4NZ7

Steroid receptor RNA Activator (SRA) modification by the human Pseudouridine Synthase 1 (hPus1p): RNA binding, activity, and atomic model


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Steroid Receptor RNA Activator (SRA) Modification by the Human Pseudouridine Synthase 1 (hPus1p): RNA Binding, Activity, and Atomic Model

Huet, T.Miannay, F.-A.Patton, J.R.Thore, S.

(2014) Plos One 9: e94610-e94610

  • DOI: 10.1371/journal.pone.0094610
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The most abundant of the modified nucleosides, and once considered as the "fifth" nucleotide in RNA, is pseudouridine, which results from the action of pseudouridine synthases. Recently, the mammalian pseudouridine synthase 1 (hPus1p) has been report ...

    The most abundant of the modified nucleosides, and once considered as the "fifth" nucleotide in RNA, is pseudouridine, which results from the action of pseudouridine synthases. Recently, the mammalian pseudouridine synthase 1 (hPus1p) has been reported to modulate class I and class II nuclear receptor responses through its ability to modify the Steroid receptor RNA Activator (SRA). These findings highlight a new level of regulation in nuclear receptor (NR)-mediated transcriptional responses. We have characterised the RNA association and activity of the human Pus1p enzyme with its unusual SRA substrate. We validate that the minimal RNA fragment within SRA, named H7, is necessary for both the association and modification by hPus1p. Furthermore, we have determined the crystal structure of the catalytic domain of hPus1p at 2.0 Å resolution, alone and in a complex with several molecules present during crystallisation. This model shows an extended C-terminal helix specifically found in the eukaryotic protein, which may prevent the enzyme from forming a homodimer, both in the crystal lattice and in solution. Our biochemical and structural data help to understand the hPus1p active site architecture, and detail its particular requirements with regard to one of its nuclear substrates, the non-coding RNA SRA.


    Organizational Affiliation

    Department of Molecular Biology, University of Geneva, Sciences III, Geneva, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
tRNA pseudouridine synthase A, mitochondrial
A
313Homo sapiensMutation(s): 1 
Gene Names: PUS1
EC: 5.4.99.12
Find proteins for Q9Y606 (Homo sapiens)
Go to Gene View: PUS1
Go to UniProtKB:  Q9Y606
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download SDF File 
Download CCD File 
A
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
HEPES
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

Download SDF File 
Download CCD File 
A
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.183 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 39.446α = 90.00
b = 69.044β = 90.00
c = 116.797γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
DNAdata collection
XDSdata reduction
XSCALEdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-12-11 
  • Released Date: 2014-05-21 
  • Deposition Author(s): Huet, T., Thore, S.

Revision History 

  • Version 1.0: 2014-05-21
    Type: Initial release