Macromolecule Content

• Total Structure Weight: 16633.35 
• Atom Count: 1161 
• Residue Count: 145 
• Unique protein chains: 1

1KPQ

Structure of the Tsg101 UEV domain

• DOI: 10.2210/pdb1KPQ/pdb
• BMRB: 5532

• Classification: CELL CYCLE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2002-01-02 Released: 2002-05-25 
• Deposition Author(s): Pornillos, O., Alam, S.L., Rich, R.L., Myszka, D.G., Davis, D.R., Sundquist, W.I.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 15 
• Selection Criteria: Structures with the lowest DYANA target function 

Literature

Structure and functional interactions of the Tsg101 UEV domain.

Pornillos, O., Alam, S.L., Rich, R.L., Myszka, D.G., Davis, D.R., Sundquist, W.I.

(2002) EMBO J. 21: 2397-2406

• PubMed: 12006492 
• DOI: 10.1093/emboj/21.10.2397
• Primary Citation of Related Structures:  
  1KPP


• PubMed Abstract: 
  

Human Tsg101 plays key roles in HIV budding and in cellular vacuolar protein sorting (VPS). In performing these functions, Tsg101 binds both ubiquitin (Ub) and the PTAP tetrapeptide 'late domain' motif located within the viral Gag protein. These interactions are mediated by the N-terminal domain of Tsg101, which belongs to the catalytically inactive ubiquitin E2 variant (UEV) family. We now report the structure of Tsg101 UEV and chemical shift mapping of the Ub and PTAP binding sites. Tsg101 UEV resembles canonical E2 ubiquitin conjugating enzymes, but has an additional N-terminal helix, an extended beta-hairpin that links strands 1 and 2, and lacks the two C-terminal helices normally found in E2 enzymes. PTAP-containing peptides bind in a hydrophobic cleft exposed by the absence of the C-terminal helices, whereas ubiquitin binds in a novel site surrounding the beta-hairpin. These studies provide a structural framework for understanding how Tsg101 mediates the protein-protein interactions required for HIV budding and VPS.

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Organizational Affiliation: 

Department of Biochemistry and Center for Biomolecular Interactions Analysis, University of Utah, Salt Lake City 84132, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Tumor susceptibility gene 101 protein	A	145	Homo sapiens	Mutation(s): 0  Gene Names: TSG101
Find proteins for Q99816 (Homo sapiens) Go to Gene View: TSG101 Go to UniProtKB:  Q99816

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 15 
• Selection Criteria: Structures with the lowest DYANA target function 
• Olderado: 1KPQ Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-01-02 
• Released Date: 2002-05-25 
• Deposition Author(s): Pornillos, O., Alam, S.L., Rich, R.L., Myszka, D.G., Davis, D.R., Sundquist, W.I.

Revision History 

• Version 1.0: 2002-05-25
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance