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HPA003563 Sigma-Aldrich

Anti-C3 antibody produced in rabbit

Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution

Synonym: Anti-ARMD9, Anti-C3a, Anti-C3b, Anti-CPAMD1



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Immune Cell Signaling and Blood, Antibodies to Complement,
product line   Prestige Antibodies® Powered by Atlas Antibodies
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   immunohistochemistry: 1:200- 1:500
species reactivity   human
form   buffered aqueous glycerol solution
shipped in   wet ice
storage temp.   −20°C
packaging   antibody small pack of 25 μL
antibody form   affinity isolated antibody
Quality Level   100
antibody product type   primary antibodies
UniProt accession no.   P01024
Gene Information   human ... C3(718)


General description

C3 (complement component 3) is the key component of the complement system. It is acted upon by C3 convertases, which produces the activated C3b. It is the predominant protein of the complement system, and is a member of the a2-macroglobulin protein family. It contains a reactive thioester bond, and α- and β-chains of 115 and 75kDa respectively. These together form 13 domains. These domains are divided into single linker (LNK), anaphylatoxin (ANA/C3a), C1r/C1s-UEGF-BMP1 (CUB), C345c, and thioester-containing domains (TED), and namely eight macroglobulin domains (MG1-MG8). The C3 gene is mapped to human chromosome 19p13.3.


Complement C3 precursor recombinant protein epitope signature tag (PrEST)


Anti-C3 antibody produced in rabbit has been used in antibody bead arrays to target C3 protein.

Physical form

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Legal Information

Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC

Biochem/physiol Actions

C3 (complement component 3) is the key component of the complement system. It is acted upon by C3 convertases, which produces anaphylatoxin C3a and the opsonin C3b. C3a is known to possess antifungal and antimicrobial activity and functions as a chemoattractant. It promotes inflammatory responses such as granule release, formation of oxygen radicals, initiates histamine release, smooth muscle contraction and induces vascular permeability. C3b stimulates opsonophagocytosis and is associated with the production of excess C3 convertases for C5 convertase generation. C3 might reduce the pathogenesis of rhodopsin mutations that leads to retinitis pigmentosa.

Complement component 3 is referred to as C3, ASP, C3a, C3b, AHUS5, ARMD9, CPAMD1 and HEL-S-62p. It is a key fluid-phase protein of the immune system. Complement activation of this gene results in the formation of multiple C3b plasma protein complexes in serum. It helps in recognizing and tags damaged plasma proteins for subsequent removal from the blood without triggering pro-inflammatory functions. The C3 serum levels are associated with ABI and angiographic parameters of atherosclerosis.

Features and Benefits

Prestige Antibodies® are highly characterized and extensively validated antibodies with the added benefit of all available characterization data for each target being accessible via the Human Protein Atlas portal linked just below the product name at the top of this page. The uniqueness and low cross-reactivity of the Prestige Antibodies® to other proteins are due to a thorough selection of antigen regions, affinity purification, and stringent selection. Prestige antigen controls are available for every corresponding Prestige Antibody and can be found in the linkage section.

Every Prestige Antibody is tested in the following ways:
• IHC tissue array of 44 normal human tissues and 20 of the most common cancer type tissues.
• Protein array of 364 human recombinant protein fragments.


Corresponding Antigen APREST78221.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Prestige Antibody® Immunofluorescence Procedure

Prestige Antibodies® have been used for subcellular localization studies by immunocytochemistry (ICC) - immunofluorescence (IF) using the protocol described below. In addition to the primary antibodi...
Keywords: Immunocytochemistry, Immunofluorescence, Immunostaining, Sample preparations

Prestige Antibody® Immunohistochemistry Procedure

Prestige Antibodies® developed for immunohistochemistry based expression profiling are recommended to be used according to the standard IHC staining protocol described below.
Keywords: Buffers, Dehydration reaction, Gene expression, Hydration reaction, Immunohistochemistry, Immunostaining, Tissue microarrays

Prestige Antibody® Protein Immunoblotting Procedure

Prestige Antibodies® recommended for Western Blot are recommended to be used according to the standard WB protocol described below. Western blot standard protocol optimized for
Keywords: Catalytic combustion detector, Electrophoresis, Gene expression, Sample preparations, Western blot

Prestige Antigens™-Blocking Protocol

Prestige Antigens and the corresponding Prestige Antibodies are recommended to be used according to the standard blocking protocol described below.
Keywords: Immunocytochemistry, Immunohistochemistry, Immunostaining, Titrations, Western blot

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