4B8T

RNA BINDING PROTEIN Solution structure of the third KH domain of KSRP in complex with the G-rich target sequence.


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 1.4 of the entry. See complete history

Literature

Noncanonical G Recognition Mediates Ksrp Regulation of Let-7 Biogenesis

Nicastro, G.Garcia-Mayoral, M.F.Hollingworth, D.Kelly, G.Martin, S.R.Briata, P.Gherzi, R.Ramos, A.

(2012) Nat.Struct.Mol.Biol. 19: 1282

  • DOI: 10.1038/nsmb.2427

  • PubMed Abstract: 
  • Let-7 is an important tumor-suppressive microRNA (miRNA) that acts as an on-off switch for cellular differentiation and regulates the expression of a set of human oncogenes. Binding of the human KSRP protein to let-7 miRNA precursors positively regul ...

    Let-7 is an important tumor-suppressive microRNA (miRNA) that acts as an on-off switch for cellular differentiation and regulates the expression of a set of human oncogenes. Binding of the human KSRP protein to let-7 miRNA precursors positively regulates their processing to mature let-7, thereby contributing to control of cell proliferation, apoptosis and differentiation. Here we analyze the molecular basis for KSRP-let-7 precursor selectivity and show how the third KH domain of the protein recognizes a G-rich sequence in the pre-let-7 terminal loop and dominates the interaction. The structure of the KH3-RNA complex explains the protein recognition of this noncanonical KH target sequence, and we demonstrate that the specificity of this binding is crucial for the functional interaction between the protein and the miRNA precursor.


    Related Citations: 
    • The Structure of the C-Terminal Kh Domains of Ksrp Reveals a Noncanonical Motif Important for Mrna Degradation.
      Garcia-Mayoral, M.F.,Hollingworth, D.,Masino, L.,Diaz-Moreno, I.,Kelly, G.,Gherzi, R.,Chou, C.,Chen, C.,Ramos, A.
      (2007) Structure 15: 485


    Organizational Affiliation

    Molecular Structure Division, Medical Research Council National Institute for Medical Research, London, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KH-TYPE SPLICING REGULATORY PROTEIN
A
106Homo sapiensMutation(s): 0 
Gene Names: KHSRP (FUBP2)
Find proteins for Q92945 (Homo sapiens)
Go to Gene View: KHSRP
Go to UniProtKB:  Q92945
Entity ID: 2
MoleculeChainsLengthOrganism
5'-R(*AP*GP*GP*GP*UP)-3'B5synthetic construct
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 4B8T Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-11-07
    Type: Initial release
  • Version 1.1: 2012-11-21
    Type: Database references
  • Version 1.2: 2012-11-28
    Type: Other, Structure summary
  • Version 1.3: 2012-12-05
    Type: Atomic model
  • Version 1.4: 2013-01-16
    Type: Database references