3k1g: Difference between revisions

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-[[Image:3k1g.png|left|200px]]
+==Crystal structure of Dipeptide Epimerase from Enterococcus faecalis V583 complexed with Mg and dipeptide L-Ser-L-Tyr==
+<StructureSection load='3k1g' size='340' side='right' caption='[[3k1g]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[3k1g]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Enterococcus_faecalis_v583 Enterococcus faecalis v583]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3K1G OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3K1G FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SER:SERINE'>SER</scene>, <scene name='pdbligand=TYR:TYROSINE'>TYR</scene><br>
+<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3jva|3jva]]</td></tr>
+<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">EF_1511 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=226185 Enterococcus faecalis V583])</td></tr>
+<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3k1g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3k1g OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3k1g RCSB], [http://www.ebi.ac.uk/pdbsum/3k1g PDBsum]</span></td></tr>
+<table>
+== 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/k1/3k1g_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/chain_selection.php?pdb_ID=2ata ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The rapid advance in genome sequencing presents substantial challenges for protein functional assignment, with half or more of new protein sequences inferred from these genomes having uncertain assignments. The assignment of enzyme function in functionally diverse superfamilies represents a particular challenge, which we address through a combination of computational predictions, enzymology, and structural biology. Here we describe the results of a focused investigation of a group of enzymes in the enolase superfamily that are involved in epimerizing dipeptides. The first members of this group to be functionally characterized were Ala-Glu epimerases in Eschericiha coli and Bacillus subtilis, based on the operon context and enzymological studies; these enzymes are presumed to be involved in peptidoglycan recycling. We have subsequently studied more than 65 related enzymes by computational methods, including homology modeling and metabolite docking, which suggested that many would have divergent specificities;, i.e., they are likely to have different (unknown) biological roles. In addition to the Ala-Phe epimerase specificity reported previously, we describe the prediction and experimental verification of: (i) a new group of presumed Ala-Glu epimerases; (ii) several enzymes with specificity for hydrophobic dipeptides, including one from Cytophaga hutchinsonii that epimerizes D-Ala-D-Ala; and (iii) a small group of enzymes that epimerize cationic dipeptides. Crystal structures for certain of these enzymes further elucidate the structural basis of the specificities. The results highlight the potential of computational methods to guide experimental characterization of enzymes in an automated, large-scale fashion.
-<!--
+Homology models guide discovery of diverse enzyme specificities among dipeptide epimerases in the enolase superfamily.,Lukk T, Sakai A, Kalyanaraman C, Brown SD, Imker HJ, Song L, Fedorov AA, Fedorov EV, Toro R, Hillerich B, Seidel R, Patskovsky Y, Vetting MW, Nair SK, Babbitt PC, Almo SC, Gerlt JA, Jacobson MP Proc Natl Acad Sci U S A. 2012 Mar 13;109(11):4122-7. Epub 2012 Mar 5. PMID:22392983<ref>PMID:22392983</ref>
-The line below this paragraph, containing "STRUCTURE_3k1g", creates the "Structure Box" on the page.
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
-or leave the SCENE parameter empty for the default display.
--->
-{{STRUCTURE_3k1g|  PDB=3k1g  |  SCENE=  }}
-===Crystal structure of Dipeptide Epimerase from Enterococcus faecalis V583 complexed with Mg and dipeptide L-Ser-L-Tyr===
+From MEDLINEÂ®/PubMedÂ®, a database of the U.S. National Library of Medicine.<br>
+</div>
+== References ==
-<!--
+<references/>
-The line below this paragraph, {{ABSTRACT_PUBMED_22392983}}, adds the Publication Abstract to the page
+__TOC__
-(as it appears on PubMed at http://www.pubmed.gov), where 22392983 is the PubMed ID number.
+</StructureSection>
--->
-{{ABSTRACT_PUBMED_22392983}}
-==About this Structure==
-[[3k1g]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Enterococcus_faecalis_v583 Enterococcus faecalis v583]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3K1G OCA].
-==Reference==
-<ref group="xtra">PMID:022392983</ref><references group="xtra"/>
 [[Category: Enterococcus faecalis v583]]
 [[Category: Almo, S C.]]