Solution structure of the central RRM 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 1.4 of the entry. See complete history


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: https://doi.org/10.1038/nsmb747
  • Primary Citation of Related Structures:  
    1S79, 1S7A

  • 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 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.

  • Organizational Affiliation

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

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lupus La protein103Homo sapiensMutation(s): 0 
Gene Names: SSB
UniProt & NIH Common Fund Data Resources
Find proteins for P05455 (Homo sapiens)
Explore P05455 
Go to UniProtKB:  P05455
PHAROS:  P05455
GTEx:  ENSG00000138385 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05455
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-04-06
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-03-02
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection