3bq3: Difference between revisions
New page: left|200px<br /><applet load="3bq3" size="350" color="white" frame="true" align="right" spinBox="true" caption="3bq3, resolution 1.90Å" /> '''Crystal structure of... |
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==Overview== | ==Overview== | ||
Cullin-based E3 ubiquitin ligases are activated through modification of | Cullin-based E3 ubiquitin ligases are activated through modification of the cullin subunit with the ubiquitin-like protein Nedd8. Dcn1 regulates cullin neddylation and thus ubiquitin ligase activity. Here we describe the 1.9 A X-ray crystal structure of yeast Dcn1 encompassing an N-terminal ubiquitin-binding (UBA) domain and a C-terminal domain of unique architecture, which we termed PONY domain. A conserved surface on Dcn1 is required for direct binding to cullins and for neddylation. The reciprocal binding site for Dcn1 on Cdc53 is located approximately 18 A from the site of neddylation. Dcn1 does not require cysteine residues for catalytic function, and directly interacts with the Nedd8 E2 Ubc12 on a surface that overlaps with the E1-binding site. We show that Dcn1 is necessary and sufficient for cullin neddylation in a purified recombinant system. Taken together, these data demonstrate that Dcn1 is a scaffold-like E3 ligase for cullin neddylation. | ||
==About this Structure== | ==About this Structure== | ||
3BQ3 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae] with <scene name='pdbligand=GOL:'>GOL</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Known structural/functional Site: <scene name='pdbsite=AC1:Gol Binding Site For Residue A 1'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQ3 OCA]. | 3BQ3 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae] with <scene name='pdbligand=GOL:'>GOL</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Known structural/functional Site: <scene name='pdbsite=AC1:Gol+Binding+Site+For+Residue+A+1'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQ3 OCA]. | ||
==Reference== | ==Reference== | ||
Dcn1 functions as a scaffold-type | Dcn1 functions as a scaffold-type E3 ligase for cullin neddylation., Kurz T, Chou YC, Willems AR, Meyer-Schaller N, Hecht ML, Tyers M, Peter M, Sicheri F, Mol Cell. 2008 Jan 18;29(1):23-35. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=18206966 18206966] | ||
[[Category: Saccharomyces cerevisiae]] | [[Category: Saccharomyces cerevisiae]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Chou, Y | [[Category: Chou, Y C.]] | ||
[[Category: Sicheri, F.]] | [[Category: Sicheri, F.]] | ||
[[Category: GOL]] | [[Category: GOL]] | ||
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[[Category: ubiquitination]] | [[Category: ubiquitination]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 19:07:06 2008'' | ||
Revision as of 17:07, 21 February 2008
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Crystal structure of S. cerevisiae Dcn1
Overview
Cullin-based E3 ubiquitin ligases are activated through modification of the cullin subunit with the ubiquitin-like protein Nedd8. Dcn1 regulates cullin neddylation and thus ubiquitin ligase activity. Here we describe the 1.9 A X-ray crystal structure of yeast Dcn1 encompassing an N-terminal ubiquitin-binding (UBA) domain and a C-terminal domain of unique architecture, which we termed PONY domain. A conserved surface on Dcn1 is required for direct binding to cullins and for neddylation. The reciprocal binding site for Dcn1 on Cdc53 is located approximately 18 A from the site of neddylation. Dcn1 does not require cysteine residues for catalytic function, and directly interacts with the Nedd8 E2 Ubc12 on a surface that overlaps with the E1-binding site. We show that Dcn1 is necessary and sufficient for cullin neddylation in a purified recombinant system. Taken together, these data demonstrate that Dcn1 is a scaffold-like E3 ligase for cullin neddylation.
About this Structure
3BQ3 is a Single protein structure of sequence from Saccharomyces cerevisiae with GOL as ligand. Known structural/functional Site: AC1. Full crystallographic information is available from OCA.
Reference
Dcn1 functions as a scaffold-type E3 ligase for cullin neddylation., Kurz T, Chou YC, Willems AR, Meyer-Schaller N, Hecht ML, Tyers M, Peter M, Sicheri F, Mol Cell. 2008 Jan 18;29(1):23-35. PMID:18206966
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