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Product Info Summary
| SKU: | PB9935 |
|---|---|
| Size: | 100 μg/vial |
| Reactive Species: | Human, Rat |
| Host: | Rabbit |
| Application: | Flow Cytometry, IHC, ICC, WB |
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Product info
Product Name
Anti-Factor I/CFI Antibody Picoband®
View all Complement Factor I Antibodies
SKU/Catalog Number
PB9935
Size
100 μg/vial
Form
Lyophilized
Description
Boster Bio Anti-Factor I/CFI Antibody Picoband® catalog # PB9935. Tested in Flow Cytometry, IHC, ICC, WB applications. This antibody reacts with Human, Rat. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.
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.
Cite This Product
Anti-Factor I/CFI Antibody Picoband® (Boster Biological Technology, Pleasanton CA, USA, Catalog # PB9935)
Host
Rabbit
Contents
Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg NaN3.
Clonality
Polyclonal
Isotype
Rabbit IgG
Immunogen
E. coli-derived human Factor I recombinant protein (Position: K19-D220). Human Factor I shares 70.7% and 71.2% amino acid (aa) sequence identity with mouse and rat Factor I, respectively.
*Blocking peptide can be purchased. Costs vary based on immunogen length. Contact us for pricing.
Cross-reactivity
No cross-reactivity with other proteins
Reactive Species
PB9935 is reactive to CFI in Human, Rat
Reconstitution
Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Observed Molecular Weight
75 kDa, 45 kDa
Calculated molecular weight
65750 MW
Background of Complement Factor I
Complement factor I, also known as C3b/C4b inactivator, is a protein that in humans is encoded by the CFI gene. This gene encodes a serine proteinase that is essential for regulating the complement cascade. The encoded preproprotein is cleaved to produce both heavy and light chains, which are linked by disulfide bonds to form a heterodimeric glycoprotein. This heterodimer can cleave and inactivate the complement components C4b and C3b, and it prevents the assembly of the C3 and C5 convertase enzymes. Defects in this gene cause complement factor I deficiency, an autosomal recessive disease associated with a susceptibility to pyogenic infections. Mutations in this gene have been associated with a predisposition to atypical hemolytic uremic syndrome, a disease characterized by acute renal failure, microangiopathic hemolytic anemia and thrombocytopenia. Primary glomerulonephritis with immune deposits and age-related macular degeneration are other conditions associated with mutations of this gene.
Antibody Validation
Boster validates all antibodies on WB, IHC, ICC, Immunofluorescence, and ELISA with known positive control and negative samples to ensure specificity and high affinity, including thorough antibody incubations.
Application & Images
Applications
PB9935 is guaranteed for Flow Cytometry, IHC, ICC, WB Boster Guarantee
Assay Dilutions Recommendation
The recommendations below provide a starting point for assay optimization. The actual working concentration varies and should be decided by the user.
Western blot, 0.1-0.5μg/ml, Human, Rat
Immunohistochemistry (Frozen Section), 0.5-1μg/ml, Human
Immunocytochemistry, 0.5-1μg/ml, Human
Flow Cytometry (Fixed), 1-3μg/1x106 cells, Human
Positive Control
WB: rat liver tissue, HELA whole cell
FCM: U-87 cell, HEPG2 cell
Validation Images & Assay Conditions
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Figure 1. Western blot analysis of Factor I using anti-Factor I antibody (PB9935).
Electrophoresis was performed on a 5-20% SDS-PAGE gel at 70V (Stacking gel) / 90V (Resolving gel) for 2-3 hours. The sample well of each lane was loaded with 50ug of sample under reducing conditions.
Lane 1: rat liver tissue lysates,
Lane 2: HELA whole cell lysates.
After Electrophoresis, proteins were transferred to a Nitrocellulose membrane at 150mA for 50-90 minutes. Blocked the membrane with 5% Non-fat Milk/ TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-Factor I antigen affinity purified polyclonal antibody (Catalog # PB9935) at 0.5 μg/mL overnight at 4°C, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:10000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. A specific band was detected for Factor I at approximately 75KD; 45KD. The expected band size for Factor I is at 66KD.
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Figure 2. Flow Cytometry analysis of U-87 cells using anti-Factor I antibody (PB9935).
Overlay histogram showing U-87 cells stained with PB9935 (Blue line). To facilitate intracellular staining, cells were fixed with 4% paraformaldehyde and permeabilized with permeabilization buffer. The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-Factor I Antibody (PB9935,1μg/1x106 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (BA1127, 5-10μg/1x106 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1μg/1x106) used under the same conditions. Unlabelled sample without incubation with primary antibody and secondary antibody (Red line) was used as a blank control.
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Figure 3. Flow Cytometry analysis of HEPG2 cells using anti-Factor I antibody (PB9935).
Overlay histogram showing HEPG2 cells stained with PB9935 (Blue line). To facilitate intracellular staining, cells were fixed with 4% paraformaldehyde and permeabilized with permeabilization buffer. The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-Factor I Antibody (PB9935,1μg/1x106 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (BA1127, 5-10μg/1x106 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1μg/1x106) used under the same conditions. Unlabelled sample without incubation with primary antibody and secondary antibody (Red line) was used as a blank control.
Protein Target Info & Infographic
Gene/Protein Information For CFI (Source: Uniprot.org, NCBI)
Gene Name
CFI
Full Name
Complement factor I
Weight
65750 MW
Superfamily
peptidase S1 family
Alternative Names
Complement factor I;3.4.21.45;C3B/C4B inactivator;Complement factor I heavy chain;Complement factor I light chain;CFI;IF; CFI AHUS3, ARMD13, C3BINA, C3b-INA, FI, IF, KAF complement factor I complement factor I|C3B/C4B inactivator|C3b-inactivator|Konglutinogen-activating factor|complement component I|complement control protein factor I|complement factor I heavy chain|light chain of factor I
*If product is indicated to react with multiple species, protein info is based on the gene entry specified above in "Species".For more info on CFI, check out the CFI Infographic
We have 30,000+ of these available, one for each gene! Check them out.
In this infographic, you will see the following information for CFI: database IDs, superfamily, protein function, synonyms, molecular weight, chromosomal locations, tissues of expression, subcellular locations, post-translational modifications, and related diseases, research areas & pathways. If you want to see more information included, or would like to contribute to it and be acknowledged, please contact [email protected].
Specific Publications For Anti-Factor I/CFI Antibody Picoband® (PB9935)
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Customer Q&As
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3 Customer Q&As for Anti-Factor I/CFI Antibody Picoband®
Question
We are currently using anti-Factor I/CFI antibody PB9935 for rat tissue, and we are content with the ICC results. The species of reactivity given in the datasheet says human, rat. Is it likely that the antibody can work on goat tissues as well?
Verified Customer
Verified customer
Asked: 2019-08-15
Answer
The anti-Factor I/CFI antibody (PB9935) has not been tested for cross reactivity specifically with goat tissues, though there is a good chance of cross reactivity. We have an innovator award program that if you test this antibody and show it works in goat you can get your next antibody for free. Please contact me if I can help you with anything.
Boster Scientific Support
Answered: 2019-08-15
Question
I was wanting to use your anti-Factor I/CFI antibody for ICC for rat visceral pleura on frozen tissues, but I want to know if it has been validated for this particular application. Has this antibody been validated and is this antibody a good choice for rat visceral pleura identification?
Verified Customer
Verified customer
Asked: 2018-03-22
Answer
It shows on the product datasheet, PB9935 anti-Factor I/CFI antibody has been tested for Flow Cytometry, IHC, ICC, WB on human, rat tissues. We have an innovator award program that if you test this antibody and show it works in rat visceral pleura in IHC-frozen, you can get your next antibody for free.
Boster Scientific Support
Answered: 2018-03-22
Question
I am looking for to test anti-Factor I/CFI antibody PB9935 on rat visceral pleura for research purposes, then I may be interested in using anti-Factor I/CFI antibody PB9935 for diagnostic purposes as well. Is the antibody suitable for diagnostic purposes?
B. Wu
Verified customer
Asked: 2018-03-14
Answer
The products we sell, including anti-Factor I/CFI antibody PB9935, are only intended for research use. They would not be suitable for use in diagnostic work. If you have the means to develop a product into diagnostic use, and are interested in collaborating with us and develop our product into an IVD product, please contact us for more discussions.
Boster Scientific Support
Answered: 2018-03-14
