1SYX

The crystal structure of a binary U5 snRNP complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.345 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for the bifunctionality of the U5 snRNP 52K protein (CD2BP2).

Nielsen, T.K.Liu, S.Luhrmann, R.Ficner, R.

(2007) J.Mol.Biol. 369: 902-908

  • DOI: 10.1016/j.jmb.2007.03.077

  • PubMed Abstract: 
  • The bifunctional protein U5-52K is associated with the spliceosomal 20 S U5 snRNP, and it also plays a role in immune response as CD2 receptor binding protein 2 (CD2BP2). U5-52K binds to the CD2 receptor via its GYF-domain specifically recognizing a ...

    The bifunctional protein U5-52K is associated with the spliceosomal 20 S U5 snRNP, and it also plays a role in immune response as CD2 receptor binding protein 2 (CD2BP2). U5-52K binds to the CD2 receptor via its GYF-domain specifically recognizing a proline-rich motif on the cytoplasmic surface of the receptor. The GYF-domain is also mediating the interaction of the proteins U5-52K and U5-15K within the spliceosomal U5 snRNP. Here we report the crystal structure of the complex of GYF-domain and U5-15K protein revealing the structural basis for the bifunctionality of the U5-52K protein. The complex structure unveils novel interaction sites on both proteins, as neither the polyproline-binding site of the GYF-domain nor the common ligand-binding cleft of thioredoxin-like proteins, to which U5-15K belongs, are involved in the interaction of U5-15K and U5-52K.


    Organizational Affiliation

    Abteilung für Molekulare Strukturbiologie, Institut für Mikrobiologie und Genetik, Georg-August-Universität Göttingen, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Spliceosomal U5 snRNP-specific 15 kDa protein
A, C, E
142Homo sapiensMutation(s): 0 
Gene Names: TXNL4A (DIM1, TXNL4)
Find proteins for P83876 (Homo sapiens)
Go to Gene View: TXNL4A
Go to UniProtKB:  P83876
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CD2 antigen cytoplasmic tail-binding protein 2
B, D, F
86Homo sapiensMutation(s): 0 
Gene Names: CD2BP2 (KIAA1178)
Find proteins for O95400 (Homo sapiens)
Go to Gene View: CD2BP2
Go to UniProtKB:  O95400
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.345 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.216 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 135.726α = 90.00
b = 75.913β = 94.27
c = 77.027γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
MOLREPphasing
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-10-18
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance