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Description
Human VISTA, His tagProduct Specification Species Human Synonyms Platelet receptor Gi24, Stress induced secreted protein 1(Sisp 1), V set domain containing immunoregulatory receptor, V set immunoregulatory receptor, C10orf54, SISP1, VISTA Accession Q9H7M9 Amino Acid Sequence Protein sequence (Q9H7M9, Phe33 Ala194, with C 10*His)
Product Specification
| Species | Human |
| Synonyms | Platelet receptor Gi24, Stress-induced secreted protein-1(Sisp-1), V-set domain-containing immunoregulatory receptor, V-set immunoregulatory receptor, C10orf54, SISP1, VISTA |
| Accession | Q9H7M9 |
| Amino Acid Sequence | Protein sequence (Q9H7M9, Phe33-Ala194, with C-10*His) FKVATPYSLYVCPEGQNVTLTCRLLGPVDKGHDVTFYKTWYRSSRGEVQTCSERRPIRNLTFQDLHLHHGGHQAANTSHDLAQRHGLESASDHHGNFSITMRNLTLLDSGLYCCLVVEIRHHHSEHRVHGAMELQVQTGKDAPSNCVVYPSSSQDSENITAAGGGGSHHHHHHHHHH |
| Expression System | HEK293 |
| Molecular Weight | Predicted MW: 19.8 kDa Observed MW: 33-43 kDa |
| Purity | ＞95% by SDS-PAGE |
| Tag | with C-10*His |
| Physical Appearance | Lyophilized Powder |
| Storage Buffer | Lyophilized from a 0.2 μm filtered solution of 0.2M PBS, pH7.4. |
| Reconstitution | Reconstitute no more than 1 mg/mL according to the size in deionized water after rapid centrifugation. |
| Stability & Storage | 12 months from date of receipt, -20 to -70 °C as supplied. 6 months, -20 to -70 °C under sterile conditions after reconstitution. 1 week, 2 to 8 °C under sterile conditions after reconstitution. Please avoid repeated freeze-thaw cycles. |
Background
V-domain Ig suppressor of T cell activation (VISTA) is a type I transmembrane protein. VISTA belongs to the immunoglobulin superfamily and has one IgV domain. VISTA is part of the B7 family, is primarily expressed in white blood cells and its transcription is partially controlled by p53. There is evidence that VISTA can act as both a ligand and a receptor on T cells to inhibit T cell effector function and maintain peripheral tolerance. VISTA is produced at high levels in tumor-infiltrating lymphocytes, such as myeloid-derived suppressor cells and regulatory T cells, and its blockade with an antibody results in delayed tumor growth in mouse models of melanoma and squamous cell carcinoma. Monocytes from HIV-infected patients produce higher levels of VISTA compared to uninfected individuals. There is an ongoing cancer immunotherapy clinical trial for a monoclonal antibody targeting VISTA in advanced cancer. Preliminary results of the phase I clinical trial show good safety tolerance and anti-cancer activity in patients with advanced tumours.
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