4KIT

Crystal structure of human Brr2 in complex with the Prp8 Jab1/MPN domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.598 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Inhibition of RNA helicase Brr2 by the C-terminal tail of the spliceosomal protein Prp8.

Mozaffari-Jovin, S.Wandersleben, T.Santos, K.F.Will, C.L.Luhrmann, R.Wahl, M.C.

(2013) Science 341: 80-84

  • DOI: 10.1126/science.1237515

  • PubMed Abstract: 
  • The Ski2-like RNA helicase Brr2 is a core component of the spliceosome that must be tightly regulated to ensure correct timing of spliceosome activation. Little is known about mechanisms of regulation of Ski2-like helicases by protein cofactors. Here ...

    The Ski2-like RNA helicase Brr2 is a core component of the spliceosome that must be tightly regulated to ensure correct timing of spliceosome activation. Little is known about mechanisms of regulation of Ski2-like helicases by protein cofactors. Here we show by crystal structure and biochemical analyses that the Prp8 protein, a major regulator of the spliceosome, can insert its C-terminal tail into Brr2's RNA-binding tunnel, thereby intermittently blocking Brr2's RNA-binding, adenosine triphosphatase, and U4/U6 unwinding activities. Inefficient Brr2 repression is the only recognizable phenotype associated with certain retinitis pigmentosa-linked Prp8 mutations that map to its C-terminal tail. Our data show how a Ski2-like RNA helicase can be reversibly inhibited by a protein cofactor that directly competes with RNA substrate binding.


    Organizational Affiliation

    Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
U5 small nuclear ribonucleoprotein 200 kDa helicase
B
1739Homo sapiensMutation(s): 0 
Gene Names: SNRNP200 (ASCC3L1, HELIC2, KIAA0788)
EC: 3.6.4.13
Find proteins for O75643 (Homo sapiens)
Go to Gene View: SNRNP200
Go to UniProtKB:  O75643
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Pre-mRNA-processing-splicing factor 8
C
278Homo sapiensMutation(s): 0 
Gene Names: PRPF8 (PRPC8)
Find proteins for Q6P2Q9 (Homo sapiens)
Go to Gene View: PRPF8
Go to UniProtKB:  Q6P2Q9
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
B
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.598 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.197 
  • Space Group: P 42 21 2
Unit Cell:
Length (Å)Angle (°)
a = 240.002α = 90.00
b = 240.002β = 90.00
c = 201.089γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
XDSdata reduction
HKL-2000data collection
PHENIXrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-06-05
    Type: Initial release
  • Version 1.1: 2013-07-24
    Type: Database references