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 1.1 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: https://doi.org/10.1007/s12104-017-9793-0
  • Primary Citation of Related Structures:  
    6T51

  • 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 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.


Macromolecules

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Entity ID: 1
MoleculeChains LengthOrganismImage
KRAS22RT22Homo sapiens
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-10-30
    Type: Initial release
  • Version 1.1: 2020-01-29
    Changes: Database references