RBP4 ELISA Kit

Catalog No. ABIN921107

This Colorimetric ELISA kit is designed for the quantitative measurement of Human RBP4. There are 2 publications available.

Quick Overview for RBP4 ELISA Kit (ABIN921107)

Target: RBP4 (Retinol Binding Protein 4, Plasma (RBP4))

Binding Specificity: AA 19-201

Reactivity: Human

Detection Method: Colorimetric

Method Type: Sandwich ELISA

Detection Range: 312 pg/mL - 20000 pg/mL

Application: ELISA

Sample Type: Cell Culture Supernatant, Cell Lysate, Plasma (EDTA), Plasma (heparin), Serum, Urine

Product Details RBP4 ELISA Kit

Minimum Detection Limit: 312 pg/mL

Purpose: Sandwich Human RBP4/Retinol Binding Protein 4 ELISA Kit to quantitate Human RBP4 in cell culture supernatants, cell lysates, serum, plasma(heparin, EDTA) and urine.

Analytical Method: Quantitative

Specificity: Expression system for standard: NS0
Immunogen sequence: E19-L201

Capture antibody and Detection antibody: monoclonal antibody from mouse, polyclonal antibody from goat

Cross-Reactivity (Details): There is no detectable cross-reactivity with other relevant proteins.

Sensitivity: < 10 pg/mL

Components:

1. Pre-coated 96-well strip microplate
2. Standard
3. Biotinylated antibody (100x)
4. Avidin-Biotin-Peroxidase Complex (100x)
5. Sample Diluent
6. Antibody Diluent
7. Avidin-Biotin-Peroxidase Diluent
8. Color Developing Reagent (TMB)
9. Stop Solution
10. Wash Buffer (25x)
11. Adhesive plate sealers

Material not included: Microplate Reader capable of reading absorbance at 450nm. Incubator. Automated plate washer (optional). Pipettes and pipette tips capable of precisely dispensing 0.5 μL through 1 mL volumes of aqueous solutions. Multichannel pipettes are recommended for large amount of samples. Deionized or distilled water. 500 mL graduated cylinders. Test tubes for dilution.

Application Details

Application Notes: Before using Kit, spin tubes and bring down all components to bottom of tube. Duplicate well assay was recommended for both standard and sample testing.

Sample Volume: 100 μL

Plate: Pre-coated

Protocol: ELISA Kit is based on standard sandwich enzyme-linked immune-sorbent assay technology. An antibody has been precoated onto 96-well plates. Standards and test samples are added to the wells, a biotinylated detection antibody specific for target is added subsequently and then followed by washing with PBS or TBS buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with PBS or TBS buffer. HRP substrate TMB was used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the target amount in sample captured in plate.

Assay Precision: Intra-Assay Precision (CV%): 7.1%, 7.9%, 7.1%
Inter-Assay Precision (CV%): 8.3%, 8.9%, 7.4%

Restrictions: For Research Use only

Handling

Handling Advice: Avoid multiple freeze-thaw cycles.

Storage: -20 °C,4 °C

Storage Comment: Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)

Expiry Date: 12 months

References for RBP4 ELISA Kit (ABIN921107)

Ding, Luo, Yu, Zhou, Wu: "Vitreous levels of apolipoprotein A1 and retinol binding protein 4 in human rhegmatogenous retinal detachment associated with choroidal detachment." in: Molecular vision, Vol. 24, pp. 252-260, (2018) (PubMed).

Farahbakhsh-Farsi, Djazayery, Eshraghian, Koohdani, Zarei, Javanbakht, Derakhshanian, Djalali: "Effect of Omega-3 Supplementation on Lipocalin 2 and Retinol-Binding Protein 4 in Type 2 Diabetic Patients." in: Iranian journal of public health, Vol. 45, Issue 2, pp. 179-85, (2016) (PubMed).

Target Details for RBP4

Target: RBP4 (Retinol Binding Protein 4, Plasma (RBP4))

Alternative Name: RBP4

Background:

Background: Retinol binding protein 4, plasma, also known as RBP4, belongs to the lipocalin family and is the specific carrier for retinol (vitamin A alcohol) in the blood. It is protein that in humans is encoded by the RBP4 gene. RBP4 gene resides just centromeric of the cluster of CYP2C genes on 10q24. The mouse Rbp4 locus is closely linked and just proximal to the locus for phenobarbital-inducible cytochrome P450-2c (Cyp-2c) at the distal end of chromosome 19. It delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin, which prevents its loss by filtration through the kidney glomeruli. A deficiency of vitamin A blocks secretion of the binding protein posttranslationally and results in defective delivery and supply to the epidermal cells. The standard used in this kit is recombinant protein, with E19-L201 aa sequence, the molecular weight is 22kda.

Gene Full Name: retinol binding protein 4

Gene ID: 5950

UniProt: P02753

Pathways: Regulatory RNA Pathways, Positive Regulation of Peptide Hormone Secretion, Carbohydrate Homeostasis, Production of Molecular Mediator of Immune Response