4rki
From Proteopedia
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==Crystal structure of sliding beta clamp from Helicobacter pylori== | ==Crystal structure of sliding beta clamp from Helicobacter pylori== | ||
<StructureSection load='4rki' size='340' side='right' caption='[[4rki]], [[Resolution|resolution]] 2.05Å' scene=''> | <StructureSection load='4rki' size='340' side='right' caption='[[4rki]], [[Resolution|resolution]] 2.05Å' scene=''> | ||
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<table><tr><td colspan='2'>[[4rki]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RKI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RKI FirstGlance]. <br> | <table><tr><td colspan='2'>[[4rki]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RKI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RKI FirstGlance]. <br> | ||
</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[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] </span></td></tr> | </td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[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] </span></td></tr> | ||
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4rki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rki OCA], [http://pdbe.org/4rki PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4rki RCSB], [http://www.ebi.ac.uk/pdbsum/4rki PDBsum]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4rki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rki OCA], [http://pdbe.org/4rki PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4rki RCSB], [http://www.ebi.ac.uk/pdbsum/4rki PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4rki ProSAT]</span></td></tr> |
</table> | </table> | ||
== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/DPO3B_HELPY DPO3B_HELPY]] DNA polymerase III is a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria. This DNA polymerase also exhibits 3' to 5' exonuclease activity. The beta chain is required for initiation of replication once it is clamped onto DNA, it slides freely (bidirectional and ATP-independent) along duplex DNA (By similarity). | [[http://www.uniprot.org/uniprot/DPO3B_HELPY DPO3B_HELPY]] DNA polymerase III is a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria. This DNA polymerase also exhibits 3' to 5' exonuclease activity. The beta chain is required for initiation of replication once it is clamped onto DNA, it slides freely (bidirectional and ATP-independent) along duplex DNA (By similarity). | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Helicobacter pylori, a gram-negative and microaerophilic bacterium, is the major cause of chronic gastritis, gastric ulcers and gastric cancer. Owing to its central role, DNA replication machinery has emerged as a prime target for the development of antimicrobial drugs. Here, we report 2A structure of beta-clamp from H. pylori (Hpbeta-clamp), which is one of the critical components of DNA polymerase III. Despite of similarity in the overall fold of eubacterial beta-clamp structures, some distinct features in DNA interacting loops exists that have not been reported previously. The in silico prediction identified the potential binders of beta-clamp such as alpha subunit of DNA pol III and DNA ligase with identification of beta-clamp binding regions in them and validated by SPR studies. Hpbeta-clamp interacts with DNA ligase in micromolar binding affinity. Moreover, we have successfully determined the co-crystal structure of beta-clamp with peptide from DNA ligase (not reported earlier in prokaryotes) revealing the region from ligase that interacts with beta-clamp. | ||
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| + | Structural insight into beta-Clamp and its interaction with DNA Ligase in Helicobacter pylori.,Pandey P, Tarique KF, Mazumder M, Rehman SA, Kumari N, Gourinath S Sci Rep. 2016 Aug 8;6:31181. doi: 10.1038/srep31181. PMID:27499105<ref>PMID:27499105</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 4rki" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Revision as of 04:59, 9 September 2016
Crystal structure of sliding beta clamp from Helicobacter pylori
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