2fhx: Difference between revisions

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-{{Seed}}
-[[Image:2fhx.png|left|200px]]
-<!--
+==Pseudomonas aeruginosa SPM-1 metallo-beta-lactamase==
-The line below this paragraph, containing "STRUCTURE_2fhx", creates the "Structure Box" on the page.
+<StructureSection load='2fhx' size='340' side='right'caption='[[2fhx]], [[Resolution|resolution]] 1.90&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'>[[2fhx]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FHX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FHX 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]] 1.9&#8491;</td></tr>
--->
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AZI:AZIDE+ION'>AZI</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CSD:3-SULFINOALANINE'>CSD</scene>, <scene name='pdbligand=CSO:S-HYDROXYCYSTEINE'>CSO</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
-{{STRUCTURE_2fhx|  PDB=2fhx  |  SCENE=  }}
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2fhx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fhx OCA], [https://pdbe.org/2fhx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fhx RCSB], [https://www.ebi.ac.uk/pdbsum/2fhx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fhx ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/Q8G9Q0_PSEAI Q8G9Q0_PSEAI]
+== 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/fh/2fhx_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=2fhx ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Metallo-beta-lactamases (mbetals) confer broad-spectrum resistance to beta-lactam antibiotics upon host bacteria and escape the action of existing beta-lactamase inhibitors. SPM-1 is a recently discovered mbetal that is distinguished from related enzymes by possession of a substantial central insertion and by sequence variation at positions that maintain active site structure. Biochemical data show SPM-1 to contain two Zn2+ sites of differing affinities, a phenomenon that is well documented amongst mbetals but for which a structural explanation has proved elusive. Here, we report the crystal structure of SPM-1 to 1.9 A resolution. The structure reveals SPM-1 to lack a mobile loop implicated in substrate binding by related mbetals and to accommodate the central insertion in an extended helical interdomain region. Deleting this had marginal effect upon binding and hydrolysis of a range of beta-lactams. These data suggest that the interactions of SPM-1 with substrates differ from those employed by other mbetals. SPM-1 as crystallised contains a single Zn2+. Both the active site hydrogen-bonding network and main-chain geometry at Asp120, a key component of the binding site for the second zinc ion, differ significantly from previous mbetal structures. We propose that variable interactions made by the Asp120 carbonyl group modulate affinity for a second Zn2+ equivalent in mbetals of the B1 subfamily. We further predict that SPM-1 possesses the capacity to evolve variants of enhanced catalytic activity by point mutations altering geometry and hydrogen bonding in the vicinity of the second Zn2+ site.
-===Pseudomonas aeruginosa SPM-1 metallo-beta-lactamase===
+Crystal structure of Pseudomonas aeruginosa SPM-1 provides insights into variable zinc affinity of metallo-beta-lactamases.,Murphy TA, Catto LE, Halford SE, Hadfield AT, Minor W, Walsh TR, Spencer J J Mol Biol. 2006 Mar 31;357(3):890-903. Epub 2006 Jan 23. PMID:16460758<ref>PMID:16460758</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
+<div class="pdbe-citations 2fhx" style="background-color:#fffaf0;"></div>
-<!--
+==See Also==
-The line below this paragraph, {{ABSTRACT_PUBMED_16460758}}, adds the Publication Abstract to the page
+*[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]]
-(as it appears on PubMed at http://www.pubmed.gov), where 16460758 is the PubMed ID number.
+== References ==
--->
+<references/>
-{{ABSTRACT_PUBMED_16460758}}
+__TOC__
+</StructureSection>
-==About this Structure==
+[[Category: Large Structures]]
-FHX is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FHX OCA].
-==Reference==
-Crystal structure of Pseudomonas aeruginosa SPM-1 provides insights into variable zinc affinity of metallo-beta-lactamases., Murphy TA, Catto LE, Halford SE, Hadfield AT, Minor W, Walsh TR, Spencer J, J Mol Biol. 2006 Mar 31;357(3):890-903. Epub 2006 Jan 23. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16460758 16460758]
-[[Category: Beta-lactamase]]
-[[Category: Protein complex]]
 [[Category: Pseudomonas aeruginosa]]
-[[Category: Catto, L E.]]
+[[Category: Catto LE]]
-[[Category: Hadfield, A T.]]
+[[Category: Hadfield AT]]
-[[Category: Halford, S E.]]
+[[Category: Halford SE]]
-[[Category: Minor, W.]]
+[[Category: Minor W]]
-[[Category: Murphy, T A.]]
+[[Category: Murphy TA]]
-[[Category: Spencer, J.]]
+[[Category: Spencer J]]
-[[Category: Walsh, T R.]]
+[[Category: Walsh TR]]
-[[Category: Antibiotic resistance]]
-[[Category: Dinuclear zinc]]
-[[Category: Hydrolase]]
-[[Category: Metallo-beta-lactamase]]
-[[Category: Structure]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 19:30:33 2008''