1S7A

NMR structure of the La motif of human La protein


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

Structural analysis of cooperative RNA binding by the La motif and central RRM domain of human La protein.

Alfano, C.Sanfelice, D.Babon, J.Kelly, G.Jacks, A.Curry, S.Conte, M.R.

(2004) Nat.Struct.Mol.Biol. 11: 323-329

  • DOI: 10.1038/nsmb747
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The La protein is a conserved component of eukaryotic ribonucleoprotein complexes that binds the 3' poly(U)-rich elements of nascent RNA polymerase III (pol III) transcripts to assist folding and maturation. This specific recognition is mediated by t ...

    The La protein is a conserved component of eukaryotic ribonucleoprotein complexes that binds the 3' poly(U)-rich elements of nascent RNA polymerase III (pol III) transcripts to assist folding and maturation. This specific recognition is mediated by the N-terminal domain (NTD) of La, which comprises a La motif and an RNA recognition motif (RRM). We have determined the solution structures of both domains and show that the La motif adopts an alpha/beta fold that comprises a winged-helix motif elaborated by the insertion of three helices. Chemical shift mapping experiments show that these insertions are involved in RNA interactions. They further delineate a distinct surface patch on each domain-containing both basic and aromatic residues-that interacts with RNA and accounts for the cooperative binding of short oligonucleotides exhibited by the La NTD.


    Related Citations: 
    • Resonance assignment and secondary structure of the La motif
      Sanfelice, D.,Babon, J.,Kelly, G.,Curry, S.,Conte, M.R.
      () J.Biomol.NMR 27: 93


    Organizational Affiliation

    Biophysics Laboratories, Institute of Biomedical and Biomolecular Sciences, University of Portsmouth, St. Michael's Building, Portsmouth PO1 2DT, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lupus La protein
A
103Homo sapiensMutation(s): 0 
Gene Names: SSB
Find proteins for P05455 (Homo sapiens)
Go to Gene View: SSB
Go to UniProtKB:  P05455
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1S7A Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-04-06
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance