3EGB

Structure of Pellino2 FHA domain at 3.3 Angstroms resolution.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.242 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Pellino proteins contain a cryptic FHA domain that mediates interaction with phosphorylated IRAK1.

Lin, C.C.Huoh, Y.S.Schmitz, K.R.Jensen, L.E.Ferguson, K.M.

(2008) Structure 16: 1806-1816

  • DOI: 10.1016/j.str.2008.09.011
  • Primary Citation of Related Structures:  
    3EGA, 3EGB

  • PubMed Abstract: 
  • Pellino proteins are RING E3 ubiquitin ligases involved in signaling events downstream of the Toll and interleukin-1 (IL-1) receptors, key initiators of innate immune and inflammatory responses. Pellino proteins associate with and ubiquitinate proteins in these pathways, including the interleukin-1 receptor associated kinase-1 (IRAK1) ...

    Pellino proteins are RING E3 ubiquitin ligases involved in signaling events downstream of the Toll and interleukin-1 (IL-1) receptors, key initiators of innate immune and inflammatory responses. Pellino proteins associate with and ubiquitinate proteins in these pathways, including the interleukin-1 receptor associated kinase-1 (IRAK1). We determined the X-ray crystal structure of a Pellino2 fragment lacking only the RING domain. This structure reveals that the IRAK1-binding region of Pellino proteins consists largely of a previously unidentified forkhead-associated (FHA) domain. FHA domains are well-characterized phosphothreonine-binding modules, and this cryptic example in Pellino2 can drive interaction of this protein with phosphorylated IRAK1. The Pellino FHA domain is decorated with an unusual appendage or "wing" composed of two long inserts that lie within the FHA homology region. Delineating how this E3 ligase associates with substrates, and how these interactions are regulated by phosphorylation, is crucial for a complete understanding of Toll/IL-1 receptor signaling.


    Organizational Affiliation

    Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein pellino homolog 2 AB285Homo sapiensMutation(s): 0 
Gene Names: PELI2
EC: 2.3.2.27
Find proteins for Q9HAT8 (Homo sapiens)
Explore Q9HAT8 
Go to UniProtKB:  Q9HAT8
NIH Common Fund Data Resources
PHAROS:  Q9HAT8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.242 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.676α = 90
b = 89.484β = 90
c = 125.557γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-12-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-03-21
    Changes: Database references
  • Version 1.3: 2017-10-25
    Changes: Refinement description