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1qn4

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[[Image:1qn4.gif|left|200px]]
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{{STRUCTURE_1qn4| PDB=1qn4 | SCENE= }}
{{STRUCTURE_1qn4| PDB=1qn4 | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE T(-24) ADENOVIRUS MAJOR LATE PROMOTER TATA BOX VARIANT BOUND TO WILD-TYPE TBP (ARABIDOPSIS THALIANA TBP ISOFORM 2). TATA ELEMENT RECOGNITION BY THE TATA BOX-BINDING PROTEIN HAS BEEN CONSERVED THROUGHOUT EVOLUTION'''
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===CRYSTAL STRUCTURE OF THE T(-24) ADENOVIRUS MAJOR LATE PROMOTER TATA BOX VARIANT BOUND TO WILD-TYPE TBP (ARABIDOPSIS THALIANA TBP ISOFORM 2). TATA ELEMENT RECOGNITION BY THE TATA BOX-BINDING PROTEIN HAS BEEN CONSERVED THROUGHOUT EVOLUTION===
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==Overview==
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Cocrystal structures of wild-type TATA box-binding protein (TBP) recognizing 10 naturally occurring TATA elements have been determined at 2.3-1.8 A resolution, and compared with our 1.9 A resolution structure of TBP bound to the Adenovirus major late promoter (AdMLP) TATA box (5'-TATAAAAG-3'). Minor-groove recognition by the saddle-shaped protein induces the same conformational change in each of these oligonucleotides, despite variations in promoter sequence that reduce the efficiency of transcription initiation. Three molecular mechanisms explain assembly of diverse TBP-TATA element complexes. (1) T --&gt; A and A --&gt; T transversions leave the minor-groove face unchanged, permitting formation of TBP-DNA complexes on many A/T-rich core promoter sequences. (2) Cavities in the interface between TBP and the minor-groove face of the AdMLP TATA box accommodate the exocyclic NH(2) groups of G in a TACA box and in a TATAAG box. (3) Formation of a C:G Hoogsteen basepair in a TATAAAC box eliminates steric clashes that would be produced by the Watson-Crick base pair. We conclude that the structure of the TBP-TATA box complex found at the heart of the polymerase II (pol II) transcription machinery has remained constant over the course of evolution, despite variations in TBP and its DNA targets.
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{{ABSTRACT_PUBMED_10617571}}
==About this Structure==
==About this Structure==
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[[Category: Yang, S H.]]
[[Category: Yang, S H.]]
[[Category: Tbp-tata element complex]]
[[Category: Tbp-tata element complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:28:19 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 20:45:21 2008''

Revision as of 17:45, 27 July 2008

Image:1qn4.png

Template:STRUCTURE 1qn4

CRYSTAL STRUCTURE OF THE T(-24) ADENOVIRUS MAJOR LATE PROMOTER TATA BOX VARIANT BOUND TO WILD-TYPE TBP (ARABIDOPSIS THALIANA TBP ISOFORM 2). TATA ELEMENT RECOGNITION BY THE TATA BOX-BINDING PROTEIN HAS BEEN CONSERVED THROUGHOUT EVOLUTION

Template:ABSTRACT PUBMED 10617571

About this Structure

1QN4 is a Single protein structure of sequence from Arabidopsis thaliana. Full crystallographic information is available from OCA.

Reference

TATA element recognition by the TATA box-binding protein has been conserved throughout evolution., Patikoglou GA, Kim JL, Sun L, Yang SH, Kodadek T, Burley SK, Genes Dev. 1999 Dec 15;13(24):3217-30. PMID:10617571

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