3ICX

Crystal structure of Sulfolobus solfataricus Nop5 (135-380)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.261 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Structural organization of box C/D RNA-guided RNA methyltransferase.

Ye, K., Jia, R., Lin, J., Ju, M., Peng, J., Xu, A., Zhang, L.

(2009) Proc.Natl.Acad.Sci.USA 106: 13808-13813

  • DOI: 10.1073/pnas.0905128106
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Box C/D guide RNAs are abundant noncoding RNAs that primarily function to direct the 2'-O-methylation of specific nucleotides by base-pairing with substrate RNAs. In archaea, a bipartite C/D RNA assembles with L7Ae, Nop5, and the methyltransferase fi ...

    Box C/D guide RNAs are abundant noncoding RNAs that primarily function to direct the 2'-O-methylation of specific nucleotides by base-pairing with substrate RNAs. In archaea, a bipartite C/D RNA assembles with L7Ae, Nop5, and the methyltransferase fibrillarin into a modification enzyme with unique substrate specificity. Here, we determined the crystal structure of an archaeal C/D RNA-protein complex (RNP) composed of all 3 core proteins and an engineered half-guide RNA at 4 A resolution, as well as 2 protein substructures at higher resolution. The RNP structure reveals that the C-terminal domains of Nop5 in the dimeric complex provide symmetric anchoring sites for 2 L7Ae-associated kink-turn motifs of the C/D RNA. A prominent protrusion in Nop5 seems to be important for guide RNA organization and function and for discriminating the structurally related U4 snRNA. Multiple conformations of the N-terminal domain of Nop5 and its associated fibrillarin in different structures indicate the inherent flexibility of the catalytic module, suggesting that a swinging motion of the catalytic module is part of the enzyme mechanism. We also built a model of a native C/D RNP with substrate and fibrillarin in an active conformation. Our results provide insight into the overall organization and mechanism of action of C/D RNA-guided RNA methyltransferases.

    Organizational Affiliation: 

    National Institute of Biological Sciences, Beijing 102206, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Pre mRNA splicing protein
A, B, C
255Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)Mutation(s): 0 
Find proteins for Q97ZH3 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Go to UniProtKB:  Q97ZH3
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.261 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 153.645α = 90.00
b = 122.126β = 107.67
c = 71.786γ = 90.00
Software Package:
Software NamePurpose
MAR345data collection
DENZOdata reduction
REFMACrefinement
SCALEPACKdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2009-07-19 
  • Released Date: 2009-08-25 
  • Deposition Author(s): Ye, K.

Revision History 

  • Version 1.0: 2009-08-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description