Human ULBP1/NKG2DL1 ELISA Kit
Key features and details
- Specification:
- Sensitivity:
- Standard Curve Range:
- Standard Curve Gradient:
- Number of Incubations:
- Sample Volume:
- Assay type:
- Operation Duration:
-
Brand:
CAT.NO. : AEH0150
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Product Details
Background
ULBP-1 is a member of a family of cell-surface proteins that function as ligands for human NKG2D. ULBP-1 has also been described under the names RaeT1I (retinoic acid early transcript), ALCAN-beta, and NKG2DL1. The name ULBP-1 derives from the original identification of three proteins, ULBP-1, -2, and -3, as ligands for the human cytomegalovirus glycoprotein UL16; they were designated UL16 binding proteins (ULBP). The gene for ULBP-1 resides in a cluster of ten related genes, six of which encode potentially functional glycoproteins. Amino acid sequence identity within this family ranges from 30-95%. These proteins are distantly related to MHC class I proteins, but they possess only the alpha 1 and alpha 2 Ig-like domains, and they have no capacity to bind peptide or interact with beta 2-microglobulin. They are anchored to the membrane via a GPI-linkage. ULBP-1 and several other family members are known to bind to human NKG2D, an activating receptor expressed on NK cells, NKT cells, gamma δ T cells, and CD8+ alpha beta T cells. Engagement of NKG2D results in the activation of cytolytic activity and/or cytokine production by these effector cells. ULBP-1 is expressed on some tumor cells and has been implicated in tumor surveillance.
Typical data
|
pg/ml |
O.D. |
Average |
Corrected |
|
|
0.00 |
0.0193 |
0.0180 |
0.0187 |
|
|
1.37 |
0.0348 |
0.0335 |
0.0342 |
0.0155 |
|
4.12 |
0.0687 |
0.0626 |
0.0657 |
0.0470 |
|
12.35 |
0.1540 |
0.1598 |
0.1569 |
0.1383 |
|
37.04 |
0.4233 |
0.3886 |
0.4060 |
0.3873 |
|
111.11 |
1.1080 |
1.0290 |
1.0685 |
1.0499 |
|
333.33 |
2.4510 |
2.4130 |
2.4320 |
2.4134 |
|
1000.00 |
3.8060 |
3.8000 |
3.8030 |
3.7844 |
Precision
|
|
Intra-assay Precision |
Inter-assay Precision |
||||
|
Sample Number |
S1 |
S2 |
S3 |
S1 |
S2 |
S3 |
|
22 |
22 |
22 |
6 |
6 |
6 |
|
|
Average(pg/ml) |
16.4 |
85.0 |
258.5 |
17.5 |
92.7 |
302.1 |
|
Standard Deviation |
0.7 |
2.3 |
14.5 |
0.7 |
3.9 |
15.9 |
|
Coefficient of Variation(%) |
4.4 |
2.7 |
5.6 |
3.7 |
4.2 |
5.3 |
Inter-assay Precision (Precision between assays) Three samples of known concentration were tested six times on one plate to assess intra-assay precision.
Spike Recovery
The spike recovery was evaluated by spiking 3 levels of human ULBP1/NKG2DL1 into health human serum sample. The un-spiked serum was used as blank in this experiment. The recovery ranged from 82% to 120% with an overall mean recovery of 99%.
Sample Values
| Sample Matrix | Sample Evaluated | Range (pg/ml) | Detectable (%) | Mean of Detectable (pg/ml) |
|---|---|---|---|---|
| Serum | 30 | 0.18-1.88 | 100 | 0.8 |
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