3IXO

Crystal Structure of uncomplexed HIV_1 Protease Subtype A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the unbound form of HIV-1 subtype A protease: comparison with unbound forms of proteases from other HIV subtypes.

Robbins, A.H.Coman, R.M.Bracho-Sanchez, E.Fernandez, M.A.Gilliland, C.T.Li, M.Agbandje-McKenna, M.Wlodawer, A.Dunn, B.M.McKenna, R.

(2010) Acta Crystallogr.,Sect.D 66: 233-242

  • DOI: 10.1107/S0907444909054298

  • PubMed Abstract: 
  • The crystal structure of the unbound form of HIV-1 subtype A protease (PR) has been determined to 1.7 A resolution and refined as a homodimer in the hexagonal space group P6(1) to an R(cryst) of 20.5%. The structure is similar in overall shape and fo ...

    The crystal structure of the unbound form of HIV-1 subtype A protease (PR) has been determined to 1.7 A resolution and refined as a homodimer in the hexagonal space group P6(1) to an R(cryst) of 20.5%. The structure is similar in overall shape and fold to the previously determined subtype B, C and F PRs. The major differences lie in the conformation of the flap region. The flaps in the crystal structures of the unbound subtype B and C PRs, which were crystallized in tetragonal space groups, are either semi-open or wide open. In the present structure of subtype A PR the flaps are found in the closed position, a conformation that would be more anticipated in the structure of HIV protease complexed with an inhibitor. The amino-acid differences between the subtypes and their respective crystal space groups are discussed in terms of the differences in the flap conformations.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL 32610, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 protease
A, B
99Human immunodeficiency virus type 1 group M subtype AMutation(s): 0 
Gene Names: gag-pol
Find proteins for P04588 (Human immunodeficiency virus type 1 group M subtype A)
Go to UniProtKB:  P04588
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.205 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 62.207α = 90.00
b = 62.207β = 90.00
c = 82.470γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-03-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2012-03-28
    Type: Database references