2L8H

Chemical probe bound to HIV TAR RNA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A Small-Molecule Probe Induces a Conformation in HIV TAR RNA Capable of Binding Drug-Like Fragments.

Davidson, A.Begley, D.W.Lau, C.Varani, G.

(2011) J.Mol.Biol. 410: 984-996

  • DOI: 10.1016/j.jmb.2011.03.039

  • PubMed Abstract: 
  • The HIV-1 transactivation response (TAR) element-Tat interaction is a potentially valuable target for treating HIV infection, but efforts to develop TAR-binding antiviral drugs have not yet yielded a successful candidate for clinical development. In ...

    The HIV-1 transactivation response (TAR) element-Tat interaction is a potentially valuable target for treating HIV infection, but efforts to develop TAR-binding antiviral drugs have not yet yielded a successful candidate for clinical development. In this work, we describe a novel approach toward screening fragments against RNA that uses a chemical probe to target the Tat-binding region of TAR. This probe fulfills two critical roles in the screen: by locking the RNA into a conformation capable of binding other fragments, it simultaneously allows the identification of proximal binding fragments by ligand-based NMR. Using this approach, we have discovered six novel TAR-binding fragments, three of which were docked relative to the probe-RNA structure using experimental NMR restraints. The consistent orientations of functional groups in our data-driven docked structures and common electrostatic properties across all fragment leads reveal a surprising level of selectivity by our fragment-sized screening hits. These models further suggest linking strategies for the development of higher-affinity lead compounds for the inhibition of the TAR-Tat interaction.


    Organizational Affiliation

    Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
HIV TAR RNAA29N/A
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ARG
Query on ARG

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Download CCD File 
A
ARGININE
C6 H15 N4 O2
ODKSFYDXXFIFQN-BYPYZUCNSA-O
 Ligand Interaction
L8H
Query on L8H

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Download CCD File 
A
4-methoxynaphthalen-2-amine
C11 H11 N O
SFKZPTYRENGBTJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2011-08-03
    Type: Database references