2czr

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{{STRUCTURE_2czr| PDB=2czr | SCENE= }}
{{STRUCTURE_2czr| PDB=2czr | SCENE= }}
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'''Crystal structure of TBP-interacting protein (Tk-TIP26) and implications for its inhibition mechanism of the interaction between TBP and TATA-DNA'''
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===Crystal structure of TBP-interacting protein (Tk-TIP26) and implications for its inhibition mechanism of the interaction between TBP and TATA-DNA===
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==Overview==
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TATA-binding protein (TBP)-interacting protein from the hyperthermophilic archaeon Thermococcus kodakaraensis strain KOD1 (Tk-TIP26) is a possible transcription regulatory protein in Thermococcales. Here, we report the crystal structure of Tk-TIP26 determined at 2.3 A resolution with multiple-wavelength anomalous dispersion (MAD) method. The overall structure of Tk-TIP26 consists of two domains. The N-terminal domain forms an alpha/beta structure, in which three alpha-helices enclose the central beta-sheet. The topology of this domain is similar to that of holliday junction resolvase Hjc from Pyrococcus furiosus. The C-terminal domain comprises three alpha-helices, six beta-strands, and two 3(10)-helices. In the dimer structure of Tk-TIP26, two molecules are related with the crystallographic twofold axis, and these molecules rigidly interact with each other via hydrogen bonds. The complex of Tk-TIP26/Tk-TBP is isolated and analyzed by SDS-PAGE and gel filtration column chromatography, resulting in a stoichiometric ratio of the interaction between Tk-TIP26 and Tk-TBP of 4:2, i.e., two dimer molecules of Tk-TIP26 formed a complex with one dimeric TBP. The electrostatic surfaces of Tk-TIP26 and TBP from Pyrocuccus woesei (PwTBP) allowed us to build a model of the Tk-TIP26/TBP complex, and to propose the inhibition mechanism where two dimer molecules of Tk-TIP26 bind to a dimeric TBP, preventing its binding to TATA-DNA.
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{{ABSTRACT_PUBMED_16322571}}
==About this Structure==
==About this Structure==
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[[Category: Hyperthermophilic archaeon]]
[[Category: Hyperthermophilic archaeon]]
[[Category: Zn-finger motif]]
[[Category: Zn-finger motif]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 19:20:10 2008''

Revision as of 16:20, 28 July 2008

Image:2czr.png

Template:STRUCTURE 2czr

Crystal structure of TBP-interacting protein (Tk-TIP26) and implications for its inhibition mechanism of the interaction between TBP and TATA-DNA

Template:ABSTRACT PUBMED 16322571

About this Structure

2CZR is a Single protein structure of sequence from Thermococcus kodakarensis. Full crystallographic information is available from OCA.

Reference

Crystal structure of TBP-interacting protein (Tk-TIP26) and implications for its inhibition mechanism of the interaction between TBP and TATA-DNA., Yamamoto T, Matsuda T, Inoue T, Matsumura H, Morikawa M, Kanaya S, Kai Y, Protein Sci. 2006 Jan;15(1):152-61. Epub 2005 Dec 1. PMID:16322571

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