Macromolecule Content

• Total Structure Weight: 14.14 kDa 
• Atom Count: 990 
• Modelled Residue Count: 125 
• Deposited Residue Count: 125 
• Unique protein chains: 2

1OTR

Solution Structure of a CUE-Ubiquitin Complex

• DOI: 10.2210/pdb1OTR/pdb

• Classification: CELL CYCLE
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2003-03-22 Released: 2003-06-24 
• Deposition Author(s): Kang, R.S., Daniels, C.M., Salerno, W.J., Radhakrishnan, I.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 80 
• Conformers Submitted: 20 
• Selection Criteria: The submitted conformer models are the 20 structures with the lowest restraint energies, restraint violations, and RMS deviations from ideal covalent geometry 

Literature

Solution Structure of a CUE-Ubiquitin Complex Reveals a Conserved Mode of Ubiquitin Binding

Kang, R.S., Daniels, C.M., Francis, S.A., Shih, S.C., Salerno, W.J., Hicke, L., Radhakrishnan, I.

(2003) Cell 113: 621-630

• PubMed: 12787503 
• DOI: 10.1016/s0092-8674(03)00362-3
• Primary Citation of Related Structures:  
  1OTR


• PubMed Abstract: 
  

Monoubiquitination serves as a regulatory signal in a variety of cellular processes. Monoubiquitin signals are transmitted by binding to a small but rapidly expanding class of ubiquitin binding motifs. Several of these motifs, including the CUE domain, also promote intramolecular monoubiquitination. The solution structure of a CUE domain of the yeast Cue2 protein in complex with ubiquitin reveals intermolecular interactions involving conserved hydrophobic surfaces, including the Leu8-Ile44-Val70 patch on ubiquitin. The contact surface extends beyond this patch and encompasses Lys48, a site of polyubiquitin chain formation. This suggests an occlusion mechanism for inhibiting polyubiquitin chain formation during monoubiquitin signaling. The CUE domain shares a similar overall architecture with the UBA domain, which also contains a conserved hydrophobic patch. Comparative modeling suggests that the UBA domain interacts analogously with ubiquitin. The structure of the CUE-ubiquitin complex may thus serve as a paradigm for ubiquitin recognition and signaling by ubiquitin binding proteins.

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Organizational Affiliation: 

Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, IL 60208, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
protein Cue2	A	49	Saccharomyces cerevisiae	Mutation(s): 0  Gene Names: CUE2
UniProt
Find proteins for P36075 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P36075  Go to UniProtKB:  P36075

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Ubiquitin	B	76	Saccharomyces cerevisiae	Mutation(s): 0  Gene Names: UBI1
UniProt
Find proteins for P0CG63 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P0CG63  Go to UniProtKB:  P0CG63

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 80 
• Conformers Submitted: 20 
• Selection Criteria: The submitted conformer models are the 20 structures with the lowest restraint energies, restraint violations, and RMS deviations from ideal covalent geometry 
• OLDERADO: 1OTR Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-03-22 
• Released Date: 2003-06-24 
Deposition Author(s): Kang, R.S., Daniels, C.M., Salerno, W.J., Radhakrishnan, I.

Revision History  

• Version 1.0: 2003-06-24
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance