2au3

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[[Image:2au3.png|left|200px]]
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==Crystal Structure of the Aquifex aeolicus primase (Zinc Binding and RNA Polymerase Domains)==
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<StructureSection load='2au3' size='340' side='right' caption='[[2au3]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2au3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aquifex_aeolicus Aquifex aeolicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AU3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2AU3 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene><br>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dnaG ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=63363 Aquifex aeolicus])</td></tr>
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<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=2au3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2au3 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2au3 RCSB], [http://www.ebi.ac.uk/pdbsum/2au3 PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/au/2au3_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The coordination of primase function within the replisome is an essential but poorly understood feature of lagging strand synthesis. By using crystallography and small-angle X-ray scattering (SAXS), we show that functional elements of bacterial primase transition between two dominant conformations: an extended form that uncouples a regulatory domain from its associated RNA polymerase core and a compact state that sequesters the regulatory region from the site of primer synthesis. FRET studies and priming assays reveal that the regulatory domain of one primase subunit productively associates with nucleic acid that is bound to the polymerase domain of a second protomer in trans. This intersubunit interaction allows primase to select initiation sites on template DNA and implicates the regulatory domain as a "molecular brake" that restricts primer length. Our data suggest that the replisome may cooperatively use multiple primases and this conformational switch to control initiation frequency, processivity, and ultimately, Okazaki fragment synthesis.
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{{STRUCTURE_2au3| PDB=2au3 | SCENE= }}
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Crosstalk between primase subunits can act to regulate primer synthesis in trans.,Corn JE, Pease PJ, Hura GL, Berger JM Mol Cell. 2005 Nov 11;20(3):391-401. PMID:16285921<ref>PMID:16285921</ref>
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===Crystal Structure of the Aquifex aeolicus primase (Zinc Binding and RNA Polymerase Domains)===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_16285921}}
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==About this Structure==
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[[2au3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aquifex_aeolicus Aquifex aeolicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AU3 OCA].
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==See Also==
==See Also==
*[[RNA polymerase|RNA polymerase]]
*[[RNA polymerase|RNA polymerase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:016285921</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Aquifex aeolicus]]
[[Category: Aquifex aeolicus]]
[[Category: Berger, J M.]]
[[Category: Berger, J M.]]

Revision as of 02:25, 29 September 2014

Crystal Structure of the Aquifex aeolicus primase (Zinc Binding and RNA Polymerase Domains)

2au3, resolution 2.00Å

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