1wl6: Difference between revisions

Jump to navigation Jump to search
← Older edit
No edit summary
No edit summary
 
(11 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[Image:1wl6.jpg|left|200px]]


<!--
==Mg-substituted form of E. coli aminopeptidase P==
The line below this paragraph, containing "STRUCTURE_1wl6", creates the "Structure Box" on the page.
<StructureSection load='1wl6' size='340' side='right'caption='[[1wl6]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1wl6]] 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=1WL6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1WL6 FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=XPE:3,6,9,12,15,18,21,24,27-NONAOXANONACOSANE-1,29-DIOL'>XPE</scene></td></tr>
{{STRUCTURE_1wl6|  PDB=1wl6 |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1wl6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1wl6 OCA], [https://pdbe.org/1wl6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1wl6 RCSB], [https://www.ebi.ac.uk/pdbsum/1wl6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1wl6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/AMPP_ECOLI AMPP_ECOLI]
== 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/wl/1wl6_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=1wl6 ConSurf].
<div style="clear:both"></div>


'''Mg-substituted form of E. coli aminopeptidase P'''
==See Also==
 
*[[Aminopeptidase 3D structures|Aminopeptidase 3D structures]]
 
__TOC__
==Overview==
</StructureSection>
The effect of metal substitution on the activity and structure of the aminopeptidase P (APPro) from Escherichia coli has been investigated. Measurements of activity in the presence of Mn2+, Mg2+, Zn2+, Na+, and Ca2+ show that significant activity is seen only in the Mn-bound form of the enzyme. The addition of Zn2+ to [MnMn(APPro)] is strongly inhibitory. Crystal structures of [MnMn(APPro)], [MgMg(APPro)], [ZnZn(APPro)], [ZnMg(APPro)], [Ca_(APPro)], [Na_(APPro)], and [apo(APPro)] were determined. The structures of [Ca_(APPro)] and [Na_(APPro)] have a single metal atom at their active site. Surprisingly, when a tripeptide substrate (ValProLeu) was soaked into [Na_(APPro)] crystals in the presence of 200 mM Mg2+, the structure had substrate, but no metal, bound at the active site. The structure of apo APPro complexed with ValProLeu shows that the N-terminal amino group of a substrate can be bound at the active site by carboxylate side chains that normally bind the second metal atom, providing a model for substrate binding in a single-metal active enzyme. Structures of [MnMn(APPro)] and [ZnZn(APPro)] complexes of ProLeu, a product inhibitor, in the presence of excess Zn reveal a third metal-binding site, formed by two conserved His residues and the dipeptide inhibitor. A Zn atom bound at such a site would stabilize product binding and enhance inhibition.
 
==About this Structure==
1WL6 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WL6 OCA].
 
==Reference==
Structural and functional implications of metal ion selection in aminopeptidase P, a metalloprotease with a dinuclear metal center., Graham SC, Bond CS, Freeman HC, Guss JM, Biochemistry. 2005 Oct 25;44(42):13820-36. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16229471 16229471]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Xaa-Pro aminopeptidase]]
[[Category: Bond CS]]
[[Category: Bond, C S.]]
[[Category: Freeman HC]]
[[Category: Freeman, H C.]]
[[Category: Graham SC]]
[[Category: Graham, S C.]]
[[Category: Guss JM]]
[[Category: Guss, J M.]]
[[Category: Metalloenzyme]]
[[Category: Pita-bread fold]]
[[Category: Proline-specific peptidase]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 13:49:46 2008''

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA
Retrieved from "https://proteopedia.openfox.io/w/1wl6"