2PEH

Crystal structure of the UHM domain of human SPF45 in complex with SF3b155-ULM5

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.11 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.211 

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This is version 1.2 of the entry. See complete history. 


Literature

U2AF-homology motif interactions are required for alternative splicing regulation by SPF45.

Corsini, L., Bonna, S., Basquin, J., Hothorn, M., Scheffzek, K., Valcarcel, J., Sattler, M.

(2007) Nat Struct Mol Biol 14: 620-629

  • DOI: 10.1038/nsmb1260
  • Primary Citation of Related Structures:  
    2PE8, 2PEH

  • PubMed Abstract: 

    • The U2AF-homology motif (UHM) mediates protein-protein interactions between factors involved in constitutive RNA splicing. Here we report that the splicing factor SPF45 regulates alternative splicing of the apoptosis regulatory gene FAS (also called CD95) ...

    The U2AF-homology motif (UHM) mediates protein-protein interactions between factors involved in constitutive RNA splicing. Here we report that the splicing factor SPF45 regulates alternative splicing of the apoptosis regulatory gene FAS (also called CD95). The SPF45 UHM is necessary for this activity and binds UHM-ligand motifs (ULMs) present in the 3' splice site-recognizing factors U2AF65, SF1 and SF3b155. We describe a 2.1-A crystal structure of SPF45-UHM in complex with a ULM peptide from SF3b155. Features distinct from those of previously described UHM-ULM structures allowed the design of mutations in the SPF45 UHM that selectively impair binding to individual ULMs. Splicing assays using the ULM-selective SPF45 variants demonstrate that individual UHM-ULM interactions are required for FAS splicing regulation by SPF45 in vivo. Our data suggest that networks of UHM-ULM interactions are involved in regulating alternative splicing.

    Organizational Affiliation: 

    European Molecular Biology Laboratory (EMBL), Meyerhofstr. 1, D-69117 Heidelberg, Germany.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Splicing factor 45A, C [auth B]105Homo sapiensMutation(s): 0 
Gene Names: RBM17, SPF45
Find proteins for Q96I25 (Homo sapiens)
Explore Q96I25 
Go to UniProtKB:  Q96I25
NIH Common Fund Data Resources
PHAROS:  Q96I25
GTEx:  ENSG00000134453
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Splicing factor 3B subunit 1B [auth C], D10N/AMutation(s): 0 
Find proteins for O75533 (Homo sapiens)
Explore O75533 
Go to UniProtKB:  O75533
NIH Common Fund Data Resources
PHAROS:  O75533
GTEx:  ENSG00000115524
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.11 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.92α = 90
b = 66.38β = 90
c = 72.77γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MAR345dtbdata collection
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-26
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance