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[[Image:1dpi.gif|left|200px]]<br /><applet load="1dpi" size="350" color="white" frame="true" align="right" spinBox="true"
caption="1dpi, resolution 2.8&Aring;" />
'''STRUCTURE OF LARGE FRAGMENT OF ESCHERICHIA COLI DNA POLYMERASE I COMPLEXED WITH D/TMP'''<br />


==Overview==
==STRUCTURE OF LARGE FRAGMENT OF ESCHERICHIA COLI DNA POLYMERASE I COMPLEXED WITH D/TMP==
The 3.3-A resolution crystal structure of the large proteolytic fragment of Escherichia coli DNA polymerase I complexed with deoxythymidine monophosphate consists of two domains, the smaller of which binds zinc-deoxythymidine monophosphate. The most striking feature of the larger domain is a deep crevice of the appropriate size and shape for binding double-stranded B-DNA. A flexible subdomain may allow the enzyme to surround completely the DNA substrate, thereby allowing processive nucleotide polymerization without enzyme dissociation.
<StructureSection load='1dpi' size='340' side='right'caption='[[1dpi]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1dpi]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DPI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DPI FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1dpi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dpi OCA], [https://pdbe.org/1dpi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dpi RCSB], [https://www.ebi.ac.uk/pdbsum/1dpi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dpi ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DPO1_ECOLI DPO1_ECOLI] In addition to polymerase activity, this DNA polymerase exhibits 3' to 5' and 5' to 3' exonuclease activity. It is able to utilize nicked circular duplex DNA as a template and can unwind the parental DNA strand from its template.
== 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/dp/1dpi_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/main_output.php?pdb_ID=1dpi ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1DPI is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=ZN:'>ZN</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.7 2.7.7.7] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DPI OCA].
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
Structure of large fragment of Escherichia coli DNA polymerase I complexed with dTMP., Ollis DL, Brick P, Hamlin R, Xuong NG, Steitz TA, Nature. 1985 Feb 28-Mar 6;313(6005):762-6. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=3883192 3883192]
[[Category: DNA-directed DNA polymerase]]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Beese, L.]]
[[Category: Beese L]]
[[Category: Ollis, D.]]
[[Category: Ollis D]]
[[Category: Steitz, T.]]
[[Category: Steitz T]]
[[Category: ZN]]
[[Category: nucleotidyltransferase]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:19:05 2008''

Latest revision as of 06:57, 7 February 2024

STRUCTURE OF LARGE FRAGMENT OF ESCHERICHIA COLI DNA POLYMERASE I COMPLEXED WITH D/TMP

1dpi, resolution 2.80Å

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