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2ccz

From Proteopedia

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Crystal structure of E. coli primosomol protein PriB bound to ssDNA

Structural highlights

2ccz is a 3 chain structure with sequence from Escherichia coli K-12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.7Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PRIB_ECOLI Binds single-stranded DNA at the primosome assembly site (PAS). During primosome assembly it facilitates the complex formation between PriA and DnaT.^[1] ^[2] ^[3]

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

PriB is a primosomal protein required for replication restart in Escherichia coli. PriB stimulates PriA helicase activity via interaction with single-stranded DNA (ssDNA), but the molecular details of this interaction remain unclear. Here, we report the crystal structure of PriB complexed with a 15 bases oligonucleotide (dT15) at 2.7 A resolution. PriB shares structural similarity with the E.coli ssDNA-binding protein (EcoSSB). However, the structure of the PriB-dT15 complex reveals that PriB binds ssDNA differently. Results from filter-binding assays show that PriB-ssDNA interaction is salt-sensitive and cooperative. Mutational analysis suggests that the loop L45 plays an important role in ssDNA binding. Based on the crystal structure and biochemical analyses, we propose a cooperative mechanism for the binding of PriB to ssDNA and a model for the assembly of the PriA-PriB-ssDNA complex. This report presents the first structure of a replication restart primosomal protein complexed with DNA, and a novel model that explains the interactions between a dimeric oligonucleotide-binding-fold protein and ssDNA.

Complexed crystal structure of replication restart primosome protein PriB reveals a novel single-stranded DNA-binding mode.,Huang CY, Hsu CH, Sun YJ, Wu HN, Hsiao CD Nucleic Acids Res. 2006;34(14):3878-86. Epub 2006 Aug 9. PMID:16899446^[4]

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

References

↑ Zavitz KH, DiGate RJ, Marians KJ. The priB and priC replication proteins of Escherichia coli. Genes, DNA sequence, overexpression, and purification. J Biol Chem. 1991 Jul 25;266(21):13988-95. PMID:1856227
↑ Allen GC Jr, Kornberg A. The priB gene encoding the primosomal replication n protein of Escherichia coli. J Biol Chem. 1991 Jun 25;266(18):11610-3. PMID:1646811
↑ Allen GC Jr, Kornberg A. Assembly of the primosome of DNA replication in Escherichia coli. J Biol Chem. 1993 Sep 15;268(26):19204-9. PMID:8366072
↑ Huang CY, Hsu CH, Sun YJ, Wu HN, Hsiao CD. Complexed crystal structure of replication restart primosome protein PriB reveals a novel single-stranded DNA-binding mode. Nucleic Acids Res. 2006;34(14):3878-86. Epub 2006 Aug 9. PMID:16899446 doi:http://dx.doi.org/10.1093/nar/gkl536

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 3: / Line 3: @@
 <StructureSection load='2ccz' size='340' side='right'caption='[[2ccz]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2ccz]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CCZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2CCZ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2ccz]] is a 3 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=2CCZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2CCZ FirstGlance]. <br>
-</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=2ccz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ccz OCA], [http://pdbe.org/2ccz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ccz RCSB], [http://www.ebi.ac.uk/pdbsum/2ccz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ccz 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]] 2.7&#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=2ccz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ccz OCA], [https://pdbe.org/2ccz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ccz RCSB], [https://www.ebi.ac.uk/pdbsum/2ccz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ccz ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/PRIB_ECOLI PRIB_ECOLI] Binds single-stranded DNA at the primosome assembly site (PAS). During primosome assembly it facilitates the complex formation between PriA and DnaT.<ref>PMID:1856227</ref> <ref>PMID:1646811</ref> <ref>PMID:8366072</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 29: / Line 32: @@
 __TOC__
 </StructureSection>
-[[Category: Ecoli]]
+[[Category: Escherichia coli K-12]]
 [[Category: Large Structures]]
-[[Category: Hsiao, C D]]
+[[Category: Hsiao C-D]]
-[[Category: Hsu, C H]]
+[[Category: Hsu C-H]]
-[[Category: Huang, C Y]]
+[[Category: Huang C-Y]]
-[[Category: Sun, Y J]]
+[[Category: Sun Y-J]]
-[[Category: Wu, H N]]
+[[Category: Wu H-N]]
-[[Category: Dna recombination]]
-[[Category: Dna repair]]
-[[Category: Dna replication]]
-[[Category: Dna-protein complex]]
-[[Category: Dna-replication complex]]
-[[Category: Dna/replication]]
-[[Category: Prib]]
-[[Category: Primosome]]
-[[Category: Single-stranded dna]]
-[[Category: Ssdna]]

2ccz

From Proteopedia

Current revision

Crystal structure of E. coli primosomol protein PriB bound to ssDNA

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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