TBPL1 is a human full-length protein, typically in the 1 to 186 amino acid range. It is expressed in Escherichia coli and has a purity of over 90%, making it suitable for applications such as SDS-PAGE and mass spectrometry . The protein solution often contains 20mM Tris-HCl buffer (pH 8.0), 0.2M NaCl, 50% glycerol, 2mM DTT, and 1mM EDTA .
TBPL1 does not bind to the TATA box, unlike the traditional TATA box-binding protein (TBP). Instead, it is involved in the transcription of genes that do not contain the TATA box. This includes the transcription of ribosomal proteins and possibly the transcription of NF1 . The ability of TBPL1 to mediate transcription without binding to the TATA box highlights its unique role in gene regulation.
Recombinant TBPL1 is used in various research applications, including studies on gene expression and transcriptional regulation. Its high purity and specific expression system make it a valuable tool for scientists studying the mechanisms of transcription and the role of TBPL1 in different cellular processes .