1C0T

CRYSTAL STRUCTURE OF HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH BM+21.1326


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.208 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Crystallographic analysis of the binding modes of thiazoloisoindolinone non-nucleoside inhibitors to HIV-1 reverse transcriptase and comparison with modeling studies.

Ren, J.Esnouf, R.M.Hopkins, A.L.Stuart, D.I.Stammers, D.K.

(1999) J Med Chem 42: 3845-3851

  • DOI: https://doi.org/10.1021/jm990275t
  • Primary Citation of Related Structures:  
    1C0T, 1C0U

  • PubMed Abstract: 

    We have determined the crystal structures of thiazoloisoindolinone non-nucleoside inhibitors in complex with HIV-1 reverse transcriptase to high-resolution limits of 2.7 A (BM +21.1326) and 2. 52 A (BM +50.0934). We find that the binding modes of this series of inhibitors closely resemble that of "two-ring" non-nucleoside reverse transcriptase inhibitors. The structures allow rationalization of stereochemical requirements, structure-activity data, and drug resistance data. Comparisons with our previous structures suggest modifications to the inhibitors that might improve resilience to drug-resistant mutant forms of reverse transcriptase. Comparison with earlier modeling studies reveals that the predicted overlap of thiazoloisoindolinones with TIBO was largely correct, while that with nevirapine was significantly different.


  • Organizational Affiliation

    Laboratory of Molecular Biophysics, Rex Richards Building, South Parks Road, Oxford OX1 3QU, U.K..


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HIV-1 REVERSE TRANSCRIPTASE (A-CHAIN)560Human immunodeficiency virus 1Mutation(s): 0 
EC: 2.7.7.49
UniProt
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04585 
Go to UniProtKB:  P04585
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04585
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HIV-1 REVERSE TRANSCRIPTASE (B-CHAIN)440Human immunodeficiency virus 1Mutation(s): 0 
EC: 2.7.7.49
UniProt
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04585 
Go to UniProtKB:  P04585
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04585
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
BM1
Query on BM1

Download Ideal Coordinates CCD File 
C [auth A](R)-(+)9B-(3-METHYL)PHENYL-2,3-DIHYDROTHIAZOLO[2,3-A]ISOINDOL-5(9BH)-ONE
C17 H15 N O S
FQVDJZWFSZSGGA-QGZVFWFLSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
CSD
Query on CSD
A
L-PEPTIDE LINKINGC3 H7 N O4 SCYS
Binding Affinity Annotations 
IDSourceBinding Affinity
BM1 BindingDB:  1C0T IC50: min: 30, max: 35 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.208 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.1α = 90
b = 112.7β = 90
c = 75.1γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-07-19
    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: 2014-11-12
    Changes: Non-polymer description