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==Regulating the Escherichia coli ammonia channel: the crystal structure of the AmtB-GlnK complex==
==Regulating the Escherichia coli ammonia channel: the crystal structure of the AmtB-GlnK complex==
<StructureSection load='2nuu' size='340' side='right' caption='[[2nuu]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
<StructureSection load='2nuu' size='340' side='right'caption='[[2nuu]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2nuu]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2NUU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2NUU FirstGlance]. <br>
<table><tr><td colspan='2'>[[2nuu]] is a 12 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=2NUU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2NUU FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">amtB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895]), glnK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2nuu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2nuu OCA], [http://pdbe.org/2nuu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2nuu RCSB], [http://www.ebi.ac.uk/pdbsum/2nuu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2nuu ProSAT]</span></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=2nuu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2nuu OCA], [https://pdbe.org/2nuu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2nuu RCSB], [https://www.ebi.ac.uk/pdbsum/2nuu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2nuu ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/AMTB_ECOLI AMTB_ECOLI]] Involved in the uptake of ammonia. [[http://www.uniprot.org/uniprot/GLNK_ECOLI GLNK_ECOLI]] P-II indirectly controls the transcription of the glutamine synthetase gene (glnA). P-II prevents NR-II-catalyzed conversion of NR-I to NR-I-phosphate, the transcriptional activator of GlnA. When P-II is uridylylated to P-II-UMP, these events are reversed. When the ratio of Gln to 2-ketoglutarate decreases, P-II is uridylylated to P-II-UMP, which causes the deadenylation of glutamine synthetase by GlnE, so activating the enzyme (By similarity).  
[https://www.uniprot.org/uniprot/AMTB_ECOLI AMTB_ECOLI] Involved in the uptake of ammonia.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/nu/2nuu_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/nu/2nuu_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
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</div>
</div>
<div class="pdbe-citations 2nuu" style="background-color:#fffaf0;"></div>
<div class="pdbe-citations 2nuu" style="background-color:#fffaf0;"></div>
==See Also==
*[[Ion channels 3D structures|Ion channels 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bacillus coli migula 1895]]
[[Category: Escherichia coli]]
[[Category: Bullough, P A]]
[[Category: Large Structures]]
[[Category: Conroy, M J]]
[[Category: Bullough PA]]
[[Category: Durand, A]]
[[Category: Conroy MJ]]
[[Category: Li, X D]]
[[Category: Durand A]]
[[Category: Lupo, D]]
[[Category: Li X-D]]
[[Category: Merrick, M]]
[[Category: Lupo D]]
[[Category: Winkler, F K]]
[[Category: Merrick M]]
[[Category: Ammonia transport]]
[[Category: Winkler FK]]
[[Category: Membrane protein complex]]
[[Category: Nitrogen regulation]]
[[Category: Transport protein-signaling protein complex]]

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