4A90

Crystal structure of mouse SAP18 residues 1-143


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.215 

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:  

  • 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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HISTONE DEACETYLASE COMPLEX SUBUNIT SAP18
A, B
143Mus musculusMutation(s): 0 
Gene Names: Sap18
Find proteins for O55128 (Mus musculus)
Go to UniProtKB:  O55128
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.215 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 95.420α = 90.00
b = 65.140β = 119.40
c = 61.610γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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