1uth: Difference between revisions

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[[Image:1uth.jpg|left|200px]]
{{Seed}}
[[Image:1uth.png|left|200px]]


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{{STRUCTURE_1uth|  PDB=1uth  |  SCENE=  }}  
{{STRUCTURE_1uth|  PDB=1uth  |  SCENE=  }}  


'''DNTR FROM BURKHOLDERIA SP. STRAIN DNT IN COMPLEX WITH THIOCYANATE'''
===DNTR FROM BURKHOLDERIA SP. STRAIN DNT IN COMPLEX WITH THIOCYANATE===




==Overview==
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The transcriptional regulator DntR, a member of the LysR family, is a central element in a prototype bacterial cell-based biosensor for the detection of hazardous contamination of soil and groundwater by dinitrotoluenes. To optimise the sensitivity of the biosensor for such compounds we have chosen a rational design of the inducer-binding cavity based on knowledge of the three-dimensional structure of DntR. We report two crystal structures of DntR with acetate (resolution 2.6 angstroms) and thiocyanate (resolution 2.3 angstroms), respectively, occupying the inducer-binding cavity. These structures allow for the construction of models of DntR in complex with salicylate (Kd approximately or = 4 microM) and 2,4-dinitrotoluene that provide a basis for the design of mutant DntR with enhanced specificity for dinitrotoluenes. In both crystal structures DntR crystallises as a homodimer with a "head-to-tail" arrangement of monomers in the asymmetric unit. Analysis of the crystal structure has allowed the building of a full-length model of DntR in its biologically active homotetrameric form consisting of two "head-to-head" dimers. The implications of this model for the mechanism of transcription regulation by LysR proteins are discussed.
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{{ABSTRACT_PUBMED_15210343}}


==About this Structure==
==About this Structure==
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[[Category: Lysr]]
[[Category: Lysr]]
[[Category: Transcriptional regulator]]
[[Category: Transcriptional regulator]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 09:48:05 2008''

Revision as of 06:48, 29 July 2008

File:1uth.png

Template:STRUCTURE 1uth

DNTR FROM BURKHOLDERIA SP. STRAIN DNT IN COMPLEX WITH THIOCYANATE

Template:ABSTRACT PUBMED 15210343

About this Structure

1UTH is a Protein complex structure of sequences from Burkholderia sp.. Full crystallographic information is available from OCA.

Reference

Development of a bacterial biosensor for nitrotoluenes: the crystal structure of the transcriptional regulator DntR., Smirnova IA, Dian C, Leonard GA, McSweeney S, Birse D, Brzezinski P, J Mol Biol. 2004 Jul 9;340(3):405-18. PMID:15210343

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