1a16: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1a16]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A16 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A16 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1a16]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A16 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A16 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=LEU:LEUCINE'>LEU</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=PRO:PROLINE'>PRO</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Xaa-Pro_aminopeptidase Xaa-Pro aminopeptidase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.11.9 3.4.11.9] </span></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=LEU:LEUCINE'>LEU</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=PRO:PROLINE'>PRO</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=1a16 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a16 OCA], [https://pdbe.org/1a16 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a16 RCSB], [https://www.ebi.ac.uk/pdbsum/1a16 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a16 ProSAT]</span></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=1a16 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a16 OCA], [https://pdbe.org/1a16 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a16 RCSB], [https://www.ebi.ac.uk/pdbsum/1a16 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a16 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/AMPP_ECOLI AMPP_ECOLI]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=1a16 ConSurf].
</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=1a16 ConSurf].
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<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The structure of the proline-specific aminopeptidase (EC 3.4.11.9) from Escherichia coli has been solved and refined for crystals of the native enzyme at a 2.0-A resolution, for a dipeptide-inhibited complex at 2.3-A resolution, and for a low-pH inactive form at 2.7-A resolution. The protein crystallizes as a tetramer, more correctly a dimer of dimers, at both high and low pH, consistent with observations from analytical ultracentrifuge studies that show that the protein is a tetramer under physiological conditions. The monomer folds into two domains. The active site, in the larger C-terminal domain, contains a dinuclear manganese center in which a bridging water molecule or hydroxide ion appears poised to act as the nucleophile in the attack on the scissile peptide bond of Xaa-Pro. The metal-binding residues are located in a single subunit, but the residues surrounding the active site are contributed by three subunits. The fold of the protein resembles that of creatine amidinohydrolase (creatinase, not a metalloenzyme). The C-terminal catalytic domain is also similar to the single-domain enzyme methionine aminopeptidase that has a dinuclear cobalt center.
Structure and mechanism of a proline-specific aminopeptidase from Escherichia coli.,Wilce MC, Bond CS, Dixon NE, Freeman HC, Guss JM, Lilley PE, Wilce JA Proc Natl Acad Sci U S A. 1998 Mar 31;95(7):3472-7. PMID:9520390<ref>PMID:9520390</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1a16" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Aminopeptidase 3D structures|Aminopeptidase 3D structures]]
*[[Aminopeptidase 3D structures|Aminopeptidase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Xaa-Pro aminopeptidase]]
[[Category: Bond CS]]
[[Category: Bond, C S]]
[[Category: Dixon NE]]
[[Category: Dixon, N E]]
[[Category: Freeman HC]]
[[Category: Freeman, H C]]
[[Category: Guss JM]]
[[Category: Guss, J M]]
[[Category: Lilley PE]]
[[Category: Lilley, P E]]
[[Category: Wilce MC]]
[[Category: Wilce, M C]]
[[Category: Hydrolase-hydrolase inhibitor complex]]
[[Category: Proline peptidase-dipeptide inhibitor complex]]

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