TATA-box-binding protein (SPT15), Saccharomyces cerevisiae, recombinant

Organism: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast). Source: E.coli. Expression Region: 2-240aa. Protein Length: Full Length of Mature Protein. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: ADEERLKEFK EANKIVFDPN TRQVWENQNR DGTKPATTFQ SEEDIKRAAP ESEKDTSATS GIVPTLQNIV ATVTLGCRLD LKTVALHARN AEYNPKRFAA VIMRIREPKT TALIFASGKM VVTGAKSEDD SKLASRKYAR IIQKIGFAAK FTDFKIQNIV GSCDVKFPIR LEGLAFSHGT FSSYEPELFP GLIYRMVKPK IVLLIFVSGK IVLTGAKQRE EIYQAFEAIY PVLSEFRKM. Purity: Greater than 90% 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: General transcription factor that functions at the core of the DNA-binding general transcription factor complex TFIID. Binding of TFIID to a promoter (with or without TATA element) is the initial step in preinitiation complex (PIC) formation. TFIID plays a key role in the regulation of gene expression by RNA polymerase II through different activities such as transcription activator interaction, core promoter recognition and selectivity, TFIIA and TFIIB interaction, chromatin modification (histone acetylation by TAF1), facilitation of DNA opening and initiation of transcription. Reference: "Structure of the tau60/Delta tau91 subcomplex of yeast transcription factor IIIC: insights into preinitiation complex assembly."Mylona A., Fernandez-Tornero C., Legrand P., Haupt M., Sentenac A., Acker J., Mueller C.W.Mol. Cell 24:221-232(2006). Function: nan