Description
Key facts
Detection method:Colorimetric,
Sample types:Saliva, Urine, Tissue Extracts, Heparin Plasma, Citrate plasma, Cell culture supernatant, Serum, EDTA Plasma,
Reacts with:Human,
Assay type:Sandwich (quantitative),
Sensitivity:= 5.4 pg/mL,
Range:250 - 16000 pg/mL,
Assay time:1h 30m,
Assay Platform:Pre-coated microplate (12 x 8 well strips)
Product details:
Human Apolipoprotein A-IV ELISA Kit ab214567 is a rapid single-wash 90-min Sandwich ELISA to measure Human Apolipoprotein A-IV in cell culture supernatant, citrate plasma, EDTA plasma, heparin plasma, saliva, serum, tissue extracts, urine. This SimpleStep sensitivity is 5.4 pg/mL.
How the assay works
Human Apolipoprotein A-IV SimpleStep ELISA
employs capture antibodies conjugated to an affinity tag that is recognized by the monoclonal antibody used to coat our SimpleStep ELISA
plates. This approach to sandwich ELISA allows the formation of the antibody-analyte sandwich complex in a single step, significantly reducing assay time. See the SimpleStep ELISA
protocol summary in the image section for further details.
Assay Specificity
Our SimpleStep ELISA
kits use recombinant monoclonal antibodies rigorously validated to ensure the highest level of consistency and reproducibility, improved sensitivity and specificity and ease of scalability and security of supply.
Please refer to our protocol booklet for more details.
Human Apolipoprotein A-IV ELISA Kit ab214567 protocol summary
1. Mix: add samples/standards to the wells together with the capture and detector antibody cocktail. Incubate 1 hr at room temperature
2. Wash
3. Add TMB development solution - incubate for 10 min
4. Add Stop solution
5. Read the results on a plate reader at 450 nm
Design your own immunoassay
We offer the antibody pair used in this kit in a BSA and Azide-free format, ready for conjugation:
- Anti-APOA4/Apo-AIV antibody [EPR19465-232] - BSA and Azide free (Capture)
ab242896
- Anti-APOA4/Apo-AIV antibody [EPR19465-41] - BSA and Azide free (Detector)
ab242896
Human Apolipoprotein A-IV is a 45kDa glycoprotein with activities involving lipid transport. Specifically, Apolipoprotein A-IV is a component of high density lipoprotein (HDL) and chylomicrons. Its primarily synthesized is the intestine in association with lymph chylomicron particles. Although its precise function is not known, Apolipoprotein A-IV is a potent activator of lecithin-cholesterol acyltransferase (LCAT)
in vitro
. Human Apolipoprotein A-IV consists of a 20 amino acid (aa) signal peptide and 376 aa mature chain. Human Apolipoprotein A-IV is 62% identical to both mouse and rat Apolipoprotein A-IV.
REACH authorisation
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.
Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions-+4°C, Storage information-+4°C
Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
APOA4 also known as Apo-AIV or apolipoprotein A4 is a protein mainly expressed in the small intestine and liver. It has a molecular mass of approximately 46 kDa. This protein plays a significant role in lipid metabolism by facilitating the transport of lipids in the bloodstream. APOA4 exists in the plasma and associates predominately with high-density lipoproteins (HDL) and to a lesser extent with chylomicrons.
Biological function summary
Apolipoprotein A4 acts as an important player in the regulation of lipid homeostasis and satiety. This protein is not part of a complex but enhances the efficiency of lipid absorption and transport. APOA4 reacts with enzymes like lecithin-cholesterol acyltransferase which is essential in the maturation of HDL particles. This interaction supports cholesterol efflux and assists in maintaining cholesterol balance within the body.
Pathways
APOA4 is heavily involved in the reverse cholesterol transport pathway which is important for removing excess cholesterol from cells and tissues taking it back to the liver for excretion. Within this pathway APOA4 interacts with key proteins like apolipoprotein A1 and lecithin-cholesterol acyltransferase to aid in this lipid transport mechanism. It also participates in a related lipid homeostasis pathway enhancing lipid absorption efficiency.
Research links APOA4 to atherosclerosis and obesity. Altered expression or function of apolipoprotein A4 often correlates with increased cardiovascular disease risk due to its role in cholesterol transport. It is associated with apolipoprotein A1 as both of these proteins significantly impact lipid profiles related to cardiovascular health. The ability of APOA4 to influence satiety also connects it to obesity suggesting a role in energy balance regulation.
