3gxv

From Proteopedia

(Difference between revisions)

Current revision

Three-dimensional structure of N-terminal domain of DnaB Helicase from Helicobacter pylori and its interactions with primase

Structural highlights

3gxv is a 4 chain structure with sequence from Helicobacter pylori. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.2Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

DNAB_HELPY Participates in initiation and elongation during chromosome replication; it exhibits DNA-dependent ATPase activity and contains distinct active sites for ATP binding, DNA binding, and interaction with DnaC protein, primase, and other prepriming proteins (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

Replication initiation is a crucial step in genome duplication and homohexameric DnaB helicase plays a central role in the replication initiation process by unwinding the duplex DNA and interacting with several other proteins during the process of replication. N-terminal domain of DnaB is critical for helicase activity and for DnaG primase interactions. We present here the crystal structure of the N-terminal domain (NTD) of H. pylori DnaB (HpDnaB) helicase at 2.2 A resolution and compare the structural differences among helicases and correlate with the functional differences. The structural details of NTD suggest that the linker region between NTD and C-terminal helicase domain plays a vital role in accurate assembly of NTD dimers. The sequence analysis of the linker regions from several helicases reveals that they should form four helix bundles. We also report the characterization of H. pylori DnaG primase and study the helicase-primase interactions, where HpDnaG primase stimulates DNA unwinding activity of HpDnaB suggesting presence of helicase-primase cohort at the replication fork. The protein-protein interaction study of C-terminal domain of primase and different deletion constructs of helicase suggests that linker is essential for proper conformation of NTD to interact strongly with HpDnaG. The surface charge distribution on the primase binding surface of NTDs of various helicases suggests that DnaB-DnaG interaction and stability of the complex is most probably charge dependent. Structure of the linker and helicase-primase interactions indicate that HpDnaB differs greatly from E.coli DnaB despite both belong to gram negative bacteria.

Three-dimensional structure of N-terminal domain of DnaB helicase and helicase-primase interactions in Helicobacter pylori.,Kashav T, Nitharwal R, Abdulrehman SA, Gabdoulkhakov A, Saenger W, Dhar SK, Gourinath S PLoS One. 2009 Oct 20;4(10):e7515. PMID:19841750^[1]

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

References

↑ Kashav T, Nitharwal R, Abdulrehman SA, Gabdoulkhakov A, Saenger W, Dhar SK, Gourinath S. Three-dimensional structure of N-terminal domain of DnaB helicase and helicase-primase interactions in Helicobacter pylori. PLoS One. 2009 Oct 20;4(10):e7515. PMID:19841750 doi:10.1371/journal.pone.0007515

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/3gxv"

@@ Line 3: / Line 3: @@
 <StructureSection load='3gxv' size='340' side='right'caption='[[3gxv]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3gxv]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_43504 Atcc 43504]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GXV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3GXV FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3gxv]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Helicobacter_pylori Helicobacter pylori]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GXV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3GXV FirstGlance]. <br>
-</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HP_1362 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=210 ATCC 43504])</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]] 2.2&#8491;</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=3gxv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gxv OCA], [https://pdbe.org/3gxv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3gxv RCSB], [https://www.ebi.ac.uk/pdbsum/3gxv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3gxv ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/DNAB_HELPY DNAB_HELPY]] Participates in initiation and elongation during chromosome replication; it exhibits DNA-dependent ATPase activity and contains distinct active sites for ATP binding, DNA binding, and interaction with DnaC protein, primase, and other prepriming proteins (By similarity).
+[https://www.uniprot.org/uniprot/DNAB_HELPY DNAB_HELPY] Participates in initiation and elongation during chromosome replication; it exhibits DNA-dependent ATPase activity and contains distinct active sites for ATP binding, DNA binding, and interaction with DnaC protein, primase, and other prepriming proteins (By similarity).
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 35: / Line 35: @@
 __TOC__
 </StructureSection>
-[[Category: Atcc 43504]]
-[[Category: Large Structures]]
-[[Category: Dhar, K S]]
-[[Category: Gabdoulkhakov, A]]
-[[Category: Gourinath, S]]
-[[Category: Kashav, T]]
-[[Category: Nitharwal, R]]
-[[Category: Saenger, W]]
-[[Category: Syed, A A]]
-[[Category: Atp-binding]]
-[[Category: Autocatalytic cleavage]]
-[[Category: Dna replication]]
-[[Category: Dna-binding]]
-[[Category: Dna-binding hydrolase]]
-[[Category: Helicase]]
 [[Category: Helicobacter pylori]]
-[[Category: Hexameric helicase]]
+[[Category: Large Structures]]
-[[Category: Hydrolase]]
+[[Category: Dhar KS]]
-[[Category: Hydrolase-replication complex]]
+[[Category: Gabdoulkhakov A]]
-[[Category: Nucleotide-binding]]
+[[Category: Gourinath S]]
-[[Category: Primase]]
+[[Category: Kashav T]]
-[[Category: Primosome]]
+[[Category: Nitharwal R]]
-[[Category: Replication]]
+[[Category: Saenger W]]
+[[Category: Syed AA]]

3gxv

From Proteopedia

Current revision

Three-dimensional structure of N-terminal domain of DnaB Helicase from Helicobacter pylori and its interactions with primase

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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