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TBP is involved in DNA melting (double strand separation) by bending the DNA by 80° (the AT-rich sequence to which it binds facilitates easy melting). The TBP is an unusual protein in that it binds the minor groove using a β sheet. Another distinctive feature of TBP is a long string of glutamines in the N-terminus of the protein.
The TBP-associated factors (TAF) are proteins that associate with the TATA-binding protein in transcription initiation. It is a part of the transcription initiation factor TFIID multimeric protein complex .
TBP binds to the minor groove [15] of the TATA box via a region of antiparallel β sheets in the protein. [16] Three types of molecular interactions contribute to TBP binding to the TATA box: Four phenylalanine residues(Phe57, Phe74, Phe148, Phe165) on TBP bind to DNA and form kinks in the DNA, forcing the DNA minor groove open. [16] [17] [18]
Cro protein complex with DNA Interaction of DNA (orange) with histones (blue). These proteins' basic amino acids bind to the acidic phosphate groups on DNA. The lambda repressor helix-turn-helix transcription factor bound to its DNA target [1] The restriction enzyme EcoRV (green) in a complex with its substrate DNA [2]
The TBPL2 protein is also known as TBP-related factor 3 (TRF3) and TATA binding protein 2 (TBP2). The protein was independently discovered in three laboratories as a vertebrate-specific family member of TATA-binding protein (TBP). [6] [7] [8] Orthologs have been identified in mouse, frog (Xenopus tropicalis) and fish (Danio rerio). Whereas the ...
The B recognition element (BRE) is a DNA sequence found in the promoter region of most [clarification needed] genes in eukaryotes and Archaea. [1] [2] The BRE is a cis-regulatory element that is found immediately near TATA box, and consists of 7 nucleotides.
237336 Ensembl ENSG00000028839 ENSMUSG00000071359 UniProt P62380 Q7Z6T9 P62340 RefSeq (mRNA) NM_004865 NM_001253676 NM_011603 RefSeq (protein) NP_001240605 NP_004856 NP_035733 Location (UCSC) Chr 6: 133.95 – 133.99 Mb Chr 10: 22.58 – 22.61 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse TATA box-binding protein-like protein 1 is a protein that in humans is encoded by the TBPL1 ...
But, the majority of TBP is present in the B-TF II D complex, which is composed of TBP and TAFII170 in a 1:1 ratio. [5] TF II D and B-TF II D are not equivalent, since transcription reactions utilizing TF II D are responsive to gene specific transcription factors such as SP1, while reactions reconstituted with B-TF II D are not.