em: 519nm

Carrier free

No

Reacts with

Human

Applications

Flow Cyt

applications

Immunogen

Cell preparation containing CD55 protein. The exact immunogen used to generate this antibody is proprietary information.

P08174

Specificity

ab28112 recognizes an epitope in SCR4 domain of CD55 antigen (Decay accelerating factor).

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "FlowCyt" : {"fullname" : "Flow Cytometry", "shortname":"Flow Cyt"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "FlowCyt-species-checked": "testedAndGuaranteed", "FlowCyt-species-dilution-info": "10 µL for 10^6 Cells", "FlowCyt-species-notes": "<p><a href='/en-us/products/unavailable/fitc-mouse-igm-b117-isotype-control-ab91546'>ab91546</a> - Mouse monoclonal IgM, is suitable for use as an isotype control with this antibody.</p>" }, "Primates": { "FlowCyt-species-checked": "predicted", "FlowCyt-species-dilution-info": "", "FlowCyt-species-notes": "" } } }

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We recommend this product because it’s often used in the same experiment or related research.

We advise that you always check the datasheet to ensure it fits your experiments, or contact ourtechnical teamfor help.

Product details

The purified antibody is conjugated with Fluorescein isothiocyanate (FITC) under optimum conditions. The reagent is free of unconjugated FITC and adjusted for direct use.

Properties and storage information

Form
Liquid
Purity
IgM fraction
Storage buffer
pH: 8 Preservative: 0.097% Sodium azide Constituents: Tris buffered saline, 0.2% BSA
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

CD55 also known as Decay-Accelerating Factor (DAF) is a glycoprotein that regulates the complement cascade. This protein typically weighs around 70 kDa. It is expressed in many cells including epithelial and endothelial cells and is often present on the surface of blood cells. CD55 plays an important role in protecting cells against lysis by inhibiting the formation and stability of C3 and C5 convertases which ultimately prevent cell destruction by the complement system.
Biological function summary

CD55 helps maintain immune homeostasis by preventing the complement-mediated damage to host tissues. It functions as a member of the regulators of complement activation (RCA) family. While not necessarily part of a larger protein complex its function is related to other regulatory proteins such as CD46 and CD59 which cooperate to regulate complement activity. The DAF protein's immunology function is instrumental in ensuring that self-cells are not inadvertently attacked by the body's immune system.

Pathways

CD55 significantly impacts the complement pathway which is a central component of the innate immune system. It directly interacts with complement components C3 and C5 accelerating their decay and disassembly. Through this pathway CD55 has a working relationship with other complement regulatory proteins like Factor H which also aids in controlling complement activation on the cell surface.

A dysfunctional CD55 can relate to conditions such as paroxysmal nocturnal hemoglobinuria (PNH) and atypical hemolytic uremic syndrome (aHUS). In PNH the absence or insufficiency of CD55 (and CD59) on red blood cells leads to complement-mediated lysis causing hemolytic anemia. In aHUS impaired regulation of the complement system including abnormalities in CD55 function exacerbates symptoms. CD55's role is therefore important in preventing these complement-related disorders and preserving cellular integrity in the human body.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

This protein recognizes C4b and C3b fragments that condense with cell-surface hydroxyl or amino groups when nascent C4b and C3b are locally generated during C4 and c3 activation. Interaction of daf with cell-associated C4b and C3b polypeptides interferes with their ability to catalyze the conversion of C2 and factor B to enzymatically active C2a and Bb and thereby prevents the formation of C4b2a and C3bBb, the amplification convertases of the complement cascade (PubMed : 7525274). Inhibits complement activation by destabilizing and preventing the formation of C3 and C5 convertases, which prevents complement damage (PubMed : 28657829).. (Microbial infection) Acts as a receptor for Coxsackievirus A21, coxsackieviruses B1, B3 and B5.. (Microbial infection) Acts as a receptor for Human enterovirus 70 and D68 (Probable).. (Microbial infection) Acts as a receptor for Human echoviruses 6, 7, 11, 12, 20 and 21.
See full target information CD55

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