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MABF982

Sigma-Aldrich

Anti-Complement C3b/iC3b Antibody, clone 6C9

clone 6C9, from mouse

Synonym(s):

Complement C3, C3 and PZP-like alpha-2-macroglobulin domain-containing protein 1, Complement C3 beta chain, C3-beta-c, C3bc, Complement C3 alpha chain, C3a anaphylatoxin, Acylation stimulating protein, ASP, C3adesArg, Complement C3b alpha′ chain, Complem

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

6C9, monoclonal

species reactivity

human, mouse

technique(s)

flow cytometry: suitable

isotype

IgG1κ

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

human ... C3(718)

General description

Complement C3 (UniProt P01024; also known as C3 and PZP-like alpha-2-macroglobulin domain-containing protein 1) is encoded by the C3 (also known as CPAMD1) gene (Gene ID 718) in human. C3 is initially translated with an N-terminal 22-amino acid signal peptide sequence, which is then removed to produce the 1641-amino acid mature C3. It plays a central role in the activation of the complement system. Its activation is required for the activation of both classical and alternative pathways of complement (CPC and APC, respectively). C3 is cleaved into C3a and C3b during CPC activation by the C3-convertase C4b2a composed of the activated C4 and C2. In APC, C3 is cleaved by the C3-convertase C3bBb composed C3b and the activated form of factor B (Bb). C3b serves as an opsonizing agent, and can be further cleaved by Factor I into C3c and C3d. iC3b is a proteolytically inactive C3b fragment that still opsonizes target microbes or cells, but cannot further amplify/activate the complement cascade through APC. iC3b can be further cleaved to C3dg, and finally to C3d. Unregulated activation of APC can result in paroxysmal nocturnal hemoglobinuria (PNH) that is characterized by chronic intravascular hemolysis. Clinical C5-neutralizing mAb treatment prevents the formation of cytolytic membrane attack complex (MAC) of complement, but does not block APC activation. Consequently, PNH patients are left with immune-mediated hemolytic anemia and their erythrocytes become opsonized with complement C3. Monoclonal antibodies (mAbs) against C3b/iC3b are useful for monitoring and studying C3b/iC3b deposit on PNH blood cells and mAbs with neutralizing activities are useful tools for studying C3-mediated CPC and APC.

Specificity

This clone binds C3b and iC3b

Immunogen

Epitope: iC3b
Human C3 corresponding to the iC3b of human Complement C3b/iC3b.

Application

Research Category
Inflammation & Immunology
Research Sub Category
Immunoglobulins & Immunology
This mouse monoclonal Anti-Complement C3b/iC3b Antibody, clone 6C9, Cat. No. MABF982 is validated for use in Flow Cytometry, for the detection of C3b.

Quality

Flow Cytometry Analysis: This antibody (200 ug mAb/5 x 10E6 cells/mL) detected C3b/iC3b deposit on human Burkett′s lymphoma Raji B cells opsonized with anti-CD20 mAb Rituximab (RTX) in the presence of 50% normal human serum (NHS).

Target description

187 kDa calculated

Physical form

Format: Purified
Protein G Purified
Purified mouse monoclonal IgG1κ antibody in buffer containing PBS without preservatives.

Storage and Stability

Stable for 1 year at -20°C from date of receipt.
Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.

Other Notes

Concentration: Please refer to lot specific datasheet.

Disclaimer

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.

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Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Luke D Halder et al.
Nature communications, 11(1), 2331-2331 (2020-05-13)
Extracellular vesicles have an important function in cellular communication. Here, we show that human and mouse monocytes release TGF-β1-transporting vesicles in response to the pathogenic fungus Candida albicans. Soluble β-glucan from C. albicans binds to complement receptor 3 (CR3, also
Pizga Kumwenda et al.
Cell reports, 38(1), 110183-110183 (2022-01-06)
Candida albicans is a commensal of the urogenital tract and the predominant cause of vulvovaginal candidiasis (VVC). Factors that increase circulatory estrogen levels such as pregnancy, the use of oral contraceptives, and hormone replacement therapy predispose women to VVC, but

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