2XNW

XPT-PBUX C74U RIBOSWITCH FROM B. SUBTILIS BOUND TO A TRIAZOLO- TRIAZOLE-DIAMINE LIGAND IDENTIFIED BY VIRTUAL SCREENING


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Novel ligands for a purine riboswitch discovered by RNA-ligand docking.

Daldrop, P.Reyes, F.E.Robinson, D.A.Hammond, C.M.Lilley, D.M.Batey, R.T.Brenk, R.

(2011) Chem Biol 18: 324-335

  • DOI: https://doi.org/10.1016/j.chembiol.2010.12.020
  • Primary Citation of Related Structures:  
    2XNW, 2XNZ, 2XO0, 2XO1

  • PubMed Abstract: 

    The increasing number of RNA crystal structures enables a structure-based approach to the discovery of new RNA-binding ligands. To develop the poorly explored area of RNA-ligand docking, we have conducted a virtual screening exercise for a purine riboswitch to probe the strengths and weaknesses of RNA-ligand docking. Using a standard protein-ligand docking program with only minor modifications, four new ligands with binding affinities in the micromolar range were identified, including two compounds based on molecular scaffolds not resembling known ligands. RNA-ligand docking performed comparably to protein-ligand docking indicating that this approach is a promising option to explore the wealth of RNA structures for structure-based ligand design.


  • Organizational Affiliation

    Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, UK.


Macromolecules
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains LengthOrganismImage
GUANINE RIBOSWITCH67Bacillus subtilis
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NCO
Query on NCO

Download Ideal Coordinates CCD File 
B [auth A]
C [auth A]
D [auth A]
E [auth A]
F [auth A]
B [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A]
COBALT HEXAMMINE(III)
Co H18 N6
DYLMFCCYOUSRTK-UHFFFAOYSA-N
ZZR
Query on ZZR

Download Ideal Coordinates CCD File 
J [auth A]3,6-diamino-1,5-dihydro[1,2,4]triazolo[4,3-b][1,2,4]triazol-4-ium
C3 H6 N7
JFMHNXXJHXPFLE-UHFFFAOYSA-O
ACT
Query on ACT

Download Ideal Coordinates CCD File 
I [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
K
Query on K

Download Ideal Coordinates CCD File 
K [auth A]POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
ZZR PDBBind:  2XNW Kd: 3.70e+5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.895α = 90
b = 35.38β = 92.19
c = 42.197γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-06
    Type: Initial release
  • Version 1.1: 2018-06-06
    Changes: Advisory, Data collection, Database references
  • Version 1.2: 2023-12-20
    Changes: Advisory, Data collection, Database references, Derived calculations, Other, Refinement description