3I4U

Crystal Structure Analysis of a helicase associated domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural analysis of the C-terminal domain of the spliceosomal helicase Prp22

Kudlinzki, D.Schmitt, A.Christian, H.Ficner, R.

(2012) Biol Chem 393: 1131-1140

  • DOI: 10.1515/hsz-2012-0158
  • Primary Citation of Related Structures:  
    3I4U

  • PubMed Abstract: 
  • Splicing of pre-mRNA requires the activity of at least eight different DEAD/H-box proteins that are involved in distinct steps of the splicing process. These proteins are driving the spliceosomal machinery by ATP-dependent unwinding of dsRNA and/or disru ...

    Splicing of pre-mRNA requires the activity of at least eight different DEAD/H-box proteins that are involved in distinct steps of the splicing process. These proteins are driving the spliceosomal machinery by ATP-dependent unwinding of dsRNA and/or disrupting protein-RNA complexes. The spliceosomal DEAH-box proteins Prp2, Prp16, Prp22 and Prp43 share homologous C-terminal domains (CTD). We have determined the crystal structure of the CTD of human Prp22 by means of MAD. The fold of the human Prp22-CTD closely resembles that of the yeast Prp43-CTD. The similarity of these helicase-associated CTDs to the winged-helix and ratchet domains of the DNA helicase Hel308 suggests an analogous function in dsRNA binding and unwinding. Here, we also demonstrate that the CTD has a significant impact on the ATPase activity of yPrp22 in vitro. Homology modeling of the CTDs of hPrp2, hPrp16 and hPrp43 suggests that the CTDs of spliceosomal helicases contain conserved positively charged patches on their surfaces representing a common RNA-binding surface as well as divergent regions most likely mediating specific interactions with different proteins of the spliceosome.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-dependent RNA helicase DHX8 A270Homo sapiensMutation(s): 0 
Gene Names: DHX8DDX8
EC: 3.6.1 (PDB Primary Data), 3.6.4.13 (UniProt)
Find proteins for Q14562 (Homo sapiens)
Explore Q14562 
Go to UniProtKB:  Q14562
NIH Common Fund Data Resources
PHAROS:  Q14562
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.854α = 90
b = 78.854β = 90
c = 88.793γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SHARPphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-07-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-11-21
    Changes: Database references