Crystal structure of yeast RNA splicing factor Snu13p

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 

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Analysis of pre-mRNA and pre-rRNA processing factor Snu13p structure and mutants.

Dobbyn, H.C.McEwan, P.A.Krause, A.Novak-Frazer, L.Bella, J.O'Keefe, R.T.

(2007) Biochem Biophys Res Commun 360: 857-862

  • DOI: https://doi.org/10.1016/j.bbrc.2007.06.163
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Snu13p is a Saccharomyces cerevisiae protein essential for pre-messenger RNA splicing and pre-ribosomal RNA processing. Snu13p binds U4 snRNA of the spliceosome and box C/D snoRNAs of the pre-ribosomal RNA processing machinery to induce assembly of each ribonucleoprotein complex. Here, we present structural and biochemical analysis of Snu13p. The crystal structure of Snu13p reveals a region of the protein which could be important for protein interaction during ribonucleoprotein assembly. Using the structure of Snu13p we have designed the first temperature-sensitive mutants in Snu13p, L67W and I102A. Wild-type and mutant Snu13p proteins were assayed for binding to U4 snRNA and U3 snoRNA. Both temperature-sensitive mutants displayed significantly reduced RNA binding compared to wild-type protein. As the temperature-sensitive mutations are not in the known RNA binding region of Snu13p this indicates that these mutants indirectly influence the RNA binding properties of Snu13p. This work provides insight into Snu13p function during ribonucleoprotein assembly.

  • Organizational Affiliation

    School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, Nottingham NG7 2RD, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NHP2/L7aE family protein YEL026W134Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P39990 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P39990 
Go to UniProtKB:  P39990
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP39990
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on MG

Download Ideal Coordinates CCD File 
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.33α = 90
b = 70.33β = 90
c = 53.303γ = 120
Software Package:
Software NamePurpose
CrystalCleardata reduction
d*TREKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-10-03
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-23
    Changes: Data collection, Database references, Derived calculations, Refinement description