View source for 1vj7


==Crystal structure of the bifunctional catalytic fragment of RelSeq, the RelA/SpoT homolog from Streptococcus equisimilis.==
<StructureSection load='1vj7' size='340' side='right'caption='[[1vj7]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1vj7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_dysgalactiae_subsp._equisimilis Streptococcus dysgalactiae subsp. equisimilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1VJ7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1VJ7 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=GPX:GUANOSINE+5-DIPHOSPHATE+2 3-CYCLIC+MONOPHOSPHATE'>GPX</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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=1vj7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1vj7 OCA], [https://pdbe.org/1vj7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1vj7 RCSB], [https://www.ebi.ac.uk/pdbsum/1vj7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1vj7 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RELA_STREQ RELA_STREQ] In eubacteria ppGpp (guanosine 3'-diphosphate 5-' diphosphate) is a mediator of the stringent response that coordinates a variety of cellular activities in response to changes in nutritional abundance. This enzyme catalyzes both the formation of pppGpp which is then hydrolyzed to form ppGpp, and the hydrolysis of ppGpp. The enzyme does not similtaneously display both synthase and hydrolase activities. In the structure of residues 1-385 there are 2 conformations seen, the hydrolase-OFF/synthase-ON and hydrolase-ON/synthase-OFF, suggesting there is ligand-induced signal transmission between the 2 active sites.
== 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/vj/1vj7_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=1vj7 ConSurf].
<div style="clear:both"></div>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Streptococcus dysgalactiae subsp. equisimilis]]
[[Category: Cashel M]]
[[Category: Hilgenfeld R]]
[[Category: Hogg T]]
[[Category: Malke H]]
[[Category: Mechold U]]