2JUK

guanidino neomycin B recognition of an HIV-1 RNA helix


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Guanidinoneomycin B Recognition of an HIV-1 RNA Helix.

Staple, D.W.Venditti, V.Niccolai, N.Elson-Schwab, L.Tor, Y.Butcher, S.E.

(2008) Chembiochem 9: 93-102

  • DOI: 10.1002/cbic.200700251
  • Primary Citation of Related Structures:  
    2JUK

  • PubMed Abstract: 
  • Aminoglycoside antibiotics are small-molecule drugs that bind RNA. The affinity and specificity of aminoglycoside binding to RNA can be increased through chemical modification, such as guanidinylation. Here, we report the binding of guanidinoneomycin B (GNB) to an RNA helix from the HIV-1 frameshift site ...

    Aminoglycoside antibiotics are small-molecule drugs that bind RNA. The affinity and specificity of aminoglycoside binding to RNA can be increased through chemical modification, such as guanidinylation. Here, we report the binding of guanidinoneomycin B (GNB) to an RNA helix from the HIV-1 frameshift site. The binding of GNB increases the melting temperature (T(m)) of the frameshift-site RNA by at least 10 degrees C, to a point at which a melting transition is not even observed in 2 M urea. A structure of the complex was obtained by using multidimensional heteronuclear NMR spectroscopic methods. We also used a novel paramagnetic-probe assay to identify the site of GNB binding to the surface of the RNA. GNB makes major-groove contacts to two sets of Watson-Crick bases and is in van der Waals contact with a highly structured ACAA tetraloop. Rings I and II of GNB fit into the major groove and form the binding interface with the RNA, whereas rings III and IV are exposed to the solvent and disordered. The binding of GNB causes a broadening of the major groove across the binding site.


    Organizational Affiliation

    Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Drive, Madison, WI 53706, USA.



Macromolecules
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsLengthOrganismImage
HIV-1 frameshift site RNAA 22N/A
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
G0B
Query on G0B

Download Ideal Coordinates CCD File 
B [auth A](1S,2R,3S,4R,6S)-4,6-bis{[amino(iminio)methyl]amino}-2-{[3-O-(2,6-bis{[amino(iminio)methyl]amino}-2,6-dideoxy-beta-L-glucopyranosyl)-beta-D-arabinofuranosyl]oxy}-3-hydroxycyclohexyl 2,6-bis{[amino(iminio)methyl]amino}-2,6-dideoxy-beta-L-glucopyranoside
C29 H64 N18 O13
PKRWVRYPYSMBDP-OBAWDCFYSA-T
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2JUK Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-11-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2022-03-16
    Changes: Data collection, Database references, Derived calculations