View source for 1lok


==The 1.20 Angstrom Resolution Crystal Structure of the Aminopeptidase from Aeromonas proteolytica Complexed with Tris: A Tale of Buffer Inhibition==
<StructureSection load='1lok' size='340' side='right'caption='[[1lok]], [[Resolution|resolution]] 1.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1lok]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_proteolyticus Vibrio proteolyticus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LOK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LOK 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]] 1.2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=SCN:THIOCYANATE+ION'>SCN</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1lok FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lok OCA], [https://pdbe.org/1lok PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lok RCSB], [https://www.ebi.ac.uk/pdbsum/1lok PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lok ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/AMPX_VIBPR AMPX_VIBPR] 
== 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/lo/1lok_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1lok ConSurf].
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== Publication Abstract from PubMed ==
The aminopeptidase from Aeromonas proteolytica (AAP) is a bridged bimetallic enzyme that removes the N-terminal amino acid from a peptide chain. To fully understand the metal roles in the reaction pathway of AAP we have solved the 1.20 A resolution crystal structure of native AAP (PDB ID = 1LOK). The high-quality electron density maps showed a single Tris molecule chelated to the active site Zn(2+), alternate side chain conformations for some side chains, a sodium ion that mediates a crystal contact, a surface thiocyanate ion, and several potential hydrogen atoms. In addition, the high precision of the atomic positions has led to insight into the protonation states of some of the active site amino acid side chains.

The 1.20 A resolution crystal structure of the aminopeptidase from Aeromonas proteolytica complexed with tris: a tale of buffer inhibition.,Desmarais WT, Bienvenue DL, Bzymek KP, Holz RC, Petsko GA, Ringe D Structure. 2002 Aug;10(8):1063-72. PMID:12176384<ref>PMID:12176384</ref>

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

==See Also==
*[[Aminopeptidase 3D structures|Aminopeptidase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Vibrio proteolyticus]]
[[Category: Bienvenue DL]]
[[Category: Bzymek KP]]
[[Category: Desmarais WT]]
[[Category: Holz RC]]
[[Category: Petsko GA]]
[[Category: Ringe D]]