T cell immunoreceptor with Ig and ITIM domains (TIGIT), also called VSIG9 and Vstm3, is a member of the CD28 family within the Ig superfamily of proteins. TIGIT contains an immunoglobulin variable domain, a transmembrane domain and an immunoreceptor tyrosine-based inhibitory motif (ITIM), and is expressed on regulatory, memory, activated T cells and NK cells. TIGIT binds to CD155(PVR) that appear on dendritic cells (DC), macrophages and endothelium with high affinity, and CD112(PVRL2) with lower affinity, but not CD113 (PVRL3). TIGIT-Fc fusion protein could interact with PVR on DC and enhance the secretion of IL-10, but inhibit the macrophage activation. Mice lacking TIGIT show increased T cell responses and susceptibility to autoimmune challenges, while knockdown of TIGIT with siRNA in human memory T cells did not affect T cell responses.
Source |
Human Cells |
Description |
Recombinant Cynomolgus monkey TIGIT is produced by our Mammalian expression system and the target gene encoding Met89-Pro209 is expressed with a 6His tag at the C-terminus.
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Names |
T-cell immunoreceptor with Ig and ITIM domains, VSIG9, VSTM3, TIGIT, V-set and transmembrane domain-containing protein 3, V-set and immunoglobulin domain-containing protein 9
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Accession # |
G7NXM4
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Formulation |
Lyophilized from a 0.2 μm filtered solution of PBS, pH7.4.
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Shipping |
The product is shipped at ambient temperature.
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Reconstitution |
Always centrifuge tubes before opening. Do not mix by vortex or pipetting.
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Storage |
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks.
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Purity |
Greater than 95% as determined by reducing SDS-PAGE.
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Endotoxin |
Less than 0.1 ng/µg (1 IEU/µg) as determined by LAL test.
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Amino Acid Sequence |
MMTGTIETTGNISAKKGGSVILQCHLSSTMAQVTQVNWEQHDHSLLAIRNAELGWHIYPAFKDRV APGPGLGLTLQSLTMNDTGEYFCTYHTYPDGTYRGRIFLEVLESSVAEHSARFQIPHHHHHH
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