Human Plexin A4 ELISA Kit (A312006)

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This product is discontinued

Human Plexin A4 ELISA Kit (A312006) has been discontinued and is no longer available.

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Specifications
Components

Name

Human Plexin A4 ELISA Kit

Description

Human Plexin A4 ELISA Kit is a 90 minute sandwich Enzyme-Linked Immunosorbent Assay (sELISA) designed for the in vitro quantitative determination of human Plexin A4 in serum, plasma, and other biological fluids.

Assay Type

Sandwich (quantitative)

Principle of Assay

Human Plexin A4 ELISA Kit (A312006) employs the sandwich enzyme immunoassay technique for the quantitative measurement of human Plexin A4 in serum, plasma or other biological fluids. An antibody specific for Plexin A4 has been pre-coated onto a 96-well microtiter plate. The standards and test samples are added into the wells and the Plexin A4 present in each sample is bound to the wells by the immobilized antibody. Biotinylated Anti-Plexin A4 Antibody, which also binds the Plexin A4 present in each sample, and Streptavidin-HRP, which binds the Biotinylated Anti-Plexin A4 Antibody, are added and the microtiter plate is incubated. Following incubation, unbound Biotinylated Anti-Plexin A4 Antibody and unbound Streptavidin-HRP are removed by washing, and two substrate solutions are added to the wells. Color develops in proportion to the amount of Plexin A4 captured in each well. The color development is stopped by addition of stop solution which changes the color from blue to yellow and the intensity of the color is then measured. The concentration of Plexin A4 in the samples can then be calculated by reading the O.D. absorbance at 450nm in a microplate reader and referring to the standard curve.

Platform

Pre-coated Microplate (12 x 8 well strips)

Detection Type

Colorimetric

Instrument

Colorimetric Microplate Reader

Sample Type

Serum, plasma or other biological fluids.

Sensitivity

4.47 ng/L

Product Range

75-1200 ng/L

Assay Time

1h 30m

Reactivity

Human

Precision

Intra-assay CV: 4.9%, Inter-assay CV: < 10%

Storage

Store at +4°C. Do not use past expiration date!

Synonyms

KIAA1550, Plexin-A4, PLXNA4, PLXNA4A, PLXNA4B

Product Note

Information online is representative. Always refer to the Product Manual inside the kit.

Disclaimer

This product is for research use only. It is not intended for diagnostic or therapeutic use.

Kit Components

Item	Quantity	Storage
Pre-Coated 96 Well Microplate	12 x 8 Well Strips	+4°C
Standard Solution	500µl	+4°C
Standard Diluent	3ml	+4°C
Biotinylated Detection Antibody	1ml	+4°C
Streptavidin-HRP	6ml	+4°C
Wash Buffer (25X)	20ml	+4°C
Substrate Solution A	6ml	+4°C
Substrate Solution B	6ml	+4°C
Stop Solution	6ml	+4°C
Plate Sealers	5 Adhesive Strips	-
Foil Pouch	1 Zip-Sealed Pouch	-

Required Materials

The following materials are not included in the kit, but are required to run this assay:

Microplate reader capable of measuring absorbance at 450nm ± 10nm.
Squirt bottle, multichannel pipette reservoir, or automated microplate washer.
Graph paper or computer software capable of generating logarithmic functions.
Test tubes and Eppendorf tubes to prepare standards and samples.
Multi- and single-channel pipettes and sterile pipette tips.
Deionized or distilled water.
Absorbent paper towels.
37°C incubator.

Important Notes

Samples cannot be diluted for use with this kit. Owing to the material used to prepare the kit, sample matrix interference may falsely depress the specificity and accuracy of the assay.
Sample concentrations should be estimated before being used in the assay. If the sample concentration is not within the range of the standard curve, users must contact us to determine the optimal sample for their experiments.
Samples containing Sodium Azide (NaN₃) cannot be used in this assay. NaN₃ inhibits the activity of Horseradish Peroxidase (HRP) which is used in the detection step.
This ELISA kit is intended for the analysis of biological samples and has not been validated for purified/recombinant proteins, industrial, or commercial materials. Performance with such samples cannot be guaranteed, as differences in expression, sequence, tags, folding, post-translational modifications, purity, activity, or buffer composition may affect assay results. For further guidance, please contact our technical support team.

Scientific Validation DataValidation Data (1)

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Standard Curve - Human Plexin A4 ELISA Kit (A312006)

Representative standard curve for Human Plexin A4 ELISA Kit (A312006).

Product Citations (1)

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(2)

Targeted proteomics reveals immune protein patterns in serum from patients with calcific aortic stenosis

This publication cites Human Plexin A4 ELISA Kit (A312006).

Article Abstract

Calcific aortic valve disease (CAVD) is a progressive condition with poor prognosis once symptomatic. The disease's progression is driven by a combination of mechanical stress, lipid infiltration, and immune responses, which involve both innate and adaptive immune systems. To explore the role of immune-related proteins in CAVD, we applied a targeted proteomic approach based on the proximity extension assay technique. Ten proteins were downregulated in patients with CAVD with respect to control subjects, indicating disrupted biological processes such as redox homeostasis, immune response, and cell motility. A protein-protein interaction network revealed connections between these proteins, with notable clusters associated with immune regulation and redox homeostasis. Further analysis identified two distinct patient subgroups, suggesting heterogeneity among patients with CAVD, which could help with patient stratification. The study identified proteins that may serve as candidate biomarkers for early detection of CAVD and emphasizes the role of immune-driven mechanisms in CAVD.

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