6T51

NMR structure of KRAS22RT G-quadruplex forming within KRAS promoter region at physological temperature


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 750 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

1H,13C, and15N chemical shift assignments of a G-quadruplex forming sequence within the KRAS proto-oncogene promoter region.

Marquevielle, J.Kumar, M.V.V.Mergny, J.L.Salgado, G.F.

(2018) Biomol.Nmr Assign. 12: 123-127

  • DOI: 10.1007/s12104-017-9793-0

  • PubMed Abstract: 
  • Single stranded guanine rich DNA (or RNA) sequences adopt noncanonical secondary structures called G-quadruplexes (G4). Functionally, quadruplexes control gene transcription and regulate activities such as replication, gene recombination or alternati ...

    Single stranded guanine rich DNA (or RNA) sequences adopt noncanonical secondary structures called G-quadruplexes (G4). Functionally, quadruplexes control gene transcription and regulate activities such as replication, gene recombination or alternative splicing. Hence they are potential targets for cancer, neuronal, and viral related diseases. KRAS is one of the most mutated oncogenes in the genome of cancer cells and contains a nuclease hypersensitive element (NHE) sequence capable of forming G-quadruplexes via its six runs of guanines. In our work, we are interested in the NMR structure of the major G4 scaffold formed in the KRAS NHE region with a mutated sequence of 22 residues. Here, we report 1 H, 13 C and 15 N chemical shift assignments the G4 formed within KRAS22RT sequence.


    Organizational Affiliation

    ARNA Laboratory, European Institute of Chemistry and Biology (IECB), Université de Bordeaux, Inserm U1212 - CNRS UMR 5320, 2, rue Robert Escarpit, 33607, Pessac, France.,ARNA Laboratory, European Institute of Chemistry and Biology (IECB), Université de Bordeaux, Inserm U1212 - CNRS UMR 5320, 2, rue Robert Escarpit, 33607, Pessac, France. g.salgado@iecb.u-bordeaux.fr.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
KRAS22RTA22Homo sapiens
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 750 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-10-30
    Type: Initial release