Regulatory Status:RUO
Alternative:PRBP; RBP; Plasma retinol-binding protein; Retinol Binding Protein 4, Plasma
Regulatory Status:
Alternative:
Detection Method:
ELISA
Assay Type:
Sandwich
Detection Range:
0.78-50ng/mL
Sensitivity:
0.29ng/mL
Specificity:
This kit recognizes Mouse RBP-4 in samples. No significant cross-reactivity or interference between Mouse RBP-4 and analogues was observed.
Sample Type:
Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Research Area:
Signal Transduction
Retinol binding protein 4, also known as RBP4, is a transporter protein for retinol (vitamin A alcohol). RBP4 has a molecular weight of approximately 21 kDa and is encoded by the RBP4 gene in humans. It is mainly, though not exclusively, synthesized in the liver and circulates in the bloodstream as a hepatokine bound to retinol in a complex with transthyretin. RBP4 has been a drug target for ophthalmology research due to its role in vision. RBP4 may also be involved in metabolic diseases as suggested by recent studies.
As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, wash technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data are provided below for reference only.
Concentration (ng/mL) | 50 | 25 | 12.5 | 6.25 | 3.12 | 1.56 | 0.78 | 0 |
OD | 2.4 | 1.69 | 1.29 | 0.9 | 0.61 | 0.43 | 0.31 | 0.09 |
Corrected OD | 2.31 | 1.6 | 1.2 | 0.81 | 0.52 | 0.34 | 0.22 | - |
Intra-assay Precision (Precision within an assay):CV% < 10%; Inter-assay Precision (Precision between assays):CV% < 10%
The recovery of Mouse RBP-4 spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.
Sample Type | Range(%) | Average Recovery(%) |
Serum(n=8) | 84-102 | 96 |
Plasma(n=8) | 92-105 | 102 |
Cell Culture Supernates(n=8) | 96-108 | 105 |
Samples were spiked with high concentrations of Mouse RBP-4 and diluted with Universal Diluent to produce samples with values within the range of the assay.
Serum(n=4) | Plasma(n=4) | Cell Culture Supernates(n=4) | ||
1 : 2 | Range (%) | 84-95 | 88-96 | 90-110 |
Average (%) | 91 | 93 | 96 | |
1 : 4 | Range (%) | 89-103 | 87-108 | 105-115 |
Average (%) | 94 | 98 | 108 |
CATALOGUE