1KSK

STRUCTURE OF RSUA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structure of the 16S rRNA pseudouridine synthase RsuA bound to uracil and UMP.

Sivaraman, J.Sauve, V.Larocque, R.Stura, E.A.Schrag, J.D.Cygler, M.Matte, A.

(2002) Nat.Struct.Mol.Biol. 9: 353-358

  • DOI: 10.1038/nsb788
  • Primary Citation of Related Structures:  1KSL, 1KSV

  • PubMed Abstract: 
  • In Escherichia coli, the pseudouridine synthase RsuA catalyzes formation of pseudouridine (psi) at position 516 in 16S rRNA during assembly of the 30S ribosomal subunit. We have determined the crystal structure of RsuA bound to uracil at 2.0 A resolu ...

    In Escherichia coli, the pseudouridine synthase RsuA catalyzes formation of pseudouridine (psi) at position 516 in 16S rRNA during assembly of the 30S ribosomal subunit. We have determined the crystal structure of RsuA bound to uracil at 2.0 A resolution and to uridine 5'-monophosphate (UMP) at 2.65 A resolution. RsuA consists of an N-terminal domain connected by an extended linker to the central and C-terminal domains. Uracil and UMP bind in a cleft between the central and C-terminal domains near the catalytic residue Asp 102. The N-terminal domain shows structural similarity to the ribosomal protein S4. Despite only 15% amino acid identity, the other two domains are structurally similar to those of the tRNA-specific psi-synthase TruA, including the position of the catalytic Asp. Our results suggest that all four families of pseudouridine synthases share the same fold of their catalytic domain(s) and uracil-binding site.


    Organizational Affiliation

    Biotechnology Research Institute, 6100 Royalmount Avenue, Montreal, Quebec H4P 2R2, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL SMALL SUBUNIT PSEUDOURIDINE SYNTHASE A
A
234Escherichia coli (strain K12)Gene Names: rsuA (yejD)
EC: 5.4.99.19
Find proteins for P0AA43 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AA43
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
URA
Query on URA

Download SDF File 
Download CCD File 
A
URACIL
C4 H4 N2 O2
ISAKRJDGNUQOIC-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.217 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 48.771α = 90.00
b = 149.220β = 90.00
c = 35.200γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SOLVEphasing
Adxvdata processing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-04-24
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description
  • Version 1.4: 2018-01-31
    Type: Experimental preparation