3kqa

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
m (Protected "3kqa" [edit=sysop:move=sysop])
Current revision (05:56, 17 October 2024) (edit) (undo)
 
(5 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:3kqa.png|left|200px]]
 
-
<!--
+
==MurA dead-end complex with terreic acid==
-
The line below this paragraph, containing "STRUCTURE_3kqa", creates the "Structure Box" on the page.
+
<StructureSection load='3kqa' size='340' side='right'caption='[[3kqa]], [[Resolution|resolution]] 2.25&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'>[[3kqa]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Enterobacter_cloacae Enterobacter cloacae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KQA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3KQA 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]] 2.25&#8491;</td></tr>
-
-->
+
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=IAS:BETA-L-ASPARTIC+ACID'>IAS</scene>, <scene name='pdbligand=TR9:(5S)-2,5-DIHYDROXY-3-METHYLCYCLOHEX-2-ENE-1,4-DIONE'>TR9</scene></td></tr>
-
{{STRUCTURE_3kqa| PDB=3kqa | SCENE= }}
+
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3kqa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kqa OCA], [https://pdbe.org/3kqa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3kqa RCSB], [https://www.ebi.ac.uk/pdbsum/3kqa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3kqa ProSAT]</span></td></tr>
 +
</table>
 +
== Function ==
 +
[https://www.uniprot.org/uniprot/MURA_ENTCC MURA_ENTCC] Cell wall formation. Adds enolpyruvyl to UDP-N-acetylglucosamine. Target for the antibiotic phosphomycin.
 +
== 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/kq/3kqa_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=3kqa ConSurf].
 +
<div style="clear:both"></div>
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
Terreic acid is a metabolite with antibiotic properties produced by the fungus Aspergillus terreus. We found that terreic acid is a covalent inhibitor of the bacterial cell wall biosynthetic enzyme MurA from Enterobacter cloacae and Escherichia coli in vitro. The crystal structure of the MurA dead-end complex with terreic acid revealed that the quinine ring is covalently attached to the thiol group of Cys115, the molecular target of the antibiotic fosfomycin. Kinetic characterization established that the inactivation requires the presence of substrate UNAG (UDP-N-acetylglucosamine), proceeding with an inactivation rate constant k(inact) of 130 M(-1) s(-1). Although the mechanisms of inactivation are similar, fosfomycin is approximately 50 times more potent than terreic acid, and the structural consequences of covalent modification by these two inhibitors are fundamentally different. The MurA-fosfomycin complex exists in the closed enzyme conformation, with the Cys115-fosfomycin adduct buried in the active site. In contrast, the dead-end complex with terreic acid is open, is free of UNAG, and has the Cys115-terreic acid adduct solvent-exposed. It appears that terreic acid reacts with Cys115 in the closed, binary state of the enzyme, but that the resulting Cys115-terreic acid adduct imposes steric clashes in the active site. As a consequence, the loop containing Cys115 rearranges, the enzyme opens, and UNAG is released. The differential kinetic and structural characteristics of MurA inactivation by terreic acid and fosfomycin reflect the importance of noncovalent binding potential, even for covalent inhibitors, in ensuring inactivation efficiency and specificity.
-
===MurA dead-end complex with terreic acid===
+
The Fungal Product Terreic Acid Is a Covalent Inhibitor of the Bacterial Cell Wall Biosynthetic Enzyme UDP-N-Acetylglucosamine 1-Carboxyvinyltransferase (MurA) .,Han H, Yang Y, Olesen SH, Becker A, Betzi S, Schonbrunn E Biochemistry. 2010 Apr 21. PMID:20392080<ref>PMID:20392080</ref>
 +
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 +
</div>
 +
<div class="pdbe-citations 3kqa" style="background-color:#fffaf0;"></div>
-
<!--
+
==See Also==
-
The line below this paragraph, {{ABSTRACT_PUBMED_20392080}}, adds the Publication Abstract to the page
+
*[[Enoylpyruvate transferase 3D structures|Enoylpyruvate transferase 3D structures]]
-
(as it appears on PubMed at http://www.pubmed.gov), where 20392080 is the PubMed ID number.
+
== References ==
-
-->
+
<references/>
-
{{ABSTRACT_PUBMED_20392080}}
+
__TOC__
-
 
+
</StructureSection>
-
==About this Structure==
+
-
[[3kqa]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Enterobacter_cloacae Enterobacter cloacae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KQA OCA].
+
-
 
+
-
==Reference==
+
-
<ref group="xtra">PMID:020392080</ref><references group="xtra"/>
+
[[Category: Enterobacter cloacae]]
[[Category: Enterobacter cloacae]]
-
[[Category: UDP-N-acetylglucosamine 1-carboxyvinyltransferase]]
+
[[Category: Large Structures]]
-
[[Category: Schonbrunn, E.]]
+
[[Category: Schonbrunn E]]
-
[[Category: Cell cycle]]
+
-
[[Category: Cell division]]
+
-
[[Category: Cell shape]]
+
-
[[Category: Cell wall biogenesis/degradation]]
+
-
[[Category: Inside-out alpha/beta barrel]]
+
-
[[Category: Open enzyme state]]
+
-
[[Category: Peptidoglycan synthesis]]
+
-
[[Category: Transferase]]
+
-
[[Category: Transferase-transferase inhibitor complex]]
+

Current revision

MurA dead-end complex with terreic acid

PDB ID 3kqa

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3kqa"
Personal tools