Transcription factor 7 (TCF7), human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 1-384aa. Protein Length: Full Length. Tag Info: N-terminal 10xHis-tagged and C-terminal Myc-tagged. Target Protein Sequence: MPQLDSGGGG AGGGDDLGAP DELLAFQDEG EEQDDKSRDS AAGPERDLAE LKSSLVNESE GAAGGAGIPG VPGAGAGARG EAEALGREHA AQRLFPDKLP EPLEDGLKAP ECTSGMYKET VYSAFNLLMH YPPPSGAGQH PQPQPPLHKA NQPPHGVPQL SLYEHFNSPH PTPAPADISQ KQVHRPLQTP DLSGFYSLTS GSMGQLPHTV SWFTHPSLML GSGVPGHPAA IPHPAIVPPS GKQELQPFDR NLKTQAESKA EKEAKKPTIK KPLNAFMLYM KEMRAKVIAE CTLKESAAIN QILGRRWHAL SREEQAKYYE LARKERQLHM QLYPGWSARD NYGKKKRRSR EKHQESTTET NWPRELKDGN GQESLSMSSS SSPA. Purity: Greater than 85% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20 °C/-80 °C. The shelf life of lyophilized form is 12 months at -20 °C/-80 °C. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: Transcriptional activator involved in T-cell lymphocyte differentiation. Necessary for the survival of CD4(+) CD8(+) immature thymocytes. Isoforms lacking the N-terminal CTNNB1 binding domain cannot fulfill this role. Binds to the T-lymphocyte-specific enhancer element (5'-WWCAAAG-3') found in the promoter of the CD3E gene. Represses expression of the T-cell receptor gamma gene in alpha-beta T-cell lineages. Required for the development of natural killer receptor-positive lymphoid tissue inducer T-cells. TLE1, TLE2, TLE3 and TLE4 repress transactivation mediated by TCF7 and CTNNB1.May also act as feedback transcriptional repressor of CTNNB1 and TCF7L2 target genes. Reference: "AF1q is a novel TCF7 co-factor which activates CD44 and promotes breast cancer metastasis." Park J., Schlederer M., Schreiber M., Ice R., Merkel O., Bilban M., Hofbauer S., Kim S., Addison J., Zou J., Ji C., Bunting S.T., Wang Z., Shoham M., Huang G., Bago-Horvath Z., Gibson L.F., Rojanasakul Y. Tse W. Oncotarget 6:20697-20710(2015). Function: nan