1VPU | pdb_00001vpu

NMR SOLUTION STRUCTURE OF THE HIV-1 VPU CYTOPLASMIC DOMAIN, 9 STRUCTURES

• PDB DOI: https://doi.org/10.2210/pdb1VPU/pdb

• Classification: AIDS
• Organism(s): Human immunodeficiency virus 1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 1997-01-28 Released: 1997-05-15 
• Deposition Author(s): Willbold, D., Hoffmann, S., Rosch, P.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 25 
• Conformers Submitted: 9 
• Selection Criteria: ENERGY, AGREEMENT WITH EXPERIMENTAL DATA 

Literature

Secondary structure and tertiary fold of the human immunodeficiency virus protein U (Vpu) cytoplasmic domain in solution.

Willbold, D., Hoffmann, S., Rosch, P.

(1997) Eur J Biochem 245: 581-588

• PubMed: 9182993 
• DOI: https://doi.org/10.1111/j.1432-1033.1997.t01-1-00581.x
• Primary Citation Related Structures: 
  1VPU


• PubMed Abstract: 
  

  The human immunodeficiency virus type 1 Vpu protein enhances virus particle release from infected cells, decreases the tendency of syncytia formation and induces degradation of human CD4 receptor. It is known that the cytoplasmic part of Vpu is responsible for direct interaction to and degradation of CD4. The tertiary fold of the Vpu cytoplasmic domain in aqueous solution was determined employing NMR spectroscopy and molecular-dynamics simulated-annealing protocols. We found a very well defined amphipathic alpha-helix in the membrane proximal part (40-50), a less well defined helix (60-68), and a short alpha-helix at the C-terminus (75-79). We further determined the overall tertiary structure based on long-range nuclear Overhauser enhancement effects. Correlation of results from mutation experiments of Vpu and the structure data is discussed.

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Organizational Affiliation: 
• Lehrstuhl für Biopolymere, Universität Bayreuth, Germany. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 5.11 kDa 
• Atom Count: 359 
• Modeled Residue Count: 45 
• Deposited Residue Count: 45 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
VPU PROTEIN	A	45	Human immunodeficiency virus 1	Mutation(s): 0  Gene Names: SYNTHETIC GENE Membrane Entity: Yes
UniProt
Find proteins for P19554 (Human immunodeficiency virus type 1 group M subtype B (isolate SF162)) Explore P19554  Go to UniProtKB:  P19554

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 25 
• Conformers Submitted: 9 
• Selection Criteria: ENERGY, AGREEMENT WITH EXPERIMENTAL DATA 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-05-15 
Deposition Author(s): Willbold, D., Hoffmann, S., Rosch, P.

Revision History  

• Version 1.0: 1997-05-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-02
  Changes: Database references, Derived calculations, Other
• Version 1.4: 2024-05-22
  Changes: Data collection