Complement C3 Antibody (4D12)

Novus Biologicals, part of Bio-Techne | Catalog # NBP3-26471

Recombinant monoclonal antibody expressed in HEK293F cells
Novus Biologicals, part of Bio-Techne
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NBP3-26471-100ul
NBP3-26471-50ul
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Key Product Details

Species Reactivity

Human

Applications

ELISA, Flow Cytometry, Immunohistochemistry, Western Blot

Label

Unconjugated

Antibody Source

Recombinant Monoclonal Rabbit IgG Clone # 4D12

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

View all Complement C3 Antibodies »

Product Specifications

Immunogen

A synthesized peptide derived from Human Complement C3 [UniProt P01024]

Clonality

Monoclonal

Host

Rabbit

Isotype

IgG

Scientific Data Images for Complement C3 Antibody (4D12)

Complement C3 Antibody (4D12)

Immunohistochemistry: Complement C3 Antibody (4D12) [NBP3-26471] -

Immunohistochemistry: Complement C3 Antibody (4D12) [NBP3-26471] - Image of Complement C3 Antibody (4D12) diluted at 1:100 and staining in paraffin-embedded human liver tissue performed. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4C overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
Complement C3 Antibody (4D12)

Western Blot: Complement C3 Antibody (4D12) [NBP3-26471] -

Western Blot: Complement C3 Antibody (4D12) [NBP3-26471] - Positive Western Blot detected in: THP-1 whole cell lysate, K562 whole cell lysate.
All lanes: Complement C3 Antibody at 1: 1000
Secondary: Goat polyclonal to rabbit IgG at 1/50000 dilution.
Predicted band size: 188 kDa
Observed band size: 115 kDa
Complement C3 Antibody (4D12)

Flow Cytometry: Complement C3 Antibody (4D12) [NBP3-26471] -

Flow Cytometry: Complement C3 Antibody (4D12) [NBP3-26471] - Overlay histogram showing HepG2 cells stained with Complement C3 Antibody (4D12) (red line) at 1:50. The cells were fixed with 70% Ethylalcohol (18h) and then incubated in 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (1ug/1*10^6 cells) for 1 h at 4C. The secondary antibody used was FITC-conjugated goat anti-rabbit IgG (H+L) at 1/200 dilution for 30min at 4C. Control antibody (green line) was Rabbit IgG (1ug/1*10^6 cells) used under the same conditions. Acquisition of >10,000 events was performed.

Applications for Complement C3 Antibody (4D12)

Application
Recommended Usage

Flow Cytometry

1:20-1:200

Immunohistochemistry

1:50-1:200

Western Blot

1:500-1:5000

Formulation, Preparation, and Storage

Purification

Affinity purified

Formulation

PBS, pH 7.4, 150mM NaCl and 50% glycerol

Preservative

0.02% Sodium Azide

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at -20 to -70C. Avoid freeze-thaw cycles.

Background: Complement C3

The complement system, or complement cascade, is a part of the innate immune system that assists in defense against pathogens (1-3). Complement C3, also called C3 or C3 protein, is one of nine complement proteins and is the main component of the complement system which is composed of over 30 soluble and membrane-bound proteins (1,4). The complement cascade consists of three main pathways: the classical, the lectin, and the alternative, all of which converge into a common pathway involving C3 cleavage by C3-convertases (1-6). Human Complement C3 is synthesized as a protein of 1663 amino acids (aa) in length with a theoretical molecular weight of ~185 kDa (5). Complement C3 is the most prevalent human complement protein in the serum, with a concentration of 1.2 mg/mL, and is predominantly produced by hepatocytes in the liver, but is also synthesized by blood cells and epithelial cells (3,5). Furthermore, the structure of C3 is comprised of an alpha-chain (110 kDa) and a beta-chain (75 kDa) linked by a disulfide bond (5). Cleavage of inactive C3 by C3-convertases produces active C3a, which functions as a mediator of inflammation, and C3b, which is an opsonin (1-4). In addition to amplification of complement response, C3 fragments serve multiple additional functions including chemotaxis, phagocytosis, adhesion, and immune modulation (3). Complement C3 serves dual purposes where it is involved in pathogenesis and immunity but, conversely, cellular damage results from unregulated C3 activation (5).

Both elevated levels and reduced levels of Complement C3 has been implicated in diseases pathologies (6). Deficiency in Complement proteins can result in autoimmune disorders including systemic lupus erythematosus, which is more often associated with C1 or C4 deficiency and only rarely with C3 deficiency (6). However, C3 deficiency typically results in increased risk of recurrent bacterial infections and glomerulonephritis, characterized by inflammation of the filtering glomeruli in the kidneys (6). Additionally, elevated levels of C3a and C4a is seen in patients with antiphospholipid antibody syndrome (6). Serum levels of C3 are also higher in rheumatoid arthritis cases (6). The complement system has become a target for drugs and therapeutics aimed at modulating innate immunity (7). For instance, compstatin is a peptide that binds to C3, inhibiting convertase activity and cleavage and can be used to treat diseases associated with uncontrolled C3 activation (7). C3-inhibitors and other complement inhibitors are a promising drug candidate for treatment of many diseases (7).

References

1. Mathern, D. R., & Heeger, P. S. (2015). Molecules Great and Small: The Complement System. Clinical Journal of the American Society of Nephrology: CJASN. https://doi.org/10.2215/CJN.06230614

2. Merle, N. S., Church, S. E., Fremeaux-Bacchi, V., & Roumenina, L. T. (2015). Complement System Part I - Molecular Mechanisms of Activation and Regulation. Frontiers in Immunology. https://doi.org/10.3389/fimmu.2015.00262

3. Ricklin, D., Reis, E. S., Mastellos, D. C., Gros, P., & Lambris, J. D. (2016). Complement component C3 - The "Swiss Army Knife" of innate immunity and host defense. Immunological Reviews. https://doi.org/10.1111/imr.12500

4. Merle, N. S., Noe, R., Halbwachs-Mecarelli, L., Fremeaux-Bacchi, V., & Roumenina, L. T. (2015). Complement System Part II: Role in Immunity. Frontiers in Immunology. https://doi.org/10.3389/fimmu.2015.00257

5. Sahu, A., & Lambris, J. D. (2001). Structure and biology of complement protein C3, a connecting link between innate and acquired immunity. Immunological Reviews. https://doi.org/10.1034/j.1600-065x.2001.1800103.x

6. Vignesh, P., Rawat, A., Sharma, M., & Singh, S. (2017). Complement in autoimmune diseases. Clinica Chimica Acta; International Journal of Clinical Chemistry. https://doi.org/10.1016/j.cca.2016.12.017

7. Mastellos, D. C., Yancopoulou, D., Kokkinos, P., Huber-Lang, M., Hajishengallis, G., Biglarnia, A. R., Lupu, F., Nilsson, B., Risitano, A. M., Ricklin, D., & Lambris, J. D. (2015). Compstatin: a C3-targeted complement inhibitor reaching its prime for bedside intervention. European Journal of Clinical Investigation. https://doi.org/10.1111/eci.12419

Alternate Names

Acylation Stimulating Protein, acylation-stimulating protein cleavage product, AHUS5, ARMD9, ASP, C3, C3 and PZP-like alpha-2-macroglobulin domain-containing protein 1, C3a, C3a anaphylatoxin, C3adesArg, C3b, C3bc, C3-beta-c, complement C3, Complement C3 alpha chain, Complement C3 beta chain, Complement C3b alpha' chain, Complement C3c alpha' chain fragment 1, Complement C3c alpha' chain fragment 2, Complement C3d fragment, Complement C3dg fragment, Complement C3f fragment, Complement C3g fragment, complement component 3, complement component C3, complement component C3a, complement component C3b, CPAMD1, EC 3.4.21.43, epididymis secretory sperm binding protein Li 62p, HEL-S-62p, prepro-C3

Gene Symbol

C3

Additional Complement C3 Products

Product Documents for Complement C3 Antibody (4D12)

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Product Specific Notices for Complement C3 Antibody (4D12)

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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