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Human ENPP-2/Autotaxin Quantikine ELISA Kit

R&D Systems, part of Bio-Techne | Catalog # DENP20

R&D Systems, part of Bio-Techne
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DENP20

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Key Product Details

Assay Length

4.5 hours

Sample Type & Volume Required Per Well

Cell Culture Supernates (50 µL), Serum (10 µL), Heparin Plasma (10 µL), Urine (50 µL), Human Milk (50 µL)

Sensitivity

0.157 ng/mL

Assay Range

0.781-50 ng/mL (Cell Culture Supernates, Serum, Heparin Plasma, Urine, Human Milk)

Product Summary for Human ENPP-2/Autotaxin Quantikine ELISA Kit

The Quantikine Human ENPP-2 Immunoassay is a 4.5 hour solid-phase ELISA designed to measure human ENPP-2 in cell culture supernates, serum, plasma, urine, and human milk. It contains NS0-expressed recombinant human ENPP-2 and has been shown to accurately quantitate the recombinant factor. Results obtained using natural human ENPP-2 showed linear curves that were parallel to the standard curves obtained using the Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for naturally occurring human ENPP-2.

Product Specifications

Assay Type

Solid Phase Sandwich ELISA

Format

96-well strip plate

Measurement

Quantitative ELISA

Detection Method

Colorimetric - 450nm (TMB)

Conjugate

HRP

Reactivity

Human

Specificity

Natural and recombinant human ENPP-2

Cross-reactivity

< 0.5% cross-reactivity observed with available related molecules. < 50% cross-species reactivity observed with species tested.

Interference

No significant interference observed with available related molecules.

Precision

Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested on one plate to assess intra-assay precision.

Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in separate assays to assess inter-assay precision.

Cell Culture Supernates, Heparin Plasma, Human Milk, Serum, Urine

Intra-Assay Precision Inter-Assay Precision
Sample 1 2 3 1 2 3
n 20 20 20 20 20 20
Mean (pg/mL) 6.5 13.8 28.9 6.8 14.0 28.9
Standard Deviation 0.18 0.51 0.74 0.32 0.55 0.83
CV% 2.8 3.7 2.6 4.7 3.9 2.9

Recovery for Human ENPP-2/Autotaxin Quantikine ELISA Kit

The recovery of ENPP-2 spiked to levels throughout the range of the assay was evaluated.

Sample Type Average % Recovery Range %
Cell Culture Media (n=4) 102 93-109

Linearity

To assess the linearity of the assay, samples containing and/or spiked with high concentrations of ENPP-2 were serially diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.

Human ENPP-2/Autotaxin ELISA Linearity

Scientific Data Images for Human ENPP-2/Autotaxin Quantikine ELISA Kit

Human ENPP-2/Autotaxin ELISA Standard Curve

Human ENPP-2/Autotaxin ELISA Standard Curve

Preparation and Storage

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: ENPP-2/Autotaxin

ENPP-2, also known as Autotaxin, belongs to the ectonucleotide pyrophosphatase/phosphodiesterase (NPP) family. Some NPPs hydrolyze phosphates from nucleotides and their derivatives. ENPP-2 shares 40 - 50% identity to ENPP1 & 3, all of which contain a N-terminal intracellular domain, a single transmembrane domain and a large extracellular domain that includes a catalytic domain, two somatomedin-B-like domains, and a C-terminal nuclease-like domain. Unlike ENPP-1 and ENPP-3, ENPP-2 has weak activity against nucleotides, but exhibits a lysophospholipase D activity which allows the formation of lysophosphatidic acid (LPA) and choline from lysophosphatidylcholine. The hydrolysis of nucleotides and lysophospholipids by ENPP-2 is mediated by a single catalytic site. Evidence shows LPA and sphingosine 1-phosphate to be specific inhibitors of ENPP-2. ENPP-2 was originally found to stimulate tumor cell motility and has since been found to enhance tumor invasion and metastasis and to be up-regulated in several types of carcinomas including breast and lung.

Long Name

Ectonucleotide Pyrophosphatase/Phosphodiesterase 2

Alternate Names

ATX, Autotaxin, ENPP2, Lysophosphatidic Acid, NPP2, PDNP2

Entrez Gene IDs

5168 (Human); 18606 (Mouse); 84050 (Rat)

Gene Symbol

ENPP2

Additional ENPP-2/Autotaxin Products

Product Documents for Human ENPP-2/Autotaxin Quantikine ELISA Kit

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human ENPP-2/Autotaxin Quantikine ELISA Kit

For research use only

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⚠ WARNING: This product can expose you to chemicals including N,N-Dimethylforamide, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.