Reactivity | HuSpecies Glossary |
Applications | Bioactivity |
Format | Carrier-Free |
Additional Information | Biotinylated |
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Details of Functionality | Measured by its binding ability in a functional ELISA. When Recombinant Human NKG2D/CD314 (Catalog #
1299-NK) is immobilized at 1 μg/mL, 100 μL/well, the concentration of Biotinylated Recombinant Human ULBP‑2 His-tag Avi-tag (Catalog # AVI10538) that produces 50% of the optimal binding response is approximately 175‑875 ng/mL. |
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Source | Human embryonic kidney cell, HEK293-derived human ULBP-2 protein
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Accession # | |||||||
N-terminal Sequence | Gly26 |
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Structure / Form | Biotinylated via Avi-tag |
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Protein/Peptide Type | Recombinant Proteins |
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Purity | >95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining. |
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Endotoxin Note | <0.10 EU per 1 μg of the protein by the LAL method. |
Dilutions |
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Theoretical MW | 24 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
SDS-PAGE | 30-38 kDa, under reducing conditions |
Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. |
Purity | >95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining. |
Reconstitution Instructions | Reconstitute at 200 μg/mL in PBS. |
ULBP-2 is a member of a family of cell-surface proteins that function as ligands for human NKG2D. ULBP-2 has also been described under the names RaeT1H (retinoic acid early transcript), NKG2DL2, and ALCAN-alpha. The name ULBP-2 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-2 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 – 60%. 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. Some family members, including ULBP-2, are anchored to the membrane via a GPI-linkage, whereas others have transmembrane domains. ULBP-2 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. The ULBPs are expressed on some tumor cells and have been implicated in tumor surveillance. Our biotinylated Avi-tag ULBP-2 features biotinylation at a single site contained within the Avi-tag, a unique 15 amino acid peptide. Protein orientation will be uniform when bound to streptavidin-coated surface due to the precise control of biotinylation and the rest of the protein is unchanged so there is minimum interference in the protein's bioactivity.
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