Human RBP4/Retinol Binding Protein 4 PicoKine® Quick ELISA Kit

Mfr.No.

FEK0831

Sensitivity

<10 pg/ml

Detection Range

312 pg/ml - 20,000 pg/ml

Reactivity

Human

Sample Volume

Concentration (pg/ml)	0	312	625	200000000	20000000	2000000	200000	20000
O.D.	0.029	0.066	0.108	0.215	0.495	1.074	1.866	2.408

Description

Human RBP4/Retinol Binding Protein 4 PicoKine® Quick ELISA Kit (120 minutes, 96 Tests). Quantitate Human RBP4 in cell culture supeatants, serum, plasma (heparin, EDTA) and urine. Sensitivity: 10pg/ml. The brand Picokine indicates this is a premium quality ELISA kit. Each Picokine kit delivers precise quantification, high sensitivity, and excellent reproducibility. Only our most reliable and effective kits qualify as Picokine, guaranteeing top-tier results for your assays.

Alternative Names

Retinol-binding protein 4;Plasma retinol-binding protein;PRBP;RBP;Plasma retinol-binding protein (1-182);Plasma retinol-binding protein (1-181);Plasma retinol-binding protein (1-179);Plasma retinol-binding protein (1-176);RBP4;PRO2222;

Molecular Weight

23010 MW

Immunogen

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

Kit Components

Description Quantity
96-well plate 1
lyophilized Standard
Biotinylated detection antibody (50x) 100 ul
Avidin-Biotin-Peroxidase Complex (30x) 400 µl
Sample diluent 30 ml
Antibody diluent 12 ml
Avidin-Biotin-Peroxidase Diluent 12 ml
Wash Buffer (25x) 20 ml
Color Developing Reagent (TMB) 10 ml
Stop Solution 10 ml
Plate Sealers 4

Cross Reactivity

There is no detectable cross-reactivity with other relevant proteins.

Specificity

Natural and recombinant human RBP4

Subcellular Localization

Secreted.

Sample Type

Cell culture supeatants, Serum, Plasma, Urine

Anticoagulant

heparin or EDTA

Precision

	Intra-Assay Precision			Inter-Assay Precision
Sample	1	2	3	1	2	3
n	16	16	16	24	24	24
Mean (pg/ml)	621	2874	9419	643	2778	10172
Standard deviation	44.09	227.04	668.74	53.36	247.24	752.72
CV (%)	7.1%	7.9%	7.1%	8.3%	8.9%	7.4%

Protein Function

Delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin, this prevents its loss by filtration through the kidney glomeruli.

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.

Reproducibility

Lots	Lot 1 (pg/ml)	Lot 2 (pg/ml)	Lot 3 (pg/ml)	Lot 4 (pg/ml)	Mean (pg/ml)	Standard Deviation	CV (%)
Sample 1	621	574	637	603	608	23.39	3.8%
Sample 2	2874	2703	2656	2896	2782	104.37	3.7%
Sample 3	9419	8739	8492	8429	8769	392.34	4.4%

*number of samples for each test n=16.

Notes

Material Required But Not Provided:
Microplate Reader capable of reading absorbance at 450nm.
Automated plate washer .
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.
500ml graduated cylinders.
Test tubes for dilution.

Gene ID	5950
Gene Name	RBP4
UniProt ID	P02753
Protein Name	Retinol-binding protein 4
Sequence	Belongs to the calycin superfamily. Lipocalin family.

Applications	ELISA

Storage	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.)

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SKU	Supplier No.	Size	Your price	Quantity
BHE21000185	FEK0831	96 wells/kit	$499		Add to Cart

Human RBP4/Retinol Binding Protein 4 PicoKine® Quick ELISA Kit

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