2j04: Difference between revisions

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[[Image:2j04.jpg|left|200px]]
{{Seed}}
[[Image:2j04.png|left|200px]]


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{{STRUCTURE_2j04|  PDB=2j04  |  SCENE=  }}  
{{STRUCTURE_2j04|  PDB=2j04  |  SCENE=  }}  


'''THE TAU60-TAU91 SUBCOMPLEX OF YEAST TRANSCRIPTION FACTOR IIIC'''
===THE TAU60-TAU91 SUBCOMPLEX OF YEAST TRANSCRIPTION FACTOR IIIC===




==Overview==
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Yeast RNA polymerase III is recruited upon binding of subcomplexes tauA and tauB of transcription factor IIIC (TFIIIC) to the A and B blocks of tRNA gene promoters. The tauB subcomplex consists of subunits tau60, tau91, and tau138. We determined the 3.2 A crystal structure of tau60 bound to a large C-terminal fragment of tau91 (Deltatau91). Deltatau91 protein contains a seven-bladed propeller preceded by an N-terminal extension, whereas tau60 contains a structurally homologous propeller followed by a C-terminal domain with a novel alpha/beta fold. The two propeller domains do not have any detectable DNA binding activity and mediate heterodimer formation that may serve as scaffold for tau138 assembly. We show that the C-terminal tau60 domain interacts with the TATA binding protein (TBP). Recombinant tauB recruits TBP and stimulates TFIIIB-directed transcription on a TATA box containing tRNA gene, implying a combined contribution of tauA and tauB to preinitiation complex formation.
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{{ABSTRACT_PUBMED_17052456}}


==About this Structure==
==About this Structure==
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[[Category: Type 2 promoter]]
[[Category: Type 2 promoter]]
[[Category: Yeast rna polymerase iii]]
[[Category: Yeast rna polymerase iii]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 08:09:01 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 05:27:39 2008''

Revision as of 02:27, 28 July 2008

File:2j04.png

Template:STRUCTURE 2j04

THE TAU60-TAU91 SUBCOMPLEX OF YEAST TRANSCRIPTION FACTOR IIIC

Template:ABSTRACT PUBMED 17052456

About this Structure

2J04 is a Protein complex structure of sequences from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

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, Muller CW, Mol Cell. 2006 Oct 20;24(2):221-32. PMID:17052456

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