3PLU

Structure of Hub-1 protein in complex with Snu66 peptide (HINDI)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Role of the ubiquitin-like protein Hub1 in splice-site usage and alternative splicing.

Mishra, S.K.Ammon, T.Popowicz, G.M.Krajewski, M.Nagel, R.J.Ares, M.Holak, T.A.Jentsch, S.

(2011) Nature 474: 173-178

  • DOI: 10.1038/nature10143
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Alternative splicing of pre-messenger RNAs diversifies gene products in eukaryotes and is guided by factors that enable spliceosomes to recognize particular splice sites. Here we report that alternative splicing of Saccharomyces cerevisiae SRC1 pre-m ...

    Alternative splicing of pre-messenger RNAs diversifies gene products in eukaryotes and is guided by factors that enable spliceosomes to recognize particular splice sites. Here we report that alternative splicing of Saccharomyces cerevisiae SRC1 pre-mRNA is promoted by the conserved ubiquitin-like protein Hub1. Structural and biochemical data show that Hub1 binds non-covalently to a conserved element termed HIND, which is present in the spliceosomal protein Snu66 in yeast and mammals, and Prp38 in plants. Hub1 binding mildly alters spliceosomal protein interactions and barely affects general splicing in S. cerevisiae. However, spliceosomes that lack Hub1, or are defective in Hub1-HIND interaction, cannot use certain non-canonical 5' splice sites and are defective in alternative SRC1 splicing. Hub1 confers alternative splicing not only when bound to HIND, but also when experimentally fused to Snu66, Prp38, or even the core splicing factor Prp8. Our study indicates a novel mechanism for splice site utilization that is guided by non-covalent modification of the spliceosome by an unconventional ubiquitin-like modifier.


    Organizational Affiliation

    Department of Molecular Cell Biology, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-like modifier HUB1
A, B
93Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: HUB1
Find proteins for Q6Q546 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q6Q546
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
66 kDa U4/U6.U5 small nuclear ribonucleoprotein component
C, D
19Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SNU66
Find proteins for Q12420 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q12420
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.185 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 35.230α = 83.44
b = 36.340β = 89.85
c = 36.780γ = 85.84
Software Package:
Software NamePurpose
MAR345dtbdata collection
REFMACrefinement
MOLREPphasing
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance