TBP (TATA box binding protein) human
SIGMA/SRP2003 - recombinant, expressed in E. coli, ≥85% (SDS-PAGE)
Synonym: GTF2D; GTF2D1; HDL4; MGC117320; TFIID
Product Type: Chemical
Immunoblotting TBP (TATA box binding protein) Cat. No. SRP2003: TBP (TATA box binding protein) was separated on SDS-PAGE using 1-3 μg protein (left); and a protein marker (right).
| assay | ≥85% (SDS-PAGE) |
| biological source | human |
| color | clear colorless |
| concentration | 200 μg/mL |
| form | frozen liquid |
| mol wt | ~39 kDa |
| NCBI accession no. | NM_003194   |
| packaging | pkg of 10 μg |
| recombinant | expressed in E. coli |
| shipped in | dry ice |
| storage condition | avoid repeated freeze/thaw cycles |
| storage temp. | −70°C |
| technique(s) | electrophoretic mobility shift assay: suitable |
| UniProt accession no. | P20226 |
| Biochem/physiol Actions: | TBP (TATA-box binding protein) is essential for the optimal initiation of transcription of ribosomal, messenger, small nuclear, and transfer RNAs by all three eukaryotic RNA polymerases. TBP proteins binds to the TATA consensus sequence (TATAa/tAa/t) with high affinity, through its C-terminal or core region, and identifies minor groove segments and introduces significant DNA deformation. It is a component of the class II initiation factor TFIID, along with TBP-associated factors (TAFIIs), which is crucial for nucleating the assembly of Pol II pre-initiation complex (PIC). PIC is essential for the transcription initiation by RNA polymerase II (Pol II). Amplification of the CAG/CAA trinucleotide repeats in TBP gene results in an autosomal dominant cerebellar ataxia, SCA17 (spinocerebellar ataxia type 17), which is characterized by ataxia, dystonia, parkinsonism, and chorea. |
| Biochem/physiol Actions: | TBP is the core protein of the transcription factor IID complex, the multiprotein DNA-binding factor that coordinates activities necessary for initiation of transcription by RNA polymerase II. |
| Biochem/physiol Actions: | The TATA-binding protein (TBP) is believed to function as an essential factor of the general transcription machinery and to be involved in transcription by all three eukaryotic RNA polymerases (pol I, II, and III). TBP specifically binds to TATA element at the promoter region and interacts with numerous transcription factors, including TBP-associated factors (TAFs), activators, and some tumor suppressor proteins. |
| General description: | TBP (TATA-box binding protein) was originally recognized as a part of the class II initiation factor TFIID. Its C-terminal region is phylogenetically conserved, and is composed of 180-amino acids, containing a highly basic segment, the basic repeat, flanked by two direct repeats. The N-terminal domain of this protein is not conserved across species, and differs in number of residues. TBP gene is localized to human chromosome 6. |
| Physical form: | Clear and colorless frozen liquid solution |
| Preparation Note: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles. While working, please keep sample on ice. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥85% (SDS-PAGE) |
| Storage Temp. | −70°C |
| UNSPSC | 12352202 |