Recombinant Human NKG2DL Protein (C-6His)

Beta LifeScience SKU/CAT #: BL-1011NP
BL-1011NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
BL-1011NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)

Recombinant Human NKG2DL Protein (C-6His)

Beta LifeScience SKU/CAT #: BL-1011NP
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Product Overview

Description Recombinant Human UL16 Binding Protein-1/NKG2D Ligand 1 is produced by our Mammalian expression system and the target gene encoding Gly26-Pro215 is expressed with a 6His tag at the C-terminus.
Accession Q9BZM6
Synonym NKG2D ligand 1; N2DL-1; NKG2DL1; ALCAN-beta; Retinoic acid early transcript 1I; UL16-binding protein 1; ULBP1
Gene Background ULBP1, also known as RAET1I and NKG2DL1, is a member of the ULBP/RAET1 gene family. ULBP1 plays an important role in immune responses, especially in cancer and infectious diseases, and is well-known to bind to NKG2D together with at least ULBP 2 and 3. These proteins are distantly related to major histocompatibility class I (MHC I) molecules, possessing the alpha 1 and alpha 2 Ig-like domains, but lacking the alpha 3 domain. Unlike MHC Class I, they have no capacity to bind peptide or interact with beta2-microglobulin. It can activate multiple signaling pathways in primary NK cells, gamma delta T cells, and CD8+ alpha beta T cells, resulting in the production of cytokines and chemokines.ULBP1 is expressed in wide range of tissues including heart, brain, lung, liver, bone marrow and some tumor cells, T-cells, B-cells, As an unconventional member of the MHC class I family, ULBP1 is able to interact with soluble CMV glycoprotein UL16 in CMV infected cells. The interaction with UL16 blocked the interaction with the NKG2D receptor, and thus might escape the immune surveillance. Furthermore, UL16 also causes ULBP1 to be retained in the ER and cis-Golgi apparatus so that it does not reach the cell surface. The ULBP1 regulation may have implications for development of new therapeutic strategies against cancer cells.
Molecular Mass 23.3 KDa
Apmol Mass 25-30 KDa, reducing conditions
Formulation Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.
Endotoxin Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Purity Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Biological Activity Not tested
Reconstitution Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Storage Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Usage For Research Use Only

Target Details

Target Function Binds and activates the KLRK1/NKG2D receptor, mediating natural killer cell cytotoxicity.
Subcellular Location Cell membrane; Lipid-anchor, GPI-anchor. Endoplasmic reticulum.
Protein Families MHC class I family
Database References
Tissue Specificity Expressed in T-cells, B-cells, erythroleukemia cell lines and in a wide range of tissues including heart, brain, lung, liver, testis, lymph node, thymus, tonsil and bone marrow. Also found in fetal heart, brain, lung and liver.

Gene Functions References

  1. we show that Simian Virus 40 (SV40)...evades NK cell attack through the down regulation of...ULBP1 PMID: 26992229
  2. ATF4 drives ULBP1 gene expression in cancer cell lines, while the RNA-binding protein RBM4 supports ULBP1 expression by suppressing a novel alternatively spliced isoform of ULBP1 mRNA. PMID: 26565589
  3. expression determines intrinsic acute myeloid leukemia susceptibility to allogeneic V[gamma]9V[delta]2 T cells PMID: 24911793
  4. recurrence-free survival of patients with ULBP1-negative hepatocellular carcinoma (HCC) was significantly shorter than that of patients with ULBP1-positive HCC PMID: 21756848
  5. recombinant ULBP1 fused to CD45 caused a reduction in cytotoxicity and degranulation by NK cells, implying a role for receptor ligand distribution in the activation of NK cell responses PMID: 21464092
  6. Data show that ULBP1, TFR2 and IFITM1 were associated with increased susceptibility to Vgamma9Vdelta2 T-cell cytotoxicity. PMID: 20220060
  7. These results identify Mult1 as a target for the MARCH family of E3 ligases PMID: 20870941
  8. As NKG2D ligand, ULBP1 are expressed on immature dendritic cells and plays an important role in the cytotoxic effect of NK cells against iDC. PMID: 18394338
  9. Data show that the protease NS3/4A of HCV down-regulates ULBP1 expression by inhibiting the transcription of ULBP1. PMID: 19500498
  10. ULBP1 binds to the NKG2D receptor and activates multiple signaling pathways in primary natural killer cells. PMID: 11777960
  11. The NKG2D ligand ULBP1 is up-regulated and readily detectable intracellularly in the endoplasmic reticulum of human cytomegalovirus-infected fibroblasts, where it colocalizes with viral protein UL16. PMID: 12847260
  12. ULBP1 is a human ligand of the NKG2D receptor PMID: 16901903
  13. The selective induction of ULBP1 expression by proteasome inhibitor drugs, along with variable NKG2D ligand expression by human tumor cells, indicates that NKG2D ligand genes are independently regulated. PMID: 19414815

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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