2P8V

Crystal structure of human Homer3 EVH1 domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NFAT binding and regulation of T cell activation by the cytoplasmic scaffolding Homer proteins.

Huang, G.N.Huso, D.L.Bouyain, S.Tu, J.McCorkell, K.A.May, M.J.Zhu, Y.Lutz, M.Collins, S.Dehoff, M.Kang, S.Whartenby, K.Powell, J.Leahy, D.Worley, P.F.

(2008) Science 319: 476-481

  • DOI: 10.1126/science.1151227

  • PubMed Abstract: 
  • T cell receptor (TCR) and costimulatory receptor (CD28) signals cooperate in activating T cells, although understanding of how these pathways are themselves regulated is incomplete. We found that Homer2 and Homer3, members of the Homer family of cyto ...

    T cell receptor (TCR) and costimulatory receptor (CD28) signals cooperate in activating T cells, although understanding of how these pathways are themselves regulated is incomplete. We found that Homer2 and Homer3, members of the Homer family of cytoplasmic scaffolding proteins, are negative regulators of T cell activation. This is achieved through binding of nuclear factor of activated T cells (NFAT) and by competing with calcineurin. Homer-NFAT binding was also antagonized by active serine-threonine kinase AKT, thereby enhancing TCR signaling via calcineurin-dependent dephosphorylation of NFAT. This corresponded with changes in cytokine expression and an increase in effector-memory T cell populations in Homer-deficient mice, which also developed autoimmune-like pathology. These results demonstrate a further means by which costimulatory signals are regulated to control self-reactivity.


    Organizational Affiliation

    Program in Biochemistry, Cellular and Molecular Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Homer protein homolog 3
A
117Homo sapiensMutation(s): 0 
Gene Names: HOMER3
Find proteins for Q9NSC5 (Homo sapiens)
Go to Gene View: HOMER3
Go to UniProtKB:  Q9NSC5
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.222 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 49.470α = 90.00
b = 49.470β = 90.00
c = 80.710γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
ADSCdata collection
CNSrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-18
    Type: Refinement description