2gj3: Difference between revisions

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<StructureSection load='2gj3' size='340' side='right'caption='[[2gj3]], [[Resolution|resolution]] 1.04&Aring;' scene=''>
<StructureSection load='2gj3' size='340' side='right'caption='[[2gj3]], [[Resolution|resolution]] 1.04&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2gj3]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_478 Atcc 478]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GJ3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GJ3 FirstGlance]. <br>
<table><tr><td colspan='2'>[[2gj3]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Azotobacter_vinelandii Azotobacter vinelandii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GJ3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GJ3 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 1.04&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">nifL ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=354 ATCC 478])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Histidine_kinase Histidine kinase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.13.3 2.7.13.3] </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=2gj3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gj3 OCA], [https://pdbe.org/2gj3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gj3 RCSB], [https://www.ebi.ac.uk/pdbsum/2gj3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gj3 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=2gj3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gj3 OCA], [https://pdbe.org/2gj3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gj3 RCSB], [https://www.ebi.ac.uk/pdbsum/2gj3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gj3 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/NIFL_AZOVI NIFL_AZOVI]] Required for the inhibition of NifA activity in response to oxygen and low level of fixed nitrogen.  
[https://www.uniprot.org/uniprot/NIFL_AZOVI NIFL_AZOVI] Required for the inhibition of NifA activity in response to oxygen and low level of fixed nitrogen.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=2gj3 ConSurf].
</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=2gj3 ConSurf].
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== Publication Abstract from PubMed ==
NifL is a multidomain sensor protein responsible for the transcriptional regulation of genes involved in response to changes in cellular redox state and ADP concentration. Cellular redox is monitored by the N-terminal PAS domain of NifL which contains an FAD cofactor. Flavin-based PAS domains of this type have also been referred to as LOV domains. To explore the mechanism of signal recognition and transduction in NifL, we determined the crystal structure of the FAD-bound PAS domain of NifL from Azotobacter vinelandii to 1.04 A resolution. The structure reveals a novel cavity within the PAS domain which contains two water molecules directly coordinated to the FAD. This cavity is connected to solvent by multiple access channels which may facilitate the oxidation of the FAD by molecular oxygen and the release of hydrogen peroxide. The structure contains a dimer of the NifL PAS domain that is structurally very similar to those described in other crystal structures of PAS domains and identifies a conserved dimerization motif. An N-terminal amphipathic helix constitutes part of the dimerization interface, and similar N-terminal helices are identified in other PAS domain proteins. The structure suggests a model for redox-mediated signaling in which a conformational change is initiated by redox-dependent changes in protonation at the N5 atom of FAD that lead to reorganization of hydrogen bonds within the flavin binding pocket. A structural signal is subsequently transmitted to the beta-sheet interface between the monomers of the PAS domain.
Structure of the redox sensor domain of Azotobacter vinelandii NifL at atomic resolution: signaling, dimerization, and mechanism.,Key J, Hefti M, Purcell EB, Moffat K Biochemistry. 2007 Mar 27;46(12):3614-23. Epub 2007 Feb 24. PMID:17319691<ref>PMID:17319691</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2gj3" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Atcc 478]]
[[Category: Azotobacter vinelandii]]
[[Category: Histidine kinase]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Hefti, M]]
[[Category: Hefti M]]
[[Category: Key, J]]
[[Category: Key J]]
[[Category: Moffat, K]]
[[Category: Moffat K]]
[[Category: Purcell, E]]
[[Category: Purcell E]]
[[Category: Atomic resolution]]
[[Category: Fad]]
[[Category: Pas domain]]
[[Category: Redox sensor]]
[[Category: Transferase]]

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