1lm1: Difference between revisions

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[[Image:1lm1.png|left|200px]]


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==Structural studies on the synchronization of catalytic centers in glutamate synthase: native enzyme==
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<StructureSection load='1lm1' size='340' side='right'caption='[[1lm1]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1lm1]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechocystis_sp._PCC_6803 Synechocystis sp. PCC 6803]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LM1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LM1 FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=F3S:FE3-S4+CLUSTER'>F3S</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene></td></tr>
{{STRUCTURE_1lm1|  PDB=1lm1  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1lm1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lm1 OCA], [https://pdbe.org/1lm1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lm1 RCSB], [https://www.ebi.ac.uk/pdbsum/1lm1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lm1 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/GLTS_SYNY3 GLTS_SYNY3]
== 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/lm/1lm1_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=1lm1 ConSurf].
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<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The complex iron-sulfur flavoprotein glutamate synthase (GltS) plays a prominent role in ammonia assimilation in bacteria, yeasts, and plants. GltS catalyzes the formation of two molecules of l-glutamate from 2-oxoglutarate and l-glutamine via intramolecular channeling of ammonia. GltS has the impressive ability of synchronizing its distinct catalytic centers to avoid wasteful consumption of l-glutamine. We have determined the crystal structure of the ferredoxin-dependent GltS in several ligation and redox states. The structures reveal the crucial elements in the synchronization between the glutaminase site and the 2-iminoglutarate reduction site. The structural data combined with the catalytic properties of GltS indicate that binding of ferredoxin and 2-oxoglutarate to the FMN-binding domain of GltS induce a conformational change in the loop connecting the two catalytic centers. The rearrangement induces a shift in the catalytic elements of the amidotransferase domain, such that it becomes activated. This machinery, over a distance of more than 30 A, controls the ability of the enzyme to bind and hydrolyze the ammonia-donating substrate l-glutamine.


===Structural studies on the synchronization of catalytic centers in glutamate synthase: native enzyme===
Structural studies on the synchronization of catalytic centers in glutamate synthase.,van den Heuvel RH, Ferrari D, Bossi RT, Ravasio S, Curti B, Vanoni MA, Florencio FJ, Mattevi A J Biol Chem. 2002 Jul 5;277(27):24579-83. Epub 2002 Apr 19. PMID:11967268<ref>PMID:11967268</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1lm1" style="background-color:#fffaf0;"></div>


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==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_11967268}}, adds the Publication Abstract to the page
*[[Glutamate synthase|Glutamate synthase]]
(as it appears on PubMed at http://www.pubmed.gov), where 11967268 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_11967268}}
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</StructureSection>
==About this Structure==
[[Category: Large Structures]]
1LM1 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LM1 OCA].
[[Category: Synechocystis sp. PCC 6803]]
 
[[Category: Bossi RT]]
==Reference==
[[Category: Curti B]]
Structural studies on the synchronization of catalytic centers in glutamate synthase., van den Heuvel RH, Ferrari D, Bossi RT, Ravasio S, Curti B, Vanoni MA, Florencio FJ, Mattevi A, J Biol Chem. 2002 Jul 5;277(27):24579-83. Epub 2002 Apr 19. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11967268 11967268]
[[Category: Ferrari D]]
[[Category: Single protein]]
[[Category: Florencio FJ]]
[[Category: Synechocystis sp.]]
[[Category: Mattevi A]]
[[Category: Bossi, R T.]]
[[Category: Ravasio S]]
[[Category: Curti, B.]]
[[Category: Vanoni MA]]
[[Category: Ferrari, D.]]
[[Category: Van Den Heuvel RH]]
[[Category: Florencio, F J.]]
[[Category: Heuvel, R H.van Den.]]
[[Category: Mattevi, A.]]
[[Category: Ravasio, S.]]
[[Category: Vanoni, M A.]]
[[Category: Amidotransferase]]
[[Category: Channeling]]
[[Category: Glutamate synthase]]
 
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