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<StructureSection load='3btp' size='340' side='right'caption='[[3btp]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
<StructureSection load='3btp' size='340' side='right'caption='[[3btp]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3btp]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Agrfc Agrfc]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BTP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BTP FirstGlance]. <br>
<table><tr><td colspan='2'>[[3btp]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Agrobacterium_fabrum_str._C58 Agrobacterium fabrum str. C58]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BTP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BTP FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NH4:AMMONIUM+ION'>NH4</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></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]] 2.3&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">virE2, Atu6190, AGR_pTi_28 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=176299 AGRFC]), virE1, Atu6189, AGR_pTi_26 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=176299 AGRFC])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NH4:AMMONIUM+ION'>NH4</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></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=3btp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3btp OCA], [https://pdbe.org/3btp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3btp RCSB], [https://www.ebi.ac.uk/pdbsum/3btp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3btp ProSAT]</span></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=3btp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3btp OCA], [https://pdbe.org/3btp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3btp RCSB], [https://www.ebi.ac.uk/pdbsum/3btp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3btp ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/VIRE2_AGRT5 VIRE2_AGRT5]] Involved in DNA transformation; mediates the nuclear uptake of single-stranded DNA copies of the transferred DNA (T-DNA) element. Binds single-stranded but not double-stranded DNA regardless of nucleotide sequence composition.<ref>PMID:17784072</ref> <ref>PMID:8637884</ref> <ref>PMID:12124400</ref> [[https://www.uniprot.org/uniprot/VIRE1_AGRT5 VIRE1_AGRT5]] Involved in DNA transformation; controls virE2 polymerization and prevents virE2 binding to DNA.
[https://www.uniprot.org/uniprot/VIRE2_AGRFC VIRE2_AGRFC] Involved in DNA transformation; mediates the nuclear uptake of single-stranded DNA copies of the transferred DNA (T-DNA) element. Binds single-stranded but not double-stranded DNA regardless of nucleotide sequence composition.<ref>PMID:12124400</ref> <ref>PMID:17784072</ref> <ref>PMID:8637884</ref>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3btp ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3btp ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Agrobacterium tumefaciens infects its plant hosts by a mechanism of horizontal gene transfer. This capability has led to its widespread use in artificial genetic transformation. In addition to DNA, the bacterium delivers an abundant ssDNA binding protein, VirE2, whose roles in the host include protection from cytoplasmic nucleases and adaptation for nuclear import. In Agrobacterium, VirE2 is bound to its acidic chaperone VirE1. When expressed in vitro in the absence of VirE1, VirE2 is prone to oligomerization and forms disordered filamentous aggregates. These filaments adopt an ordered solenoidal form in the presence of ssDNA, which was characterized previously by electron microscopy and three-dimensional image processing. VirE2 coexpressed in vitro with VirE1 forms a soluble heterodimer. VirE1 thus prevents VirE2 oligomerization and competes with its binding to ssDNA. We present here a crystal structure of VirE2 in complex with VirE1, showing that VirE2 is composed of two independent domains presenting a novel fold, joined by a flexible linker. Electrostatic interactions with VirE1 cement the two domains of VirE2 into a locked form. Comparison with the electron microscopy structure indicates that the VirE2 domains adopt different relative orientations. We suggest that the flexible linker between the domains enables VirE2 to accommodate its different binding partners.
Crystal structure of the Agrobacterium virulence complex VirE1-VirE2 reveals a flexible protein that can accommodate different partners.,Dym O, Albeck S, Unger T, Jacobovitch J, Branzburg A, Michael Y, Frenkiel-Krispin D, Wolf SG, Elbaum M Proc Natl Acad Sci U S A. 2008 Aug 12;105(32):11170-5. Epub 2008 Aug 4. PMID:18678909<ref>PMID:18678909</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3btp" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Agrfc]]
[[Category: Agrobacterium fabrum str. C58]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Albeck, S]]
[[Category: Albeck S]]
[[Category: Dym, O]]
[[Category: Dym O]]
[[Category: Elbaum, M]]
[[Category: Elbaum M]]
[[Category: ISPC, Israel Structural Proteomics Center]]
[[Category: Unger T]]
[[Category: Unger, T]]
[[Category: Chaperone]]
[[Category: Crown gall tumor]]
[[Category: Dna binding protein]]
[[Category: Dna-binding]]
[[Category: Novel fold]]
[[Category: Secreted]]
[[Category: Structural genomic]]
[[Category: Tim barrel]]
[[Category: Unique topology]]
[[Category: Virulence]]

Latest revision as of 09:31, 21 February 2024

Crystal structure of Agrobacterium tumefaciens VirE2 in complex with its chaperone VirE1: a novel fold and implications for DNA binding

3btp, resolution 2.30Å

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