Complement C3 Antibody (5F9) - Azide and BSA Free

Novus Biologicals | Catalog # H00000718-M01

Novus Biologicals
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Key Product Details

Species Reactivity

Human

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot, ELISA

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2a Kappa Clone # 5F9

Format

Azide and BSA Free
View all Complement C3 Primary Antibodies »

Product Specifications

Immunogen

C3 (NP_000055, 1534 a.a. ~ 1644 a.a) partial recombinant protein with GST tag. MW of the GST tag alone is 26 KDa. DKACEPGVDYVYKTRLVKVQLSNDFDEYIMAIEQTIKSGSDEVQVGQQRTFISPIKCREALKLEEKKHYLMWGLSSDFWGEKPNLSYIIGKDTWVEHWPEEDECQDEENQK

Specificity

C3 - complement component 3

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2a Kappa

Theoretical MW

187 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

Quality control test: Antibody Reactive Against Recombinant Protein.

Scientific Data Images for Complement C3 Antibody (5F9) - Azide and BSA Free

Western Blot: Complement C3 Antibody (5F9) [H00000718-M01]

Western Blot: Complement C3 Antibody (5F9) [H00000718-M01]

Western Blot: Complement C3 Antibody (5F9) [H00000718-M01] - C3 monoclonal antibody (M01), clone 5F9 Analysis of C3 expression in A-431.
Immunohistochemistry-Paraffin: Complement C3 Antibody (5F9) [H00000718-M01]

Immunohistochemistry-Paraffin: Complement C3 Antibody (5F9) [H00000718-M01]

Immunohistochemistry-Paraffin: Complement C3 Antibody (5F9) [H00000718-M01] - Analysis of monoclonal antibody to C3 on formalin-fixed paraffin-embedded human salivary gland. Antibody concentration at 3 ug/mL.
ELISA: Complement C3 Antibody (5F9) [H00000718-M01]

ELISA: Complement C3 Antibody (5F9) [H00000718-M01]

ELISA: Complement C3 Antibody (5F9) [H00000718-M01] - Detection limit for recombinant GST tagged C3 is approximately 1 ng/mL as a capture antibody.

Applications for Complement C3 Antibody (5F9) - Azide and BSA Free

Application
Recommended Usage

Immunohistochemistry

1:10 - 1:500

Immunohistochemistry-Paraffin

1:10 - 1:500

Western Blot

1:500
Application Notes
Antibody reactivity against cell lysate and recombinant protein for WB. It has also been used for IHC-P and ELISA.

Formulation, Preparation, and Storage

Purification

IgG purified

Formulation

PBS, pH 7.4

Format

Azide and BSA Free

Preservative

No Preservative

Concentration

Concentrations vary lot to lot. See 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

Aliquot and store at -20C or -80C. 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

Entrez Gene IDs

718 (Human)

Gene Symbol

C3

OMIM

120700 (Human)

UniProt

NP_000055

Additional Complement C3 Products

Product Documents for Complement C3 Antibody (5F9) - Azide and BSA Free

Certificate of Analysis

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Product Specific Notices for Complement C3 Antibody (5F9) - Azide and BSA Free

This product is produced by and distributed for Abnova, a company based in Taiwan.

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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Protocols

Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.

FAQs for Complement C3 Antibody (5F9) - Azide and BSA Free

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  • Q: I am trying to establish a method to measure mice C3 levels by nephelometry. I would be most grateful if you could provide me with some help, regarding the choice of the Ab. I totally understand that since such a method has never been tried, I do not expect any guaranties. 

    A: We have never performed nephelometry in our lab, and do not have a protocol or advice to provide about this application. However, it seems to me that you should choose an antibody that is capable of recognizing its target in its folded conformation. Therefore, I would suggest trying an antibody that has been validated for ICC or IHC.

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