AB278018

Anti-C4B-d / C4B-b antibody [EPR23364-4] - BSA and Azide free (Detector)

RabMAb
Recombinant
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Rabbit Recombinant Monoclonal C4B-d / C4B-b antibody. Carrier free. Suitable for sELISA and reacts with Human samples.

View Alternative Names

CO4, CPAMD3, C4B_2, C4B, Complement C4-B, Basic complement C4, C3 and PZP-like alpha-2-macroglobulin domain-containing protein 3

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Sandwich ELISA - Anti-C4B-d / C4B-b antibody [EPR23364-4] - BSA and Azide free (Detector) (AB278018)

sELISA

Supplier Data

Sandwich ELISA - Anti-C4B-d / C4B-b antibody [EPR23364-4] - BSA and Azide free (Detector) (AB278018)

Representative standard curve from corresponding SimpleStep ELISA® Kit (ab277717).

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR23364-4

Isotype

IgG

Carrier free

Yes

Reacts with

Human

Applications

sELISA

applications

Immunogen

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

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "sELISA" : {"fullname" : "Sandwich ELISA", "shortname":"sELISA"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "sELISA-species-checked": "guaranteed", "sELISA-species-dilution-info": "", "sELISA-species-notes": "<p></p>" } } }

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Product details

ab278018 is a BSA and Azide Free antibody supplied in an unconjugated format and it is suitable for sandwich ELISAs to quantify Human C4b. The recommended pair for sandwich ELISA is:
Capture: ab278017 Human C4B-d / C4B-b Capture Antibody (unconjugated)
Detector: ab278018, Human C4B-d / C4B-b Detector Antibody (unconjugated)
The reference range value is 140.625 - 9000 pg/ml.

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

What are the advantages of a recombinant monoclonal antibody?
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.

Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. 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.

Sandwich ELISA
The recommended antibody orientation is based on internal optimization for ELISA-based assays. Antibody orientation is assay dependent and needs to be optimized for each assay type. Please note that the range provided for this antibody is only an estimation based on the performance of the product using the recommended antibody pair. Performance of the antibody pair will depend on the specific characteristics of your assay. We guarantee the product works in sandwich ELISA, but we do not guarantee the sensitivity or dynamic range of the antibody in your assay.

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Properties and storage information

Form

Liquid

Purification technique

Affinity purification Protein A

Storage buffer

Constituents: PBS

Shipped at conditions

Blue Ice

Appropriate short-term storage conditions

+4°C

Appropriate long-term storage conditions

+4°C

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Supplementary information

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

The 'C4b' protein also known as the 'C4b complement' plays a significant role in the immune system. This protein is a part of the larger complement system specifically as a segment derived from the cleavage of the native 'C4 complement'. It has an estimated molecular mass of about 200 kDa. The 'C4b' protein is prominently expressed on the surface of cells and in body fluids where the immune response is active. As an important player in the complement pathway it binds covalently to foreign particles labeling them for destruction or removal by immune cells.

Biological function summary

The 'C4b complement' interacts with various other components of the immune system. It is particularly involved in the formation of the C3 and C5 convertase complexes which are essential for the opsonization and activation cascade leading to pathogen elimination. Its attachment to cellular surfaces provides a docking point for proteins such as C2 facilitating the further cleavage and progression of the complement cascade. This interaction is critical for driving the classical and lectin pathways of complement activation.

Pathways

The 'C4b protein' is integral to the classical pathway of complement activation as well as to the lectin pathway. It associates with proteins like C1s C1q and factor B forming complexes that execute various stages of immune defenses. By forming C3 and C5 convertase 'C4b' not only promotes phagocytosis but also inflammation and cell lysis through membrane attack complexes. These processes underlie the body's ability to address microbial invasions efficiently.

'C4b complement dysregulation' can lead to autoimmune conditions such as systemic lupus erythematosus (SLE) and type 1 diabetes. In SLE reduced or malfunctional 'C4b' increases susceptibility to infections and triggers inappropriate immune responses. It can also correlate with the deficiency of related proteins like C2 which further impairs the complement system. These associations indicate that proper regulation of 'C4b' is essential for maintaining immune system stability and preventing overactive immune responses.

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Visit the General protocols
Visit the Troubleshooting

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Target data

Non-enzymatic component of the C3 and C5 convertases and thus essential for the propagation of the classical complement pathway. Covalently binds to immunoglobulins and immune complexes and enhances the solubilization of immune aggregates and the clearance of IC through CR1 on erythrocytes. C4A isotype is responsible for effective binding to form amide bonds with immune aggregates or protein antigens, while C4B isotype catalyzes the transacylation of the thioester carbonyl group to form ester bonds with carbohydrate antigens.. Derived from proteolytic degradation of complement C4, C4a anaphylatoxin is a mediator of local inflammatory process. It induces the contraction of smooth muscle, increases vascular permeability and causes histamine release from mast cells and basophilic leukocytes.

See full target information C4B

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Product promise

We are committed to supporting your work with high-quality reagents, and we're here for you every step of the way. In the unlikely event that one of our products does not perform as expected, you're protected by our Product Promise.

For full details, please see our Terms & Conditions

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

For licensing inquiries, please contact partnerships@abcam.com

Anti-C4B-d / C4B-b antibody [EPR23364-4] - BSA and Azide free (Detector)

Sandwich ELISA - Anti-C4B-d / C4B-b antibody [EPR23364-4] - BSA and Azide free (Detector) (AB278018)

Key facts

Host species

Clonality

Clone number

Isotype

Carrier free

Reacts with

Applications

Immunogen

Reactivity data

Product details

Properties and storage information

Form

Purification technique

Storage buffer

Shipped at conditions

Appropriate short-term storage conditions

Appropriate long-term storage conditions

Supplementary information

Biological function summary

Pathways

Product protocols

Target data

Complementary Products

Assay Kits

Primary Antibodies

Primary Antibodies

Primary Antibodies

Primary Antibodies

Product promise