2hqn: Difference between revisions

From Proteopedia
Jump to navigationJump to search
← Older editNewer edit →
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,615 edits
m Protected "2hqn" [edit=sysop:move=sysop]
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,615 edits
No edit summary
Line 1: Line 1:
[[Image:2hqn.png|left|200px]]
==Structure of a Atypical Orphan Response Regulator Protein Revealed a New Phosphorylation-Independent Regulatory Mechanism==
<StructureSection load='2hqn' size='340' side='right' caption='[[2hqn]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2hqn]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Helicobacter_pylori Helicobacter pylori]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HQN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2HQN FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2hqo|2hqo]], [[2hqr|2hqr]]</td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2hqn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hqn OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2hqn RCSB], [http://www.ebi.ac.uk/pdbsum/2hqn PDBsum]</span></td></tr>
<table>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hq/2hqn_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Two-component signal transduction systems, commonly found in prokaryotes, typically regulate cellular functions in response to environmental conditions through a phosphorylation-dependent process. A new type of response regulator, hp1043 (HP-RR) from Helicobacter pylori, has been recently identified. HP-RR is essential for cell growth and does not require the well known phosphorelay scheme. Unphosphorylated HP-RR binds specifically to its own promoter (P(1043)) and autoregulates the promoter of the tlpB gene (P(tlpB)). We have determined the structure of HP-RR by NMR and x-ray crystallography, revealing a symmetrical dimer with two functional domains. The molecular topology resembles that of the OmpR/PhoB subfamily, however, the symmetrical dimer is stable even in the unphosphorylated state. The dimer interface, formed by three secondary structure elements (alpha4-beta5-alpha5), resembles that of the active, phosphorylated forms of ArcA and PhoB. Several conserved residues of the HP-RR dimeric interface deviate from the OmpR/PhoB subfamily, although there are similar salt bridges and hydrophobic patches within the interface. Our findings reveal how a new type of response regulator protein could function as a cell growth-associated regulator in the absence of post-translational modification.


{{STRUCTURE_2hqn|  PDB=2hqn  |  SCENE=  }}
Structure of an atypical orphan response regulator protein supports a new phosphorylation-independent regulatory mechanism.,Hong E, Lee HM, Ko H, Kim DU, Jeon BY, Jung J, Shin J, Lee SA, Kim Y, Jeon YH, Cheong C, Cho HS, Lee W J Biol Chem. 2007 Jul 13;282(28):20667-75. Epub 2007 May 9. PMID:17491010<ref>PMID:17491010</ref>


===Structure of a Atypical Orphan Response Regulator Protein Revealed a New Phosphorylation-Independent Regulatory Mechanism===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_17491010}}
== References ==
 
<references/>
==About this Structure==
__TOC__
[[2hqn]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Helicobacter_pylori Helicobacter pylori]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HQN OCA].
</StructureSection>
 
==Reference==
<ref group="xtra">PMID:017491010</ref><references group="xtra"/>
[[Category: Helicobacter pylori]]
[[Category: Helicobacter pylori]]
[[Category: Hong, E.]]
[[Category: Hong, E.]]
Retrieved from "https://proteopedia.org/2hqn"