Human Cardiovascular ELISA Kits
Human EPHA1 (Ephrin Type A Receptor 1) CLIA Kit (HUES00612)
- SKU:
- HUES00612
- Product Type:
- ELISA Kit
- ELISA Type:
- CLIA Kit
- Size:
- 96 Assays
- Sensitivity:
- 37.5pg/mL
- Range:
- 62.5-4000pg/mL
- ELISA Type:
- Sandwich
- Reactivity:
- Human
- Sample Type:
- Serum, plasma and other biological fluids
- Research Area:
- Cardiovascular
Description
| Assay type: | Sandwich |
| Format: | 96T |
| Assay time: | 4.5h |
| Reactivity: | Human |
| Detection method: | Chemiluminescence |
| Detection range: | 62.50-4000 pg/mL |
| Sensitivity: | 37.50 pg/mL |
| Sample volume: | 100µL |
| Sample type: | Serum, plasma and other biological fluids |
| Repeatability: | CV < 15% |
| Specificity: | This kit recognizes Human EPHA1 in samples. No significant cross-reactivity or interference between Human EPHA1 and analogues was observed. |
This kit uses Sandwich-CLIA as the method. The micro CLIA plate provided in this kit has been pre-coated with an antibody specific to Human EPHA1. Standards or samples are added to the appropriate micro CLIA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human EPHA1 and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well successively and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human EPHA1, biotinylated detection antibody and Avidin-HRP conjugate will appear fluorescence. The Relative light unit (RLU) value is measured spectrophotometrically by the Chemiluminescence immunoassay analyzer. The RLU value is positively associated with the concentration of Human EPHA1. The concentration of Human EPHA1 in the samples can be calculated by comparing the RLU of the samples to the standard curve.
| UniProt Protein Function: | EphA1: a receptor tyrosine kinase. Receptor for members of the ephrin-A family. Binds with a low affinity to ephrin-A1. The Eph receptor tyrosine kinase family, the largest in the tyrosine kinase group, has fourteen members. They bind membrane-anchored ligands, ephrins, at sites of cell-cell contact, regulating the repulsion and adhesion of cells that underlie the establishment, maintenance, and remodeling of patterns of cellular organization. Eph signals are particularly important in regulating cell adhesion and cell migration during development, axon guidance, homeostasis and disease. EphA receptors bind to GPI-anchored ephrin-A ligands, while EphB receptors bind to ephrin-B proteins that have a transmembrane and cytoplasmic domain. Interactions between EphB receptor kinases and ephrin-B proteins transduce signals bidirectionally, signaling to both interacting cell types. Eph receptors and ephrins also regulate the adhesion of endothelial cells and are required for the remodeling of blood vessels. Misexpressed in several cancers, including upregulation in head and neck cancer, and downregulation in invasive breast cancer cell lines and glioblastoma |
| UniProt Protein Details: | Protein type:Membrane protein, integral; EC 2. 7. 10. 1; Protein kinase, tyrosine (receptor); Kinase, protein; Protein kinase, TK; TK group; Eph family Chromosomal Location of Human Ortholog: 7q34 Cellular Component: integral to plasma membrane; plasma membrane Molecular Function:ATP binding; protein kinase activity; protein kinase binding; transmembrane-ephrin receptor activity Biological Process: angiogenesis; cell surface receptor linked signal transduction; ephrin receptor signaling pathway; negative regulation of cell migration; negative regulation of protein kinase activity; peptidyl-tyrosine phosphorylation; positive regulation of angiogenesis; positive regulation of cell migration; positive regulation of cell proliferation; positive regulation of cell-matrix adhesion; positive regulation of stress fiber formation; protein amino acid autophosphorylation; regulation of GTPase activity; somatic stem cell maintenance |
| NCBI Summary: | This gene belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family. EPH and EPH-related receptors have been implicated in mediating developmental events, particularly in the nervous system. Receptors in the EPH subfamily typically have a single kinase domain and an extracellular region containing a Cys-rich domain and 2 fibronectin type III repeats. The ephrin receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. This gene is expressed in some human cancer cell lines and has been implicated in carcinogenesis. [provided by RefSeq, Jul 2008] |
| UniProt Code: | P21709 |
| NCBI GenInfo Identifier: | 317373566 |
| NCBI Gene ID: | 2041 |
| NCBI Accession: | P21709. 4 |
| UniProt Secondary Accession: | P21709,Q15405, A1L3V3, B5A966, B5A967, |
| UniProt Related Accession: | P21709 |
| Molecular Weight: | 51,069 Da |
| NCBI Full Name: | Ephrin type-A receptor 1 |
| NCBI Synonym Full Names: | EPH receptor A1 |
| NCBI Official Symbol: | EPHA1 |
| NCBI Official Synonym Symbols: | EPH; EPHT; EPHT1 |
| NCBI Protein Information: | ephrin type-A receptor 1 |
| UniProt Protein Name: | Ephrin type-A receptor 1 |
| UniProt Synonym Protein Names: | EPH tyrosine kinase; EPH tyrosine kinase 1; Erythropoietin-producing hepatoma receptor; Tyrosine-protein kinase receptor EPH |
| Protein Family: | Ephrin type-A receptor |
| UniProt Gene Name: | EPHA1 |
| UniProt Entry Name: | EPHA1_HUMAN |
As the RLU values of the standard curve may vary according to the conditions of the actual assay performance (e. g. operator, pipetting technique, washing technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data is provided below for reference only.
| Concentration (pg/mL) | RLU | Average | Corrected |
| 4000 | 58447 59715 | 59081 | 59046 |
| 2000 | 27427 28291 | 27859 | 27824 |
| 1000 | 14174 12794 | 13484 | 13449 |
| 500 | 6520 6690 | 6605 | 6570 |
| 250 | 3499 2987 | 3243 | 3208 |
| 125 | 1617 1545 | 1581 | 1546 |
| 62.50 | 751 759 | 755 | 720 |
| 0 | 35 35 | 35 | -- |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human EPHA1 were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human EPHA1 were tested on 3 different plates, 20 replicates in each plate.
| Intra-assay Precision | Inter-assay Precision | |||||
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 20 | 20 | 20 |
| Mean (pg/mL) | 183.06 | 424.08 | 1717.20 | 189.39 | 390.42 | 1573.46 |
| Standard deviation | 19.57 | 34.60 | 122.44 | 17.94 | 31.94 | 165.37 |
| C V (%) | 10.69 | 8.16 | 7.13 | 9.47 | 8.18 | 10.51 |
Recovery
The recovery of Human EPHA1 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=5) | 95-108 | 101 |
| EDTA plasma (n=5) | 96-112 | 102 |
| Cell culture media (n=5) | 98-110 | 103 |
Linearity
Samples were spiked with high concentrations of Human EPHA1 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
| 1:2 | Range (%) | 86-98 | 94-109 | 91-103 |
| Average (%) | 91 | 101 | 97 | |
| 1:4 | Range (%) | 96-111 | 97-111 | 87-100 |
| Average (%) | 104 | 104 | 93 | |
| 1:8 | Range (%) | 95-107 | 102-116 | 87-97 |
| Average (%) | 101 | 108 | 92 | |
| 1:16 | Range (%) | 95-108 | 87-102 | 99-114 |
| Average (%) | 101 | 93 | 105 |
An unopened kit can be stored at 4°C for 1 month. If the kit is not used within 1 month, store the items separately according to the following conditions once the kit is received.
| Item | Specifications | Storage |
| Micro CLIA Plate(Dismountable) | 8 wells ×12 strips | -20°C, 6 months |
| Reference Standard | 2 vials | |
| Concentrated Biotinylated Detection Ab (100×) | 1 vial, 120 µL | |
| Concentrated HRP Conjugate (100×) | 1 vial, 120 µL | -20°C(shading light), 6 months |
| Reference Standard & Sample Diluent | 1 vial, 20 mL | 4°C, 6 months |
| Biotinylated Detection Ab Diluent | 1 vial, 14 mL | |
| HRP Conjugate Diluent | 1 vial, 14 mL | |
| Concentrated Wash Buffer (25×) | 1 vial, 30 mL | |
| Substrate Reagent A | 1 vial, 5 mL | 4°C (shading light) |
| Substrate Reagent B | 1 vial, 5 mL | 4°C (shading light) |
| Plate Sealer | 5 pieces | |
| Product Description | 1 copy | |
| Certificate of Analysis | 1 copy |
- Set standard, test sample and control (zero) wells on the pre-coated plate and record theirpositions. It is recommended to measure each standard and sample in duplicate. Note: addall solutions to the bottom of the plate wells while avoiding contact with the well walls. Ensuresolutions do not foam when adding to the wells.
- Aliquot 100µl of standard solutions into the standard wells.
- Add 100µl of Sample / Standard dilution buffer into the control (zero) well.
- Add 100µl of properly diluted sample (serum, plasma, tissue homogenates and otherbiological fluids. ) into test sample wells.
- Cover the plate with the sealer provided in the kit and incubate for 90 min at 37°C.
- Aspirate the liquid from each well, do not wash. Immediately add 100µL of BiotinylatedDetection Ab working solution to each well. Cover the plate with a plate seal and gently mix. Incubate for 1 hour at 37°C.
- Aspirate or decant the solution from the plate and add 350µL of wash buffer to each welland incubate for 1-2 minutes at room temperature. Aspirate the solution from each well andclap the plate on absorbent filter paper to dry. Repeat this process 3 times. Note: a microplatewasher can be used in this step and other wash steps.
- Add 100µL of HRP Conjugate working solution to each well. Cover with a plate seal andincubate for 30 min at 37°C.
- Aspirate or decant the solution from each well. Repeat the wash process for five times asconducted in step 7.
- Add 100µL of Substrate mixture solution to each well. Cover with a new plate seal andincubate for no more than 5 min at 37°C. Protect the plate from light.
- Determine the RLU value of each well immediately.
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