3h5r: Difference between revisions

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-[[Image:3h5r.png|left|200px]]
+==Crystal structure of E. coli MccB + Succinimide==
+<StructureSection load='3h5r' size='340' side='right' caption='[[3h5r]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[3h5r]] is a 8 chain structure with 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=3H5R OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3H5R FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene><br>
+<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SNN:L-3-AMINOSUCCINIMIDE'>SNN</scene></td></tr>
+<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3h5a|3h5a]], [[3h5n|3h5n]], [[3h9g|3h9g]], [[3h9j|3h9j]], [[3h9q|3h9q]]</td></tr>
+<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">mccB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</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=3h5r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3h5r OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3h5r RCSB], [http://www.ebi.ac.uk/pdbsum/3h5r 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/h5/3h5r_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 39-kDa Escherichia coli enzyme MccB catalyses a remarkable posttranslational modification of the MccA heptapeptide during the biosynthesis of microcin C7 (MccC7), a 'Trojan horse' antibiotic. The approximately 260-residue C-terminal region of MccB is homologous to ubiquitin-like protein (UBL) activating enzyme (E1) adenylation domains. Accordingly, MccB-catalysed C-terminal MccA-acyl-adenylation is reminiscent of the E1-catalysed activation reaction. However, unlike E1 substrates, which are UBLs with a C-terminal di-glycine sequence, MccB's substrate, MccA, is a short peptide with an essential C-terminal Asn. Furthermore, after an intramolecular rearrangement of MccA-acyl-adenylate, MccB catalyses a second, unique reaction, producing a stable phosphoramidate-linked analogue of acyl-adenylated aspartic acid. We report six-crystal structures of MccB in apo, substrate-, intermediate-, and inhibitor-bound forms. Structural and kinetic analyses reveal a novel-peptide clamping mechanism for MccB binding to heptapeptide substrates and a dynamic-active site for catalysing dual adenosine triphosphate-consuming reactions. The results provide insight into how a distinctive member of the E1 superfamily carries out two-step activation for generating the peptidyl-antibiotic MccC7.
-<!--
+How the MccB bacterial ancestor of ubiquitin E1 initiates biosynthesis of the microcin C7 antibiotic.,Regni CA, Roush RF, Miller DJ, Nourse A, Walsh CT, Schulman BA EMBO J. 2009 Jul 8;28(13):1953-64. Epub 2009 Jun 4. PMID:19494832<ref>PMID:19494832</ref>
-The line below this paragraph, containing "STRUCTURE_3h5r", 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_3h5r|  PDB=3h5r  |  SCENE=  }}
-===Crystal structure of E. coli MccB + Succinimide===
+From MEDLINEÂ®/PubMedÂ®, a database of the U.S. National Library of Medicine.<br>
+</div>
+== References ==
-<!--
+<references/>
-The line below this paragraph, {{ABSTRACT_PUBMED_19494832}}, adds the Publication Abstract to the page
+__TOC__
-(as it appears on PubMed at http://www.pubmed.gov), where 19494832 is the PubMed ID number.
+</StructureSection>
--->
-{{ABSTRACT_PUBMED_19494832}}
-==About this Structure==
-[[3h5r]] is a 8 chain structure with 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=3H5R OCA].
-==Reference==
-<ref group="xtra">PMID:019494832</ref><references group="xtra"/>
 [[Category: Escherichia coli]]
 [[Category: Miller, D.]]