View source for 1qi7


==THE CRYSTAL STRUCTURE AT 2.0 A OF SAPORIN SO6, A RIBOSOME INACTIVATING PROTEIN FROM SAPONARIA OFFICINALIS==
<StructureSection load='1qi7' size='340' side='right'caption='[[1qi7]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1qi7]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saponaria_officinalis Saponaria officinalis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QI7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QI7 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&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=1qi7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qi7 OCA], [https://pdbe.org/1qi7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qi7 RCSB], [https://www.ebi.ac.uk/pdbsum/1qi7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qi7 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RIP6_SAPOF RIP6_SAPOF] Ribosome-inactivating protein of type 1, inhibits protein synthesis in animal cells. Useful as immunotoxin for pharmacological applications.
== 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/qi/1qi7_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=1qi7 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The 2.0 A resolution crystal structure of the ribosome inactivating protein saporin (isoform 6) from seeds of Saponaria officinalis is presented. The fold typical of other plant toxins is conserved, despite some differences in the loop regions. The loop between strands beta7 and beta8 in the C-terminal region which spans over the active site cleft appears shorter in saporin, suggesting an easier access to the substrate. Furthermore we investigated the molecular interaction between saporin and the yeast ribosome by differential chemical modifications. A contact surface inside the C-terminal region of saporin has been identified. Structural comparison between saporin and other ribosome inactivating proteins reveals that this region is conserved and represents a peculiar motif involved in ribosome recognition.

The crystal structure of saporin SO6 from Saponaria officinalis and its interaction with the ribosome.,Savino C, Federici L, Ippoliti R, Lendaro E, Tsernoglou D FEBS Lett. 2000 Mar 31;470(3):239-43. PMID:10745075<ref>PMID:10745075</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1qi7" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Saponaria officinalis]]
[[Category: Federici L]]
[[Category: Ippoliti R]]
[[Category: Lendaro E]]
[[Category: Savino C]]
[[Category: Tsernoglou D]]