4G8L

Active state of intact sensor domain of human RNase L with 2-5A bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Innate Immune Messenger 2-5A Tethers Human RNase L into Active High-Order Complexes.

Han, Y.Whitney, G.Donovan, J.Korennykh, A.

(2012) Cell Rep 2: 902-913

  • DOI: 10.1016/j.celrep.2012.09.004
  • Primary Citation of Related Structures:  4G8K

  • PubMed Abstract: 
  • 2',5'-linked oligoadenylates (2-5As) serve as conserved messengers of pathogen presence in the mammalian innate immune system. 2-5As induce self-association and activation of RNase L, which cleaves cytosolic RNA and promotes the production of interfe ...

    2',5'-linked oligoadenylates (2-5As) serve as conserved messengers of pathogen presence in the mammalian innate immune system. 2-5As induce self-association and activation of RNase L, which cleaves cytosolic RNA and promotes the production of interferons (IFNs) and cytokines driven by the transcription factors IRF-3 and NF-κB. We report that human RNase L is activated by forming high-order complexes, reminiscent of the mode of activation of the phylogenetically related transmembrane kinase/RNase Ire1 in the unfolded protein response. We describe crystal structures determined at 2.4 Å and 2.8 Å resolution, which show that two molecules of 2-5A at a time tether RNase L monomers via the ankyrin-repeat (ANK) domain. Each ANK domain harbors two distinct sites for 2-5A recognition that reside 50 Å apart. These data reveal a function for the ANK domain as a 2-5A-sensing homo-oligomerization device and describe a nonlinear, ultrasensitive regulation in the 2-5A/RNase L system poised for amplification of the IFN response.


    Organizational Affiliation

    Department of Molecular Biology, Princeton University, 216 Schultz Laboratory, Princeton, NJ 08540, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
2-5A-dependent ribonuclease
A, B, C, D
337Homo sapiensGene Names: RNASEL (RNS4)
EC: 3.1.26.-
Find proteins for Q05823 (Homo sapiens)
Go to Gene View: RNASEL
Go to UniProtKB:  Q05823
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
25A
Query on 25A

Download SDF File 
Download CCD File 
A, B, C, D
5'-O-MONOPHOSPHORYLADENYLYL(2'->5')ADENYLYL(2'->5')ADENOSINE
C30 H38 N15 O19 P3
SIIZPVYVXNXXQG-UQTMIEBXSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
25AEC50: 0.2 nM (100) BINDINGDB
25AIC50: 1.1 - 20 nM (100) BINDINGDB
25AKd: 10 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.228 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 62.980α = 90.00
b = 164.110β = 100.20
c = 86.220γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata scaling
SCALAdata scaling
CBASSdata collection
PHENIXrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-31
    Type: Initial release
  • Version 1.1: 2012-11-14
    Type: Database references