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Typical Testing Data/Standard Curve (for reference only)

Human Complement Factor I (CFI) ELISA Kit | CFI elisa kit

Human Complement Factor I (CFI) Wide-range ELISA Kit

Gene Names
CFI; FI; IF; KAF; AHUS3; ARMD13; C3BINA; C3b-INA
Reactivity
Human
Applications
ELISA
Synonyms
Complement Factor I (CFI); Human Complement Factor I (CFI) Wide-range ELISA Kit; Complement Factor I; CF-I; C3b-INA; FI; IF; KAF; Factor I; Konglutinogen-Activating Factor; C3b-Inactivator; C3B/C4B inactivator; CFI elisa kit
Ordering
For Research Use Only!
Reactivity
Human
Specificity
This assay has high sensitivity and excellent specificity for detection of Wide-range Complement Factor I (CFI).
No significant cross-reactivity or interference between Wide-range Complement Factor I (CFI) and analogues was observed.
Sequence Length
583
Applicable Applications for CFI elisa kit
ELISA (EIA)
Assay Type
Double-antibody Sandwich
Samples
Serum, plasma and other biological fluids
Detection Range
0.29-18ng/mL
Sensitivity
The minimum detectable dose of this kit is typically less than 0.11ng/mL
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Wide-range Complement Factor I (CFI) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Wide-range Complement Factor I (CFI) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%
Test Principle
The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Wide-range Complement Factor I (CFI). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Wide-range Complement Factor I (CFI). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Wide-range Complement Factor I (CFI), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm +/- 10nm. The concentration of Wide-range Complement Factor I (CFI) in the samples is then determined by comparing the O.D. of the samples to the standard curve.
Preparation and Storage
The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Typical Testing Data/Standard Curve (for reference only)

Typical Testing Data/Standard Curve (for reference only)

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
NCBI Accession #
NCBI GenBank Nucleotide #
UniProt Accession #
NCBI Official Full Name
complement factor I isoform 2 preproprotein
NCBI Official Synonym Full Names
complement factor I
NCBI Official Symbol
CFI
NCBI Official Synonym Symbols
FI; IF; KAF; AHUS3; ARMD13; C3BINA; C3b-INA
NCBI Protein Information
complement factor I
UniProt Protein Name
Complement factor I
Protein Family
UniProt Gene Name
CFI
UniProt Synonym Gene Names
IF
UniProt Entry Name
CFAI_HUMAN

NCBI Description

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. [provided by RefSeq, Dec 2015]

Uniprot Description

CFI: Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively. Defects in CFI are a cause of susceptibility to hemolytic uremic syndrome atypical type 3 (AHUS3). An atypical form of hemolytic uremic syndrome. It is a complex genetic disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, renal failure and absence of episodes of enterocolitis and diarrhea. In contrast to typical hemolytic uremic syndrome, atypical forms have a poorer prognosis, with higher death rates and frequent progression to end-stage renal disease. Susceptibility to the development of atypical hemolytic uremic syndrome can be conferred by mutations in various components of or regulatory factors in the complement cascade system. Other genes may play a role in modifying the phenotype. Defects in CFI are the cause of complement factor I deficiency (CFI deficiency). CFI deficiency is an autosomal recessive condition associated with a propensity to pyogenic infections. Belongs to the peptidase S1 family.

Protein type: Protease; Secreted, signal peptide; EC 3.4.21.45; Secreted

Chromosomal Location of Human Ortholog: 4q25

Cellular Component: extracellular space; membrane; extracellular region; nucleus

Molecular Function: serine-type endopeptidase activity; metal ion binding; scavenger receptor activity

Biological Process: receptor-mediated endocytosis; regulation of complement activation; innate immune response; proteolysis; complement activation, classical pathway

Disease: Macular Degeneration, Age-related, 13; Complement Factor I Deficiency; Hemolytic Uremic Syndrome, Atypical, Susceptibility To, 3

Research Articles on CFI

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Product Notes

The Human CFI cfi (Catalog #AAA2709302) is an ELISA Kit and is intended for research purposes only. The product is available for immediate purchase. The AAA2709302 ELISA Kit recognizes Human CFI. AAA Biotech's Complement Factor I (CFI) can be used in a range of immunoassay formats including, but not limited to, ELISA (EIA). Researchers should empirically determine the suitability of the CFI cfi for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "Complement Factor I (CFI), ELISA Kit" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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