2d7d

From Proteopedia

(Difference between revisions)

Revision as of 01:32, 12 September 2015

Structural insights into the cryptic DNA dependent ATP-ase activity of UvrB

Structural highlights

2d7d is a 3 chain structure with sequence from "bacillus_globigii"_migula_1900 "bacillus globigii" migula 1900. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Gene:	uvrB ("Bacillus globigii" Migula 1900)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[UVRB_BACSU] The UvrABC repair system catalyzes the recognition and processing of DNA lesions. A damage recognition complex composed of 2 UvrA and 2 UvrB subunits scans DNA for abnormalities. Upon binding of the UvrA(2)B(2) complex to a putative damaged site, the DNA wraps around one UvrB monomer. DNA wrap is dependent on ATP binding by UvrB and probably causes local melting of the DNA helix, facilitating insertion of UvrB beta-hairpin between the DNA strands. Then UvrB probes one DNA strand for the presence of a lesion. If a lesion is found the UvrA subunits dissociate and the UvrB-DNA preincision complex is formed. This complex is subsequently bound by UvrC and the second UvrB is released. If no lesion is found, the DNA wraps around the other UvrB subunit that will check the other stand for damage (By similarity).

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The UvrABC pathway is a ubiquitously occurring mechanism targeted towards the repair of bulky base damage. Key to this process is UvrB, a DNA-dependent limited helicase that acts as a lesion recognition element whilst part of a tracking complex involving UvrA, and as a DNA-binding platform required for the presentation of damage to UvrC for subsequent processing. We have been able to determine the structure of a ternary complex involving UvrB* (a C-terminal truncation of full-length UvrB), a polythymine trinucleotide and ADP. This structure has highlighted the roles of key conserved residues in DNA binding distinct from those of the beta-hairpin, where most of the attention in previous studies has been focussed. We are also the first to report the structural basis underlying conformational re-modelling of the beta-hairpin that is absolutely required for DNA binding and how this event results in an ATPase primed for catalysis. Our data provide the first insights at the molecular level into the transformation of UvrB into an active helicase.

Structural insights into the cryptic DNA-dependent ATPase activity of UvrB.,Eryilmaz J, Ceschini S, Ryan J, Geddes S, Waters TR, Barrett TE J Mol Biol. 2006 Mar 17;357(1):62-72. Epub 2006 Jan 6. PMID:16426634^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Eryilmaz J, Ceschini S, Ryan J, Geddes S, Waters TR, Barrett TE. Structural insights into the cryptic DNA-dependent ATPase activity of UvrB. J Mol Biol. 2006 Mar 17;357(1):62-72. Epub 2006 Jan 6. PMID:16426634 doi:10.1016/j.jmb.2005.12.059

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2d7d"

Categories: Bacillus globigii migula 1900 | Barrett, T E | Helicase | Hydrolase-dna complex | Protein-dna-adp ternary complex

@@ Line 2: / Line 2: @@
 <StructureSection load='2d7d' size='340' side='right' caption='[[2d7d]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2d7d]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2D7D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2D7D FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2d7d]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_globigii"_migula_1900 "bacillus globigii" migula 1900]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2D7D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2D7D FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">uvrB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 Bacillus subtilis])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">uvrB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Bacillus globigii" Migula 1900])</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=2d7d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2d7d OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2d7d RCSB], [http://www.ebi.ac.uk/pdbsum/2d7d 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=2d7d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2d7d OCA], [http://pdbe.org/2d7d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2d7d RCSB], [http://www.ebi.ac.uk/pdbsum/2d7d PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 27: / Line 27: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2d7d" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 34: / Line 35: @@
 __TOC__
 </StructureSection>
-[[Category: Bacillus subtilis]]
+[[Category: Bacillus globigii migula 1900]]
 [[Category: Barrett, T E]]
 [[Category: Helicase]]
 [[Category: Hydrolase-dna complex]]
 [[Category: Protein-dna-adp ternary complex]]

2d7d

From Proteopedia

Revision as of 01:32, 12 September 2015

Structural insights into the cryptic DNA dependent ATP-ase activity of UvrB

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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