2jso: Difference between revisions

Revision as of 19:05, 21 February 2008

Antimicrobial resistance protein

OverviewOverview

PmrA/PmrB and PhoP/PhoQ are a pair of two-component systems (TCSs) that allow the Gram-negative bacteria to survive the cationic antimicrobial peptide polymyxin B. The two TCSs are linked by the polymyxin resistance protein, PmrD. The PhoP-activated PmrD protects the phosphorylated response regulator PmrA from dephosphorylation, and promotes the transcription of PmrA-activated genes responsible for polymyxin resistance. PmrD is the first protein identified to mediate the connectivity between two TCSs by protecting the phosphorylated response regulator of the downstream TCS. PmrD shows no homology to proteins with known structures. We present here the solution structure of PmrD from Escherichia coli, the first three-dimensional structure of the PmrD family. Our study provides the structural basis of the novel interacting mechanism of bacterial two-component signal-transduction systems.

About this StructureAbout this Structure

2JSO is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

ReferenceReference

First structure of the polymyxin resistance proteins., Fu W, Yang F, Kang X, Zhang X, Li Y, Xia B, Jin C, Biochem Biophys Res Commun. 2007 Oct 5;361(4):1033-7. Epub 2007 Aug 2. PMID:17686460

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OCA

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 ==Overview==
-PmrA/PmrB and PhoP/PhoQ are a pair of two-component systems (TCSs) that, allow the Gram-negative bacteria to survive the cationic antimicrobial, peptide polymyxin B. The two TCSs are linked by the polymyxin resistance, protein, PmrD. The PhoP-activated PmrD protects the phosphorylated, response regulator PmrA from dephosphorylation, and promotes the, transcription of PmrA-activated genes responsible for polymyxin, resistance. PmrD is the first protein identified to mediate the, connectivity between two TCSs by protecting the phosphorylated response, regulator of the downstream TCS. PmrD shows no homology to proteins with, known structures. We present here the solution structure of PmrD from, Escherichia coli, the first three-dimensional structure of the PmrD, family. Our study provides the structural basis of the novel interacting, mechanism of bacterial two-component signal-transduction systems.
+PmrA/PmrB and PhoP/PhoQ are a pair of two-component systems (TCSs) that allow the Gram-negative bacteria to survive the cationic antimicrobial peptide polymyxin B. The two TCSs are linked by the polymyxin resistance protein, PmrD. The PhoP-activated PmrD protects the phosphorylated response regulator PmrA from dephosphorylation, and promotes the transcription of PmrA-activated genes responsible for polymyxin resistance. PmrD is the first protein identified to mediate the connectivity between two TCSs by protecting the phosphorylated response regulator of the downstream TCS. PmrD shows no homology to proteins with known structures. We present here the solution structure of PmrD from Escherichia coli, the first three-dimensional structure of the PmrD family. Our study provides the structural basis of the novel interacting mechanism of bacterial two-component signal-transduction systems.
 ==About this Structure==
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 [[Category: transcription]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jan 23 13:45:58 2008''
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:05:42 2008''