Recombinant Cynomolgus Monkey TIGIT Fc Chimera Protein, CF

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When Recombinant Human CD155/PVR (Catalog # 2530-CD) is coated at 2.5 μg/mL (100 μL/well), Recombinant Cynomolgus Monkey TIGIT Fc Chimera (Catalog # 9380-TG)binds with an ED50 of12-72 ng/mL.

Product Details

Summary
Reactivity Pm-CmSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

Order Details

Recombinant Cynomolgus Monkey TIGIT Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its binding ability in a functional ELISA. When Recombinant Human CD155/PVR (Catalog # 2530-CD) is coated at 2.5 μg/mL (100 μL/well), the concentration of Recombinant Cynomolgus Monkey TIGIT Fc Chimera that produces 50% optimal binding response is 12-72 ng/mL.
Source
Human embryonic kidney cell, HEK293-derived cynomolgus monkey TIGIT protein
Cynomolgus Monkey TIGIT 
(Met22-Pro142)
Accession # XP_005548158
IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Met22
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
40 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
43 - 60 kDa, reducing conditions

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
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.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Cynomolgus Monkey TIGIT Fc Chimera Protein, CF

  • T cell immunoreceptor with Ig and ITIM domains
  • TIGIT
  • VSIG9
  • VSTM3
  • WUCAM

Background

TIGIT (T cell Immunoreceptor with Ig and ITIM domains), also called VSTM3 (V-set and transmembrane domain-containing 3), VSIG9 (V-set and Ig domain-containing 9) and WUCAM (Washington University cell adhesion molecule) is a 30-34 kDa type I transmembrane protein that is a member of the CD28 family within the Ig superfamily of proteins (1-4). Human TIGIT cDNA encodes 244 amino acids (aa) including a 21 aa signal sequence, a 120 aa extracellular region with a V-type Ig-like domain and two potential N-glycosylation site, a 21 aa transmembrane sequence, and an 82 aa cytoplasmic domain with an ITIM motif (5). A 170 aa variant diverges after aa 166 (5). Within the ECD, human TIGIT shares only 68-75% aa sequence identity with mouse, porcine, canine, equine and bovine TIGIT. Cyno TIGIT shares 88.4% homology with human TIGIT. TIGIT is expressed on NK cells and subsets of activated, memory and regulatory T cells, and particularly on follicular helper T cells within secondary lymphoid organs (1, 2, 6-8). It binds to CD155/PVR/Necl-5 and Nectin-2/CD112/PVRL2 that appear on dendritic cells (DC) and endothelium (1-3, 7). Binding of TIGIT by DC induces IL-10 release and inhibits IL-12 production (2). Ligation of TIGIT on T cells down‑regulates TCR-mediated activation and subsequent proliferation, while NK cell TIGIT ligation blocks NK cell cytotoxicity (6-8). Through CD155 and Nectin-2, which also interact with DNAM-1/CD226 and CD96/Tactile, TIGIT is part of an interacting network of Ig superfamily members that may augment or oppose each other (3, 4, 6, 7). In particular, TIGIT binding to CD155 can antagonize the effects of DNAM-1 (6, 7). Soluble TIGIT is able to compete with DNAM-1 for CD155 binding and attenuates T cell responses, while mice lacking TIGIT show increased T cell responses and susceptibility to autoimmune challenges (2, 3, 8).
  1. Boles, K.S. et al. (2009) Eur. J. Immunol. 39:695.
  2. Yu, X. et al. (2009) Nat. Immunol. 10:48.
  3. Levin, S.D. et al. (2011) Eur. J. Immunol. 41:902.
  4. Xu, Z. et al. (2010) Cell. Mol. Immunol. 7:11.
  5. SwissProt Accession # Q495A1.
  6. Seth, S. et al. (2009) Eur. J. Immunol. 39:3160.
  7. Stanietsky, N. et al. (2009) Proc. Natl. Acad. Sci. USA 106:17858.
  8. Joller, N. et al. (2011) J. Immunol. 83:1338.

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