4ou6: Difference between revisions
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==Crystal structure of DnaT84-153-dT10 ssDNA complex form 1== | ==Crystal structure of DnaT84-153-dT10 ssDNA complex form 1== | ||
<StructureSection load='4ou6' size='340' side='right'caption='[[4ou6]]' scene=''> | <StructureSection load='4ou6' size='340' side='right'caption='[[4ou6]], [[Resolution|resolution]] 1.96Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OU6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OU6 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4ou6]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OU6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OU6 FirstGlance]. <br> | ||
</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=4ou6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ou6 OCA], [https://pdbe.org/4ou6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ou6 RCSB], [https://www.ebi.ac.uk/pdbsum/4ou6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ou6 ProSAT]</span></td></tr> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.96Å</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=4ou6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ou6 OCA], [https://pdbe.org/4ou6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ou6 RCSB], [https://www.ebi.ac.uk/pdbsum/4ou6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ou6 ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/DNAT_ECOLI DNAT_ECOLI] This protein is required for primosome-dependent normal DNA replication; it is also involved in inducing stable DNA replication during SOS response. It forms, in concert with DnaB protein and other prepriming proteins DnaC, N, N', N'' a prepriming protein complex on the specific site of the template DNA recognized by protein N'.[HAMAP-Rule:MF_01061] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
DnaT is a primosomal protein that is required for the stalled replication fork restart in Escherichia coli. As an adapter, DnaT mediates the PriA-PriB-ssDNA ternary complex and the DnaB/C complex. However, the fundamental function of DnaT during PriA-dependent primosome assembly is still a black box. Here, we report the 2.83 A DnaT84-153-dT10 ssDNA complex structure, which reveals a novel three-helix bundle single-stranded DNA binding mode. Based on binding assays and negative-staining electron microscopy results, we found that DnaT can bind to phiX 174 ssDNA to form nucleoprotein filaments for the first time, which indicates that DnaT might function as a scaffold protein during the PriA-dependent primosome assembly. In combination with biochemical analysis, we propose a cooperative mechanism for the binding of DnaT to ssDNA and a possible model for the assembly of PriA-PriB-ssDNA-DnaT complex that sheds light on the function of DnaT during the primosome assembly and stalled replication fork restart. This report presents the first structure of the DnaT C-terminal complex with ssDNA and a novel model that explains the interactions between the three-helix bundle and ssDNA. | |||
Crystal structure of DnaT84-153-dT10 ssDNA complex reveals a novel single-stranded DNA binding mode.,Liu Z, Chen P, Wang X, Cai G, Niu L, Teng M, Li X Nucleic Acids Res. 2014 Jul 22. pii: gku633. PMID:25053836<ref>PMID:25053836</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4ou6" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Escherichia coli K-12]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Chen P]] | [[Category: Chen P]] | ||
Latest revision as of 19:24, 29 May 2024
Crystal structure of DnaT84-153-dT10 ssDNA complex form 1
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