5LMY

Solution structure of the m-pmv myristoylated matrix protein


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 15 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history

Re-refinement Note

This entry reflects an alternative modeling of the original data in:18282


Literature

Membrane Interactions of the Mason-Pfizer Monkey Virus Matrix Protein and Its Budding Deficient Mutants.

Kroupa, T.Langerova, H.Dolezal, M.Prchal, J.Spiwok, V.Hunter, E.Rumlova, M.Hrabal, R.Ruml, T.

(2016) J Mol Biol 428: 4708-4722

  • DOI: 10.1016/j.jmb.2016.10.010
  • Primary Citation of Related Structures:  
    5LDL, 5LMY

  • PubMed Abstract: 
  • Matrix proteins (MAs) play a key role in the transport of retroviral proteins inside infected cells and in the interaction with cellular membranes. In most retroviruses, retroviral MAs are N-terminally myristoylated. This modification serves as a membrane targeting signal and also as an anchor for membrane interaction ...

    Matrix proteins (MAs) play a key role in the transport of retroviral proteins inside infected cells and in the interaction with cellular membranes. In most retroviruses, retroviral MAs are N-terminally myristoylated. This modification serves as a membrane targeting signal and also as an anchor for membrane interaction. The aim of this work was to characterize the interactions anchoring retroviral MA at the plasma membrane of infected cell. To address this issue, we compared the structures and membrane affinity of the Mason-Pfizer monkey virus (M-PMV) wild-type MA with its two budding deficient double mutants, that is, T41I/T78I and Y28F/Y67F. The structures of the mutants were determined using solution NMR spectroscopy, and their interactions with water-soluble phospholipids were studied. Water-soluble phospholipids are widely used models for studying membrane interactions by solution NMR spectroscopy. However, this approach might lead to artificial results due to unnatural hydrophobic interactions. Therefore, we used a new approach based on the measurement of the loss of the 1 H NMR signal intensity of the protein sample induced by the addition of the liposomes containing phospholipids with naturally long fatty acids. HIV-1 MA was used as a positive control because its ability to interact with liposomes has already been described. We found that in contrast to HIV-1, the M-PMV MA interacted with the liposomes differently and much weaker. In our invivo experiments, the M-PMV MA did not co-localize with lipid rafts. Therefore, we concluded that M-PMV might adopt a different membrane binding mechanism than HIV-1.


    Related Citations: 
    • The structure of myristoylated Mason-Pfizer monkey virus matrix protein and the role of phosphatidylinositol-(4,5)-bisphosphate in its membrane binding.
      Prchal, J., Srb, P., Hunter, E., Ruml, T., Hrabal, R.
      (2012) J Mol Biol 423: 427

    Organizational Affiliation

    Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic. Electronic address: rumlt@vscht.cz.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Matrix protein p10A125Mason-Pfizer monkey virusMutation(s): 0 
Gene Names: gag
UniProt
Find proteins for P07567 (Mason-Pfizer monkey virus)
Explore P07567 
Go to UniProtKB:  P07567
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 15 
  • OLDERADO: 5LMY Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2016-08-02 
  • Released Date: 2016-10-05 
  • Deposition Author(s): Prchal, J., Hrabal, R.
  • This entry supersedes: 2LPY

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-05
    Type: Initial release
  • Version 1.1: 2016-10-19
    Changes: Database references
  • Version 1.2: 2016-11-30
    Changes: Database references
  • Version 1.3: 2019-05-08
    Changes: Data collection