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1us6

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[[Image:1us6.gif|left|200px]]
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{{STRUCTURE_1us6| PDB=1us6 | SCENE= }}
{{STRUCTURE_1us6| PDB=1us6 | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE QUORUM-SENSING PROTEIN TRAM FROM AGROBACTERIUM TUMEFACIENS AT 1.65 ANG. RESOLUTION'''
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===CRYSTAL STRUCTURE OF THE QUORUM-SENSING PROTEIN TRAM FROM AGROBACTERIUM TUMEFACIENS AT 1.65 ANG. RESOLUTION===
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==Overview==
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Transfer of the tumor-inducing plasmid in Agrobacterium tumefaciens is controlled by a quorum-sensing system whose main components are the transcriptional regulator TraR and its autoinducer. This system allows bacteria to synchronize infection of the host plant when a "quorum" of cells has been reached. TraM is an A. tumefaciens protein involved in the regulation of this system because it binds to TraR and prevents it from binding DNA. As a first step to understanding the molecular basis for the regulation of TraR by TraM, we have determined the crystal structure of TraM at 1.65 A resolution. This protein is packed as a dimer, with each monomer consisting mainly of two antiparallel alpha helices. Monomers are tightly associated, with a large hydrophobic area buried upon dimerization. Secondly, we characterized the TraR-TraM complex in vitro. TraM (11.4 kDa, monomer molecular mass) binds tightly TraR (27 kDa, monomer molecular mass) forming a stable oligomeric complex that likely accounts for two TraR and two TraM dimers.
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(as it appears on PubMed at http://www.pubmed.gov), where 15044488 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15044488}}
==About this Structure==
==About this Structure==
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[[Category: Repressor]]
[[Category: Repressor]]
[[Category: Transcripti regulation]]
[[Category: Transcripti regulation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 11:36:59 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 23:58:29 2008''

Revision as of 20:58, 27 July 2008

Template:STRUCTURE 1us6

CRYSTAL STRUCTURE OF THE QUORUM-SENSING PROTEIN TRAM FROM AGROBACTERIUM TUMEFACIENS AT 1.65 ANG. RESOLUTION

Template:ABSTRACT PUBMED 15044488

About this Structure

1US6 is a Single protein structure of sequence from Agrobacterium tumefaciens. Full crystallographic information is available from OCA.

Reference

Crystal structure of the quorum-sensing protein TraM and its interaction with the transcriptional regulator TraR., Vannini A, Volpari C, Di Marco S, J Biol Chem. 2004 Jun 4;279(23):24291-6. Epub 2004 Mar 24. PMID:15044488

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