1G6L

1.9A CRYSTAL STRUCTURE OF TETHERED HIV-1 PROTEASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

1.9 A x-ray study shows closed flap conformation in crystals of tethered HIV-1 PR.

Pillai, B.Kannan, K.K.Hosur, M.V.

(2001) Proteins 43: 57-564

  • DOI: 10.1002/1097-0134(20010401)43:1<57::aid-prot1017>3.0.co;2-d
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Three-dimensional structure of an asymmetrically mutated (C95M) tethered human immunodeficiency virus type 1 protease enzyme (HIV-1 PR) has been determined in an unliganded form using X-ray diffraction data to 1.9 A resolution. The structure, refined ...

    Three-dimensional structure of an asymmetrically mutated (C95M) tethered human immunodeficiency virus type 1 protease enzyme (HIV-1 PR) has been determined in an unliganded form using X-ray diffraction data to 1.9 A resolution. The structure, refined using X-PLOR to an R factor of 19.5%, is unexpectedly similar to the ligand-bound native enzyme, rather than to the ligand-free native enzyme. In particular, the two flaps in the tethered dimer are in a closed configuration. The environments around M95 and C1095 are identical, showing no structural effect of this asymmetric mutation at position 95. Oxidation of Cys1095 has been observed for the first time. There is one well-defined water molecule that hydrogen bonds to both carboxyl groups of the essential aspartic acids in the active site. Proteins 2001;43:57-64.


    Organizational Affiliation

    Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 PROTEASEA203Human immunodeficiency virus 1Mutation(s): 1 
EC: 3.4.23.16 (PDB Primary Data), 2.7.7.49 (UniProt), 2.7.7.7 (UniProt), 3.1.26.13 (UniProt), 3.1.13.2 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04585 
Go to UniProtKB:  P04585
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.195 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.15α = 90
b = 63.15β = 90
c = 83.61γ = 120
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-08-09
    Changes: Refinement description, Source and taxonomy