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CFB antibody (PB9934) performs well in IHC, WB and shows reactivity with Human.
- Validated for inter-lot consistency, specificity, and reproducibility
- Committed to quality since 1993
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IHC analysis of Factor B using anti-Factor B antibody (PB9934).
Factor B was detected in a paraffin-embedded section of human lung cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1 μg/ml rabbit anti-Factor B Antibody (PB9934) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # SA1022) with DAB as the chromogen.
Factor B was detected in a paraffin-embedded section of human lung cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1 μg/ml rabbit anti-Factor B Antibody (PB9934) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # SA1022) with DAB as the chromogen.
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Anti-Factor B/CFB Antibody Picoband®
CFB antibody
| Reactive Species | Host | Application |
|---|---|---|
| Human | Rabbit | IHC, WB |
Tested Applications
CFB antibody was positively detected by WB in:
A549 whole cell, 293T whole cell, HELA whole cell
Suggested blocking solution with 5% non-fat milk or BSA; (*)Recommended protein loading: 20-40 ug per lane
CFB antibody was positively detected by IHC in:
human lung cancer tissue
Use TE buffer pH 9.0 for antigen retrieval; (*) citrate buffer pH 6.0 is an alternative.
Recommend Dilution
Application
Dilution
Species
Immunohistochemistry (Paraffin-embedded Section)
0.5-1μg/ml
Human
Western blot
0.1-0.5μg/ml
Human
* It is recommended to optimize the amount of this reagent in each experimental system to achieve the best results.
Reactive Data
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IHC
IF
Human
Tested
Recommend
Monkey
Predicted
Predicted
Product Information
Product Name
Anti-Factor B/CFB Antibody Picoband®
View all CFB Antibodies
View all CFB Antibodies
Form
Lyophilized
Uniprot
Gene ID
Storage & Handling
Store at -20˚C for one year from date of receipt. After reconstitution, at 4˚C for one month. It can also be aliquotted and stored frozen at -20˚C for six months. Avoid repeated freeze-thaw cycles.
Host
Rabbit
Contents
Each vial contains antibody formulated with stabilizing components, 0.9 mg NaCl, 0.2 mg Na2HPO4, and 0.05 mg NaN3.
*This antibody is supplied in a stabilized formulation.
Compatibility with conjugation reactions depends on the chemistry of the conjugation method used.
For conjugation methods that are not compatible with the stabilizing components present in this formulation, a carrier-free antibody format is required.
*This antibody is supplied in a stabilized formulation.
Compatibility with conjugation reactions depends on the chemistry of the conjugation method used.
For conjugation methods that are not compatible with the stabilizing components present in this formulation, a carrier-free antibody format is required.
Clonality
Polyclonal
Isotype
Rabbit IgG
Immunogen
E. coli-derived human Factor B recombinant protein (Position: E518-L764). Human Factor B shares 84.2% amino acid (aa) sequence identity with mouse Factor B.
Cross-Reactivity
No cross-reactivity with other proteins
Reconstitution
Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Observed Molecular Weight
86 kDa
Calculated Molecular Weight
85.5 kDa
Background of CFB
Complement factor B is a protein that in humans is encoded by the CFB gene. This gene encodes complement factor B, a component of the alternative pathway of complement activation. Factor B circulates in the blood as a single chain polypeptide. Upon activation of the alternative pathway, it is cleaved by complement factor D yielding the noncatalytic chain Ba and the catalytic subunit Bb. The active subunit Bb is a serine protease which associates with C3b to form the alternative pathway C3 convertase. Bb is involved in the proliferation of preactivated B lymphocytes, while Ba inhibits their proliferation. This gene localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. This cluster includes several genes involved in regulation of the immune reaction. Polymorphisms in this gene are associated with a reduced risk of age-related macular degeneration. The polyadenylation site of this gene is 421 bp from the 5' end of the gene for complement component 2.
Cite This Product
Anti-Factor B/CFB Antibody Picoband® (Boster Biological Technology, Pleasanton CA, USA, Catalog # PB9934)
Antibody Homology Across Species
The results generated by this homology analysis tool for commonly used animal species are shown below. For unlisted species, please refer to the homology analysis between the immunogen sequence and the corresponding species.
A homology of ≥90% is recommended. Generally, higher homology indicates a greater potential for cross-species reactivity. However, protein expression levels may vary among different species, tissues, and cell types. Therefore, the homology analysis results are for reference only and do not guarantee antibody cross-reactivity or experimental performance.
Human
100%
High Homology
Monkey
96%
High Homology
Rabbit
87%
Moderate Homology
Mouse
84%
Moderate Homology
Sheep
81%
Moderate Homology
Dog
79%
Moderate Homology
Cow
79%
Moderate Homology
Rat
67%
Low homology
Zebrafish
43%
Low homology
Homology ≥ 90%High Homology
70% ≤ Homology < 90%Moderate Homology
Homology < 70%Low homology
Protocols
Western Blot protocol for CFB antibody
Immunohistochemistry (IHC) protocol for CFB antibody
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Product Promise
We promise Anti-Factor B/CFB Antibody Picoband® performs excellently in relevant applications for IHC, WB. If it doesn't perform as promised, we will refund the product. Learn more
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PB9934
Buy one primary antibody get one 0.5ml HRP or Biotin secondary antibody for free.
*Sample sizes are prepared on demand and will take extra lead time. (cannot be conjugated)
$370.00
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We promise all of our products perform as described in datasheets.
This product is for Research Use Only. Not for use in diagnostic procedures.
Update date:
Oct 9, 2026