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2j8x

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[[Image:2j8x.jpg|left|200px]]<br /><applet load="2j8x" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:2j8x.jpg|left|200px]]
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caption="2j8x, resolution 2.30&Aring;" />
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'''EPSTEIN-BARR VIRUS URACIL-DNA GLYCOSYLASE IN COMPLEX WITH UGI FROM PBS-2'''<br />
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{{Structure
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|PDB= 2j8x |SIZE=350|CAPTION= <scene name='initialview01'>2j8x</scene>, resolution 2.30&Aring;
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|SITE= <scene name='pdbsite=AC1:Ure+Binding+Site+For+Chain+D'>AC1</scene>
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|LIGAND= <scene name='pdbligand=URE:UREA'>URE</scene>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Uridine_nucleosidase Uridine nucleosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.2.3 3.2.2.3]
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|GENE=
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}}
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'''EPSTEIN-BARR VIRUS URACIL-DNA GLYCOSYLASE IN COMPLEX WITH UGI FROM PBS-2'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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2J8X is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Human_herpesvirus_4 Human herpesvirus 4] and [http://en.wikipedia.org/wiki/Phage_pbs1 Phage pbs1] with <scene name='pdbligand=URE:'>URE</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Uridine_nucleosidase Uridine nucleosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.2.3 3.2.2.3] Known structural/functional Site: <scene name='pdbsite=AC1:Ure+Binding+Site+For+Chain+D'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J8X OCA].
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2J8X is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Human_herpesvirus_4 Human herpesvirus 4] and [http://en.wikipedia.org/wiki/Phage_pbs1 Phage pbs1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J8X OCA].
==Reference==
==Reference==
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New insights on the role of the gamma-herpesvirus uracil-DNA glycosylase leucine loop revealed by the structure of the Epstein-Barr virus enzyme in complex with an inhibitor protein., Geoui T, Buisson M, Tarbouriech N, Burmeister WP, J Mol Biol. 2007 Feb 9;366(1):117-31. Epub 2006 Nov 7. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17157317 17157317]
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New insights on the role of the gamma-herpesvirus uracil-DNA glycosylase leucine loop revealed by the structure of the Epstein-Barr virus enzyme in complex with an inhibitor protein., Geoui T, Buisson M, Tarbouriech N, Burmeister WP, J Mol Biol. 2007 Feb 9;366(1):117-31. Epub 2006 Nov 7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17157317 17157317]
[[Category: Human herpesvirus 4]]
[[Category: Human herpesvirus 4]]
[[Category: Phage pbs1]]
[[Category: Phage pbs1]]
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[[Category: uracil-dna glycosylase inhibitor]]
[[Category: uracil-dna glycosylase inhibitor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:00:44 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:38:48 2008''

Revision as of 15:38, 20 March 2008

Image:2j8x.jpg


PDB ID 2j8x

Drag the structure with the mouse to rotate
, resolution 2.30Å
Sites:
Ligands:
Activity: Uridine nucleosidase, with EC number 3.2.2.3
Coordinates: save as pdb, mmCIF, xml



EPSTEIN-BARR VIRUS URACIL-DNA GLYCOSYLASE IN COMPLEX WITH UGI FROM PBS-2


Overview

Epstein-Barr virus (EBV) is a human gamma-herpesvirus. Within its 86 open reading frame containing genome, two enzymes avoiding uracil incorporation into DNA can be found: uracil triphosphate hydrolase and uracil-DNA glycosylase (UNG). The latter one excises uracil bases that are due to cytosine deamination or uracil misincorporation from double-stranded DNA substrates. The EBV enzyme belongs to family 1 UNGs. We solved the three-dimensional structure of EBV UNG in complex with the uracil-DNA glycosylase inhibitor protein (Ugi) from bacteriophage PBS-2 at a resolution of 2.3 A by X-ray crystallography. The structure of EBV UNG encoded by the BKRF3 reading frame shows the excellent global structural conservation within the solved examples of family 1 enzymes. Four out of the five catalytic motifs are completely conserved, whereas the fifth one, the leucine loop, carries a seven residue insertion. Despite this insertion, catalytic constants of EBV UNG are similar to those of other UNGs. Modelling of the EBV UNG-DNA complex shows that the longer leucine loop still contacts DNA and is likely to fulfil its role of DNA binding and deformation differently than the enzymes with previously solved structures. We could show that despite the evolutionary distance of EBV UNG from the natural host protein, bacteriophage Ugi binds with an inhibitory constant of 8 nM to UNG. This is due to an excellent specificity of Ugi for conserved elements of UNG, four of them corresponding to catalytic motifs and a fifth one corresponding to an important beta-turn structuring the catalytic site.

About this Structure

2J8X is a Protein complex structure of sequences from Human herpesvirus 4 and Phage pbs1. Full crystallographic information is available from OCA.

Reference

New insights on the role of the gamma-herpesvirus uracil-DNA glycosylase leucine loop revealed by the structure of the Epstein-Barr virus enzyme in complex with an inhibitor protein., Geoui T, Buisson M, Tarbouriech N, Burmeister WP, J Mol Biol. 2007 Feb 9;366(1):117-31. Epub 2006 Nov 7. PMID:17157317

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