1id0: Difference between revisions

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-[[Image:1id0.jpg|left|200px]]
- {{Structure
+==CRYSTAL STRUCTURE OF THE NUCLEOTIDE BOND CONFORMATION OF PHOQ KINASE DOMAIN==
-|PDB= 1id0 |SIZE=350|CAPTION= <scene name='initialview01'>1id0</scene>, resolution 1.60&Aring;
+<StructureSection load='1id0' size='340' side='right'caption='[[1id0]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
-|SITE=
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> and <scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER'>ANP</scene>
+<table><tr><td colspan='2'>[[1id0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ID0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ID0 FirstGlance]. <br>
-|ACTIVITY= [http://en.wikipedia.org/wiki/Non-specific_serine/threonine_protein_kinase Non-specific serine/threonine protein kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1 2.7.11.1]
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.6&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
-}}
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1id0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1id0 OCA], [https://pdbe.org/1id0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1id0 RCSB], [https://www.ebi.ac.uk/pdbsum/1id0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1id0 ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/PHOQ_ECOLI PHOQ_ECOLI] Member of the two-component regulatory system PhoP/PhoQ involved in adaptation to low Mg(2+) environments and the control of acid resistance genes. In low periplasmic Mg(2+), PhoQ functions as a membrane-associated protein kinase that undergoes autophosphorylation and subsequently transfers the phosphate to PhoP, resulting in the expression of PhoP-activated genes (PAG) and repression of PhoP-repressed genes (PRG). In high periplasmic Mg(2+), acts as a protein phosphatase that dephosphorylates phospho-PhoP, resulting in the repression of PAG and may lead to expression of some PRG (By similarity). PhoP-regulated transcription is redox-sensitive, being activated when the periplasm becomes more reducing (deletion of dsbA/dsbB, or treatment with dithiothreitol). MgrB acts between DsbA/DsbB and PhoP/PhoQ in this pathway; the 2 periplasmic Cys residues of MgrB are required for its action on PhoQ, which then acts on PhoP. Mediates magnesium influx to the cytosol by activation of mgtA. Promotes expression of the two-component regulatory system rstA/rstB and transcription of the hemL, mgrB, nagA, slyB, vboR and yrbL genes.<ref>PMID:10464230</ref>
+== 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/id/1id0_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/main_output.php?pdb_ID=1id0 ConSurf].
+<div style="clear:both"></div>
-'''CRYSTAL STRUCTURE OF THE NUCLEOTIDE BOND CONFORMATION OF PHOQ KINASE DOMAIN'''
+==See Also==
+*[[PhoP-PhoQ|PhoP-PhoQ]]
+== References ==
-==Overview==
+<references/>
-PhoQ is a transmembrane histidine kinase belonging to the family of two-component signal transducing systems common in prokaryotes and lower eukaryotes. In response to changes in environmental Mg(2+) concentration, PhoQ regulates the level of phosphorylated PhoP, its cognate transcriptional response-regulator. The PhoQ cytoplasmic region comprises two independently folding domains: the histidine-containing phosphotransfer domain and the ATP-binding kinase domain. We have determined the structure of the kinase domain of Escherichia coli PhoQ complexed with the non-hydrolyzable ATP analog adenosine 5'-(beta,gamma-imino)triphosphate and Mg(2+). Nucleotide binding appears to be accompanied by conformational changes in the loop that surrounds the ATP analog (ATP-lid) and has implications for interactions with the substrate phosphotransfer domain. The high resolution (1.6 A) structure reveals a detailed view of the nucleotide-binding site, allowing us to identify potential catalytic residues. Mutagenic analyses of these residues provide new insights into the catalytic mechanism of histidine phosphorylation in the histidine kinase family. Comparison with the active site of the related GHL ATPase family reveals differences that are proposed to account for the distinct functions of these proteins.
+__TOC__
+</StructureSection>
-==About this Structure==
-ID0 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ID0 OCA].
-==Reference==
-Structural and mutational analysis of the PhoQ histidine kinase catalytic domain. Insight into the reaction mechanism., Marina A, Mott C, Auyzenberg A, Hendrickson WA, Waldburger CD, J Biol Chem. 2001 Nov 2;276(44):41182-90. Epub 2001 Aug 7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11493605 11493605]
 [[Category: Escherichia coli]]
-[[Category: Non-specific serine/threonine protein kinase]]
+[[Category: Large Structures]]
-[[Category: Single protein]]
+[[Category: Auyzenberg A]]
-[[Category: Auyzenberg, A]]
+[[Category: Hendrickson WA]]
-[[Category: Hendrickson, W A.]]
+[[Category: Marina A]]
-[[Category: Marina, A.]]
+[[Category: Mott C]]
-[[Category: Mott, C.]]
+[[Category: Waldburger CD]]
-[[Category: Waldburger, C D.]]
-[[Category: ANP]]
-[[Category: MG]]
-[[Category: histidine kinase]]
-[[Category: phoq/phop]]
-[[Category: signal transduction]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:48:42 2008''