Human Cardiovascular ELISA Kits
Human WARS (Tryptophanyl tRNA Synthetase) ELISA Kit (HUES02825)
- SKU:
- HUES02825
- Product Type:
- ELISA Kit
- Size:
- 96 Assays
- Uniprot:
- P23381
- Sensitivity:
- 0.47ng/mL
- Range:
- 0.78-50ng/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: | Colormetric |
| Detection Range: | 0.78-50 ng/mL |
| Sensitivity: | 0.47 ng/mL |
| Sample Volume Required Per Well: | 100µL |
| Sample Type: | Serum, plasma and other biological fluids |
| Specificity: | This kit recognizes Human WARS in samples. No significant cross-reactivity or interference between Human WARS and analogues was observed. |
This ELISA kit uses Sandwich-ELISA as the method. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human WARS. Standards or samples are added to the appropriate micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human WARS 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 WARS, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by adding Stop Solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human WARS. The concentration of Human WARS in samples can be calculated by comparing the OD of the samples to the standard curve.
| UniProt Protein Function: | WARS: Isoform 1, isoform 2 and T1-TrpRS have aminoacylation activity while T2-TrpRS lacks it. Isoform 2, T1-TrpRS and T2-TrpRS possess angiostatic activity whereas isoform 1 lacks it. T2-TrpRS inhibits fluid shear stress-activated responses of endothelial cells. Regulates ERK, Akt, and eNOS activation pathways that are associated with angiogenesis, cytoskeletal reorganization and shear stress-responsive gene expression. Belongs to the class-I aminoacyl-tRNA synthetase family. 2 isoforms of the human protein are produced by alternative splicing. |
| UniProt Protein Details: | Protein type:Translation; Amino Acid Metabolism - tryptophan; Ligase; EC 6. 1. 1. 2 Chromosomal Location of Human Ortholog: 14q32. 31 Cellular Component: cytoplasm; nucleus; cytosol Molecular Function:protein binding; tryptophan-tRNA ligase activity; ATP binding Biological Process: negative regulation of cell proliferation; tRNA aminoacylation for protein translation; tryptophanyl-tRNA aminoacylation; translation; gene expression; angiogenesis; regulation of angiogenesis |
| NCBI Summary: | Aminoacyl-tRNA synthetases catalyze the aminoacylation of tRNA by their cognate amino acid. Because of their central role in linking amino acids with nucleotide triplets contained in tRNAs, aminoacyl-tRNA synthetases are thought to be among the first proteins that appeared in evolution. Two forms of tryptophanyl-tRNA synthetase exist, a cytoplasmic form, named WARS, and a mitochondrial form, named WARS2. Tryptophanyl-tRNA synthetase (WARS) catalyzes the aminoacylation of tRNA(trp) with tryptophan and is induced by interferon. Tryptophanyl-tRNA synthetase belongs to the class I tRNA synthetase family. Four transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jul 2008] |
| UniProt Code: | P23381 |
| NCBI GenInfo Identifier: | 135191 |
| NCBI Gene ID: | 7453 |
| NCBI Accession: | P23381. 2 |
| UniProt Secondary Accession: | P23381,P78535, Q502Y0, Q53XB6, Q9UDI5, Q9UDL3, A6NGN1 A6NID3, |
| UniProt Related Accession: | P23381 |
| Molecular Weight: | 471 |
| NCBI Full Name: | Tryptophan--tRNA ligase, cytoplasmic |
| NCBI Synonym Full Names: | tryptophanyl-tRNA synthetase |
| NCBI Official Symbol: | WARS |
| NCBI Official Synonym Symbols: | IFI53; IFP53; GAMMA-2 |
| NCBI Protein Information: | tryptophan--tRNA ligase, cytoplasmic; hWRS; trpRS; interferon-induced protein 53; tryptophan tRNA ligase 1, cytoplasmic |
| UniProt Protein Name: | Tryptophan--tRNA ligase, cytoplasmic |
| UniProt Synonym Protein Names: | Interferon-induced protein 53; IFP53; Tryptophanyl-tRNA synthetase; TrpRS; hWRS |
| Protein Family: | Tryptophan--tRNA ligase |
| UniProt Gene Name: | WARS |
| UniProt Entry Name: | SYWC_HUMAN |
As the OD 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 (ng/mL) | O.D | Average | Corrected |
| 50 | 2.349 2.353 | 2.351 | 2.299 |
| 25 | 1.558 1.61 | 1.584 | 1.532 |
| 12.5 | 0.894 0.86 | 0.877 | 0.825 |
| 6.25 | 0.434 0.462 | 0.448 | 0.396 |
| 3.13 | 0.251 0.243 | 0.247 | 0.195 |
| 1.57 | 0.164 0.136 | 0.15 | 0.098 |
| 0.78 | 0.097 0.107 | 0.102 | 0.05 |
| 0 | 0.043 0.061 | 0.052 | -- |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human WARS were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human WARS 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 (ng/mL) | 2.33 | 6.13 | 20.33 | 2.43 | 6.38 | 18.88 |
| Standard deviation | 0.13 | 0.31 | 0.96 | 0.14 | 0.26 | 0.69 |
| C V (%) | 5.58 | 5.06 | 4.72 | 5.76 | 4.08 | 3.65 |
Recovery
The recovery of Human WARS 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) | 94-107 | 99 |
| EDTA plasma (n=5) | 83-95 | 90 |
| Cell culture media (n=5) | 95-110 | 101 |
Linearity
Samples were spiked with high concentrations of Human WARS 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 (%) | 94-108 | 90-102 | 97-111 |
| Average (%) | 102 | 95 | 105 | |
| 1:4 | Range (%) | 92-108 | 82-95 | 88-102 |
| Average (%) | 99 | 88 | 94 | |
| 1:8 | Range (%) | 90-104 | 80-92 | 84-95 |
| Average (%) | 95 | 85 | 90 | |
| 1:16 | Range (%) | 87-98 | 79-92 | 85-100 |
| Average (%) | 92 | 85 | 92 |
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 ELISA 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 | 1 vial, 10 mL | 4°C(shading light) |
| Stop Solution | 1 vial, 10 mL | 4°C |
| 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 90µL of Substrate Reagent to each well. Cover with a new plate seal and incubate forapproximately 15 min at 37°C. Protect the plate from light. Note: the reaction time can beshortened or extended according to the actual color change, but not by more than 30min.
- Add 50 µL of Stop Solution to each well. Note: Adding the stop solution should be done inthe same order as the substrate solution.
- Determine the optical density (OD value) of each well immediately with a microplate readerset at 450 nm.
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