2hye
From Proteopedia
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| - | [[Image:2hye.gif|left|200px]] | + | [[Image:2hye.gif|left|200px]] |
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| - | '''Crystal Structure of the DDB1-Cul4A-Rbx1-SV5V Complex''' | + | {{Structure |
| + | |PDB= 2hye |SIZE=350|CAPTION= <scene name='initialview01'>2hye</scene>, resolution 3.1Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC ION'>ZN</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= DDB1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), P/V ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10633 Simian virus 40]), CUL4A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), RBX1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
| + | }} | ||
| + | |||
| + | '''Crystal Structure of the DDB1-Cul4A-Rbx1-SV5V Complex''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2HYE is a [ | + | 2HYE is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HYE OCA]. |
==Reference== | ==Reference== | ||
| - | Molecular architecture and assembly of the DDB1-CUL4A ubiquitin ligase machinery., Angers S, Li T, Yi X, MacCoss MJ, Moon RT, Zheng N, Nature. 2006 Oct 5;443(7111):590-3. PMID:[http:// | + | Molecular architecture and assembly of the DDB1-CUL4A ubiquitin ligase machinery., Angers S, Li T, Yi X, MacCoss MJ, Moon RT, Zheng N, Nature. 2006 Oct 5;443(7111):590-3. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16964240 16964240] |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
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[[Category: ZN]] | [[Category: ZN]] | ||
[[Category: beta propeller]] | [[Category: beta propeller]] | ||
| - | [[Category: cullin | + | [[Category: cullin repeat]] |
| - | [[Category: helical | + | [[Category: helical repeat]] |
[[Category: propeller cluster]] | [[Category: propeller cluster]] | ||
[[Category: protein binding]] | [[Category: protein binding]] | ||
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[[Category: zinc finger]] | [[Category: zinc finger]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:23:10 2008'' |
Revision as of 15:23, 20 March 2008
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| , resolution 3.1Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | DDB1 (Homo sapiens), P/V (Simian virus 40), CUL4A (Homo sapiens), RBX1 (Homo sapiens) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of the DDB1-Cul4A-Rbx1-SV5V Complex
Contents |
Overview
Protein ubiquitination is a common form of post-translational modification that regulates a broad spectrum of protein substrates in diverse cellular pathways. Through a three-enzyme (E1-E2-E3) cascade, the attachment of ubiquitin to proteins is catalysed by the E3 ubiquitin ligase, which is best represented by the superfamily of the cullin-RING complexes. Conserved from yeast to human, the DDB1-CUL4-ROC1 complex is a recently identified cullin-RING ubiquitin ligase, which regulates DNA repair, DNA replication and transcription, and can also be subverted by pathogenic viruses to benefit viral infection. Lacking a canonical SKP1-like cullin adaptor and a defined substrate recruitment module, how the DDB1-CUL4-ROC1 E3 apparatus is assembled for ubiquitinating various substrates remains unclear. Here we present crystallographic analyses of the virally hijacked form of the human DDB1-CUL4A-ROC1 machinery, which show that DDB1 uses one beta-propeller domain for cullin scaffold binding and a variably attached separate double-beta-propeller fold for substrate presentation. Through tandem-affinity purification of human DDB1 and CUL4A complexes followed by mass spectrometry analysis, we then identify a novel family of WD40-repeat proteins, which directly bind to the double-propeller fold of DDB1 and serve as the substrate-recruiting module of the E3. Together, our structural and proteomic results reveal the structural mechanisms and molecular logic underlying the assembly and versatility of a new family of cullin-RING E3 complexes.
Disease
Known disease associated with this structure: Xeroderma pigmentosum, group E, subtype 2 OMIM:[600045]
About this Structure
2HYE is a Protein complex structure of sequences from Homo sapiens and Simian virus 40. Full crystallographic information is available from OCA.
Reference
Molecular architecture and assembly of the DDB1-CUL4A ubiquitin ligase machinery., Angers S, Li T, Yi X, MacCoss MJ, Moon RT, Zheng N, Nature. 2006 Oct 5;443(7111):590-3. PMID:16964240
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