2RSP

STRUCTURE OF THE ASPARTIC PROTEASE FROM ROUS SARCOMA RETROVIRUS REFINED AT 2 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.144 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of the aspartic protease from Rous sarcoma retrovirus refined at 2-A resolution.

Jaskolski, M.Miller, M.Rao, J.K.Leis, J.Wlodawer, A.

(1990) Biochemistry 29: 5889-5898

  • DOI: 10.1021/bi00477a002
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The structure of Rous sarcoma virus protease has been solved by multiple isomorphous replacement in the crystal form belonging to space group P3(1)21, with unit-cell parameters a = 88.95 A and c = 78.90 A. The enzyme belongs to the family of aspartic ...

    The structure of Rous sarcoma virus protease has been solved by multiple isomorphous replacement in the crystal form belonging to space group P3(1)21, with unit-cell parameters a = 88.95 A and c = 78.90 A. The enzyme belongs to the family of aspartic proteases with two identical subunits composing the active homodimer. The noncrystallographic dyad relating these two subunits was identified after preliminary tracing in the MIR map and was used for phase improvement by electron-density averaging. Structure refinement resulted in a model that included 1772 protein atoms and 252 water molecules, with an R factor of 0.144 for data extending to 2 A. The secondary structure of a retroviral protease molecule closely resembles that of a single domain in pepsin-like aspartic proteases and consists of several beta-strands and of one well-defined and one distorted alpha-helix. The dimer interface is composed of the N- and C-terminal chains from both subunits which are intertwined to form a well-ordered four-stranded antiparallel beta-sheet. In each monomer, the catalytic triad (Asp-Ser-Gly) is located in a loop that forms a part of the psi-structure characteristic to all aspartic proteases. The position of a water molecule between the active-site aspartate residues and the general scheme of H bonding within the active site bear close resemblance to those in pepsin-like aspartic proteases and therefore suggest a similar enzymatic mechanism. The binding cleft over the active site is covered by two flap arms, one from each monomer, which are partially disordered. The retroviral protease dimer has been compared with several enzymes of cellular origin, with chains aligning to an rms deviation of 1.90 A or better.


    Related Citations: 
    • Crystal Structure of a Retroviral Protease Proves Relationship to Aspartic Protease Family
      Miller, M., Jaskolski, M., Rao, J.K.M., Leis, J., Wlodawer, A.
      (1989) Nature 337: 576

    Organizational Affiliation

    Crystallography Laboratory, NCI-Frederick Cancer Research and Development Center, Maryland 21701.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RSV PROTEASE
A, B
124Rous sarcoma virusMutation(s): 0 
EC: 3.4.23
Find proteins for P03322 (Rous sarcoma virus (strain Prague C))
Go to UniProtKB:  P03322
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.144 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.95α = 90
b = 88.95β = 90
c = 78.9γ = 120
Software Package:
Software NamePurpose
PROFFTrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1989-10-17
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance