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[[Image:1e5t.jpg|left|200px]]
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{{STRUCTURE_1e5t|  PDB=1e5t  |  SCENE=  }}
'''PROLYL OLIGOPEPTIDASE FROM PORCINE BRAIN, MUTANT'''


==PROLYL OLIGOPEPTIDASE FROM PORCINE BRAIN, MUTANT==
<StructureSection load='1e5t' size='340' side='right'caption='[[1e5t]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1e5t]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E5T OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1E5T 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]] 1.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</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=1e5t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e5t OCA], [https://pdbe.org/1e5t PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1e5t RCSB], [https://www.ebi.ac.uk/pdbsum/1e5t PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1e5t ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PPCE_PIG PPCE_PIG] Cleaves peptide bonds on the C-terminal side of prolyl residues within peptides that are up to approximately 30 amino acids long.
== 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/e5/1e5t_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=1e5t ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Proteases have a variety of strategies for selecting substrates in order to prevent uncontrolled protein degradation. A recent crystal structure determination of prolyl oligopeptidase has suggested a way for substrate selection involving an unclosed seven-bladed beta-propeller domain. We have engineered a disulfide bond between the first and seventh blades of the propeller, which resulted in the loss of enzymatic activity. These results provided direct evidence for a novel strategy of regulation in which oscillating propeller blades act as a gating filter during catalysis, letting small peptide substrates into the active site while excluding large proteins to prevent accidental proteolysis.


==Overview==
Catalysis of serine oligopeptidases is controlled by a gating filter mechanism.,Fulop V, Szeltner Z, Polgar L EMBO Rep. 2000 Sep;1(3):277-81. PMID:11256612<ref>PMID:11256612</ref>
Proteases have a variety of strategies for selecting substrates in order to prevent uncontrolled protein degradation. A recent crystal structure determination of prolyl oligopeptidase has suggested a way for substrate selection involving an unclosed seven-bladed beta-propeller domain. We have engineered a disulfide bond between the first and seventh blades of the propeller, which resulted in the loss of enzymatic activity. These results provided direct evidence for a novel strategy of regulation in which oscillating propeller blades act as a gating filter during catalysis, letting small peptide substrates into the active site while excluding large proteins to prevent accidental proteolysis.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1E5T is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E5T OCA].
</div>
<div class="pdbe-citations 1e5t" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Catalysis of serine oligopeptidases is controlled by a gating filter mechanism., Fulop V, Szeltner Z, Polgar L, EMBO Rep. 2000 Sep;1(3):277-81. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11256612 11256612]
*[[Prolyl Endopeptidase|Prolyl Endopeptidase]]
[[Category: Prolyl oligopeptidase]]
== References ==
[[Category: Single protein]]
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Sus scrofa]]
[[Category: Sus scrofa]]
[[Category: Fulop, V.]]
[[Category: Fulop V]]
[[Category: Alpha/ beta-hydrolase]]
[[Category: Amnesia]]
[[Category: Beta-propeller]]
[[Category: Hydrolase]]
[[Category: Prolyl oligopeptidase]]
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