4E43

HIV protease (PR) dimer with acetate in exo site and peptide in active site


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Fragment-based screen against HIV protease.

Perryman, A.L.Zhang, Q.Soutter, H.H.Rosenfeld, R.McRee, D.E.Olson, A.J.Elder, J.E.Stout, C.D.

(2010) Chem Biol Drug Des 75: 257-268

  • DOI: https://doi.org/10.1111/j.1747-0285.2009.00943.x
  • Primary Citation of Related Structures:  
    3KF0, 3KFN, 3KFP, 3KFR, 3KFS, 4E43

  • PubMed Abstract: 

    We have employed a fragment-based screen against wild-type (NL4-3) HIV protease (PR) using the Active Sight fragment library and X-ray crystallography. The experiments reveal two new binding sites for small molecules. PR was co-crystallized with fragments, or crystals were soaked in fragment solutions, using five crystal forms, and 378 data sets were collected to 2.3-1.3 A resolution. Fragment binding induces a distinct conformation and specific crystal form of TL-3 inhibited PR during co-crystallization. One fragment, 2-methylcyclohexanol, binds in the 'exo site' adjacent to the Gly(16)Gly(17)Gln(18)loop where the amide of Gly(17)is a specific hydrogen bond donor, and hydrophobic contacts occur with the side chains of Lys(14)and Leu(63). Another fragment, indole-6-carboxylic acid, binds on the 'outside/top of the flap' via hydrophobic contacts with Trp(42), Pro(44), Met(46), and Lys(55), a hydrogen bond with Val(56), and a salt-bridge with Arg(57). 2-acetyl-benzothiophene also binds at this site. This study is the first fragment-based crystallographic screen against HIV PR, and the first time that fragments were screened against an inhibitor-bound drug target to search for compounds that both bind to novel sites and stabilize the inhibited conformation of the target.


  • Organizational Affiliation

    Department of Molecular Biology, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA 92037, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protease
A, B
99Human immunodeficiency virus 1Mutation(s): 1 
Gene Names: POL
UniProt
Find proteins for P12499 (Human immunodeficiency virus type 1 group M subtype D (isolate Z2/CDC-Z34))
Explore P12499 
Go to UniProtKB:  P12499
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP12499
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Random peptide6unidentifiedMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
G [auth A]
H [auth A]
I [auth A]
J [auth A]
N [auth B]
G [auth A],
H [auth A],
I [auth A],
J [auth A],
N [auth B],
O [auth B],
P [auth B],
Q [auth B],
R [auth B],
S [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
BME
Query on BME

Download Ideal Coordinates CCD File 
M [auth B]BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
DMS
Query on DMS

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
K [auth B],
L [auth B]
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
ACT
Query on ACT

Download Ideal Coordinates CCD File 
F [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.29α = 90
b = 86.259β = 90
c = 46.299γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 2012-05-30 
  • Deposition Author(s): Stout, C.D.
  • This entry supersedes: 3KF1

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-30
    Type: Initial release
  • Version 1.1: 2012-06-06
    Changes: Other
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations