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Rabbit Recombinant Monoclonal CFAB antibody. Carrier free. Suitable for WB and reacts with Human samples.

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Images

Western blot - Anti-Complement factor B antibody [EPR9288(B)] - BSA and Azide free (AB248646), expandable thumbnail
  • OI-RD Scanning - Anti-Complement factor B antibody [EPR9288(B)] - BSA and Azide free (AB248646), expandable thumbnail

Key facts

Isotype
IgG
Host species
Rabbit
Storage buffer

pH: 7.2 - 7.4
Constituents: PBS

Form
Liquid
Clonality
Monoclonal

Immunogen

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

Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
IPWBIHC-P
Human
Not recommended
Tested
Not recommended

Not recommended
Not recommended

Species
Human
Dilution info
-
Notes

-

Tested
Tested

Species
Human
Dilution info
-
Notes

-

Not recommended
Not recommended

Species
Human
Dilution info
-
Notes

-

Target data

Function

Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments: Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B-lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes.

Alternative names

BF, BFD, CFB, Complement factor B, C3/C5 convertase, Glycine-rich beta glycoprotein, PBF2, Properdin factor B, GBG

Recommended products

Rabbit Recombinant Monoclonal CFAB antibody. Carrier free. Suitable for WB and reacts with Human samples.

Key facts

Isotype
IgG
Form
Liquid
Clonality
Monoclonal
Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Carrier free
Yes
Clone number
EPR9288(B)
Purification technique
Affinity purification
Dissociation constant
1.43 x 10-10 M
Concentration
Loading...

Storage

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
Do Not Freeze

Notes

ab248646 is the carrier-free version of Anti-Complement factor B antibody [EPR9288(B)] ab133765.

Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.

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

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.

Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. The carrier-free buffer and high concentration allow for increased conjugation efficiency.

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.

This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.

Supplementary info

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

Complement factor B also known as CFB protein is a component of the complement system. It plays an important role in the alternative pathway. This protein with a molecular mass of approximately 93 kDa is produced mainly in the liver and expresses in various tissues throughout the body. Factor B comprises several domains including the von Willebrand factor type A domain essential for its activity. CFB engages in protein-protein interactions important for the function of the complement cascade.

Biological function summary

Complement factor B is essential in the immune system. It participates in the formation of the C3 convertase complex which is an important step in the amplification of the complement cascade. This protein contributes to the opsonization and clearance of pathogens assisting in the immune response. CFB binds with complement component C3b to participate in the alternative pathway which does not require antibody presence for activation.

Pathways

Complement factor B is part of the innate immune pathway. It helps mediate the alternative complement pathway acting as an amplifier of immune responses. This pathway interacts closely with the classical and lectin pathways ensuring a versatile defense mechanism. Factor D for example also plays a complementary role by cleaving factor B when bound to C3b to form C3 convertase a critical step in propagating the immune response.

Associated diseases and disorders

Complement factor B associates with kidney-related diseases like atypical hemolytic uremic syndrome (aHUS). Mutations in CFB can lead to deregulated complement activation contributing to pathological conditions like age-related macular degeneration (AMD). The relationship with protein C3 is important in these disorders as both factor B and C3 engage in interactions that when dysfunctional influence disease outcomes. Understanding these interactions can help develop targeted therapies such as anti-complement agents to modulate the complement system in these diseases.

Product promise

We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.

In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
Terms & Conditions.

2 product images

  • Western blot - Anti-Complement factor B antibody [EPR9288(B)] - BSA and Azide free (ab248646), expandable thumbnail

    Western blot - Anti-Complement factor B antibody [EPR9288(B)] - BSA and Azide free (ab248646)

    This data was developed using Anti-Complement factor B antibody [EPR9288(B)] ab133765, the same antibody clone in a different buffer formulation.

    All lanes: Western blot - Anti-Complement factor B antibody [EPR9288(B)] (Anti-Complement factor B antibody [EPR9288(B)] ab133765) at 1/1000 dilution

    Lane 1: Human serum at 10 µg

    Lane 2: Human plasma at 10 µg

    Secondary

    All lanes: Goat anti-rabbit HRP conjugated antibody at 1/2000 dilution

    Predicted band size: 86 kDa

    Observed band size: 60 kDa, 95 kDa

  • OI-RD Scanning - Anti-Complement factor B antibody [EPR9288(B)] - BSA and Azide free (ab248646), expandable thumbnail

    OI-RD Scanning - Anti-Complement factor B antibody [EPR9288(B)] - BSA and Azide free (ab248646)

    We have systematically measured KD (the equilibrium dissociation constant between the antibody and its antigen), of more than 840 recombinant antibodies to assess not only their individual KD values but also to see the average affinity of antibody.
    Based on the comparison with published literature values for mouse monoclonal antibodies, Recombinant antibodies appear to be on average 1-2 order of magnitude higher affinity.

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Product protocols

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

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