Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)

Knockout Tested Rabbit Recombinant Monoclonal CD46 antibody. Carrier free. Suitable for ICC/IF, WB, IHC-P and reacts with Human samples.

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Images

Western blot - Anti-CD46 antibody [EPR4014] - BSA and Azide free (AB271871), expandable thumbnail

Key facts

Isotype: IgG
Host species: Rabbit
Storage buffer: pH: 7.2 - 7.4
Constituents: PBS
Form: Liquid
Clonality: Monoclonal

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

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Product promiseTestedExpectedPredictedNot recommended

	ICC/IF	IP	Flow Cyt	WB	IHC-P
Human	Tested	Not recommended	Not recommended	Tested	Tested

Tested
Tested

Species	Dilution info	Notes
Species Human	Dilution info -	Notes -

Not recommended
Not recommended

Species	Dilution info	Notes
Species Human	Dilution info -	Notes -

Not recommended
Not recommended

Species	Dilution info	Notes
Species Human	Dilution info -	Notes -

Tested
Tested

Species	Dilution info	Notes
Species Human	Dilution info -	Notes -

Tested
Tested

Species	Dilution info	Notes
Species Human	Dilution info -	Notes -

Associated Products

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Target data

See full target information CD46

Function

Acts as a cofactor for complement factor I, a serine protease which protects autologous cells against complement-mediated injury by cleaving C3b and C4b deposited on host tissue. May be involved in the fusion of the spermatozoa with the oocyte during fertilization. Also acts as a costimulatory factor for T-cells which induces the differentiation of CD4+ into T-regulatory 1 cells. T-regulatory 1 cells suppress immune responses by secreting interleukin-10, and therefore are thought to prevent autoimmunity. (Microbial infection) A number of viral and bacterial pathogens seem to bind MCP in order to exploit its immune regulation property and directly induce an immunosuppressive phenotype in T-cells. (Microbial infection) Acts as a receptor for Adenovirus subgroup B2 and Ad3. (Microbial infection) Acts as a receptor for cultured Measles virus. (Microbial infection) Acts as a receptor for Herpesvirus 6/HHV-6. (Microbial infection) May act as a receptor for pathogenic bacteria Neisseria and Streptococcus pyogenes (PubMed:11260136, PubMed:11971006, PubMed:7708671, PubMed:9379894).

Alternative names

CD46, MCP, MIC10, Membrane cofactor protein, TLX, Trophoblast leukocyte common antigen

Recommended products

Knockout Tested Rabbit Recombinant Monoclonal CD46 antibody. Carrier free. Suitable for ICC/IF, WB, IHC-P and reacts with Human samples.

Key facts

Isotype: IgG
Host species: Rabbit
Storage buffer: pH: 7.2 - 7.4
Constituents: PBS
Form: Liquid
Clonality: Monoclonal
Immunogen: The exact immunogen used to generate this antibody is proprietary information.
Carrier free: Yes
Clone number: EPR4014
Purification technique: Affinity purification Protein A
Concentration

Storage

Shipped at conditions: Blue Ice
Appropriate short-term storage conditions: +4°C
Appropriate long-term storage conditions: +4°C
Storage information: Do Not Freeze

Notes

ab271871 is the carrier-free version of Anti-CD46 antibody [EPR4014] ab108307.

Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.

Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

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.

Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. The carrier-free buffer and high concentration allow for increased conjugation efficiency.

This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

This product is compatible with the Maxpar^® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar^® is a trademark of Fluidigm Canada Inc.

Supplementary info

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

Activity summary

CD46 also known as membrane cofactor protein (MCP) is a type I membrane protein with a molecular weight around 50-70 kDa due to glycosylation variability. This protein serves as a regulatory component in the complement system which protects host cells from damage by complement components. CD46 is widely expressed on almost all nucleated human cells. It plays a role in inactivating C3b and C4b components of the complement cascade preventing autologous complement-mediated damage. The gene coding for CD46 is located on chromosome 1q32 a region known for encoding several complement regulatory proteins.

Biological function summary

Beyond its complement regulatory role CD46 acts in immune response modulation and reproduction. It forms a part of a protein complex that involves members such as decay-accelerating factor and complement receptor 1. CD46 also engages in intracellular signaling that affects T cell function and differentiation. In the reproductive context it participates in sperm-oocyte fusion and has a role in trophoblast fusion during placental formation.

Pathways

CD46 integrates into various signaling pathways including the complement and T cell receptor signaling pathways. In the complement pathway CD46 interacts with C3b and factor I promoting cleavage and inactivation of C3b leading to pathway regulation. Involvement in the T cell receptor pathway hints that CD46 signaling protects against overactive immune responses by promoting a switch to a regulatory T cell phenotype which can modulate immunity and prevent autoimmunity.

Associated diseases and disorders

CD46 has connections with autoimmune conditions and infectious diseases. For instance alterations in CD46 expression or function can contribute to atypical hemolytic uremic syndrome where dysregulation of the complement pathway occurs. Additionally certain pathogens like Neisseria gonorrhoeae utilize CD46 as a receptor for infection. CD46’s interaction with proteins such as C3b connects it directly to complement-related conditions highlighting its importance in maintaining immune system balance.

Product promise

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In the unlikely event of one of our products not working as expected, you are covered by our product promise.

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11 product images

Western blot - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
This data was developed using Anti-CD46 antibody [EPR4014] ab108307, the same antibody clone in a different buffer formulation.
All lanes: Western blot - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871) at 1/1000 dilution
Lane 1: MOLT-4 (Human lymphoblastic leukemia cell line) cell lysate at 10 µg
Lane 2: Jurkat (Human T cell leukemia cell line from peripheral blood) cell lysate at 10 µg
Lane 3: HeLa (Human epithelial cell line from cervix adenocarcinoma) cell lysate at 10 µg
Lane 4: K562 (Human chronic myelogenous leukemia cell line from bone marrow) cell lysate at 10 µg
Secondary
All lanes: Goat anti-rabbit HRP conjugate at 1/2000 dilution
Predicted band size: 44 kDa
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307, at 1/500 dilution, staining CD46 in paraffin-embedded Human tonsil tissue
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Western blot - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
This data was developed using Anti-CD46 antibody [EPR4014] ab108307, the same antibody clone in a different buffer formulation.
Lane 1: Wild-type HAP1 cell lysate (20 μg)
Lane 2: CD46 knockout HAP1 cell lysate (20 μg)
Lane 3: HeLa cell lysate (20 μg)
Lane 4: K562 cell lysate (20 μg)
Lanes 1 - 4: Merged signal (red and green). Green - Anti-CD46 antibody [EPR4014] ab108307 observed at 50-70 kDa. Red - loading control, Anti-GAPDH antibody [6C5] - Loading Control ab8245, observed at 37 kDa.
Anti-CD46 antibody [EPR4014] ab108307 was shown to specifically react with when CD46 knockout samples were used. Wild-type and CD46 knockout samples were subjected to SDS-PAGE. Anti-CD46 antibody [EPR4014] ab108307 and Anti-GAPDH antibody [6C5] - Loading Control ab8245 (loading control to GAPDH) were diluted 1/1000 and 1/10 000 respectively and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye^® 800CW) preadsorbed (Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed ab216773) and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preadsorbed (Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed ab216776) secondary antibodies at 1/10 000 dilution for 1 h at room temperature before imaging.
All lanes: Western blot - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Predicted band size: 44 kDa
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307, at 1/500 dilution, staining CD46 in paraffin-embedded Human kidney tissue
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307 showing positive staining in Normal placenta tissue.
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307 showing positive staining in Normal uterus tissue.
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307 showing positive staining in Thyroid gland carcinoma tissue.
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307 showing positive staining in Colonic adenocarcinoma tissue.
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307 showing positive staining in Breast carcinoma tissue.
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Anti-CD46 antibody [EPR4014] ab108307 showing positive staining in Normal breast tissue.
Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (Anti-CD46 antibody [EPR4014] ab108307).
Western blot - Anti-CD46 antibody [EPR4014] - BSA and Azide free (ab271871)
Western blot: Anti-CD46 antibody [EPR4014] (Anti-CD46 antibody [EPR4014] ab108307) staining at 1/1000 dilution, shown in green; Mouse anti-GAPDH antibody [6C5] (Anti-GAPDH antibody [6C5] - Loading Control ab8245) loading control staining at 1/20000 dilution, shown in magenta. In Western blot, Anti-CD46 antibody [EPR4014] ab108307 was shown to bind specifically to CD46. A band was observed at 50-75 kDa in wild-type A549 cell lysates with no signal observed at this size in CD46 knockout cell line. To generate this image, wild-type and CD46 knockout A549 cell lysates were analysed. First, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 3 % milk in TBS-0.1 % Tween® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution.
All lanes: Western blot - Anti-CD46 antibody [EPR4014] (Anti-CD46 antibody [EPR4014] ab108307) at 1/1000 dilution
Lane 1: Wild-type A549 cell lysate at 20 µg
Lane 2: CD46 knockout A549 cell lysate at 20 µg
Lane 3: HAP1 cell lysate at 20 µg
Lane 4: THP-1 cell lysate at 20 µg
Secondary
All lanes: Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution
Performed under reducing conditions.