4A8X

Structure of the core ASAP complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The Structure of the Asap Core Complex Reveals the Existence of a Pinin-Containing Psap Complex

Murachelli, A.G.Ebert, J.Basquin, C.Le Hir, H.Conti, E.

(2012) Nat Struct Mol Biol 19: 378

  • DOI: 10.1038/nsmb.2242
  • Primary Citation of Related Structures:  
    4A6Q, 4A8X, 4A90

  • PubMed Abstract: 
  • The ASAP complex interacts with the exon-junction complex (EJC), a messenger ribonucleoprotein complex involved in post-transcriptional regulation. The three ASAP subunits (Acinus, RNPS1 and SAP18) have been individually implicated in transcriptional ...

    The ASAP complex interacts with the exon-junction complex (EJC), a messenger ribonucleoprotein complex involved in post-transcriptional regulation. The three ASAP subunits (Acinus, RNPS1 and SAP18) have been individually implicated in transcriptional regulation, pre-mRNA splicing and mRNA quality control. To shed light on the basis for and consequences of ASAP's interaction with the EJC, we have determined the 1.9-Å resolution structure of a eukaryotic ASAP core complex. The RNA-recognition motif of RNPS1 binds to a conserved motif of Acinus with a recognition mode similar to that observed in splicing U2AF proteins. The Acinus-RNPS1 platform recruits the ubiquitin-like domain of SAP18, forming a ternary complex that has both RNA- and protein-binding properties. Unexpectedly, our structural analysis identified an Acinus-like motif in Pinin, another EJC-associated splicing factor. We show that Pinin physically interacts with RNPS1 and SAP18, forming an alternative ternary complex, PSAP.


    Organizational Affiliation

    Max Planck Institute of Biochemistry, Department of Structural Cell Biology, Martinsried, Germany.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA-BINDING PROTEIN WITH SERINE-RICH DOMAIN 1A88Homo sapiensMutation(s): 0 
Gene Names: RNPS1LDC2
Find proteins for Q15287 (Homo sapiens)
Explore Q15287 
Go to UniProtKB:  Q15287
NIH Common Fund Data Resources
PHAROS  Q15287
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HOOK-LIKE, ISOFORM AB40Drosophila melanogasterMutation(s): 0 
Gene Names: 
Find proteins for Q9VJ12 (Drosophila melanogaster)
Explore Q9VJ12 
Go to UniProtKB:  Q9VJ12
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
HISTONE DEACETYLASE COMPLEX SUBUNIT SAP18C130Mus musculusMutation(s): 0 
Gene Names: Sap18
Find proteins for O55128 (Mus musculus)
Explore O55128 
Go to UniProtKB:  O55128
NIH Common Fund Data Resources
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.868α = 90
b = 73.331β = 110.99
c = 50.754γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-03-07
    Type: Initial release
  • Version 1.1: 2012-04-18
    Changes: Other