Crystal structure of the human Fe65-PTB1 domain (trigonal crystal form)

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.246 

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Crystal structure of the human Fe65-PTB1 domain.

Radzimanowski, J.Ravaud, S.Schlesinger, S.Koch, J.Beyreuther, K.Sinning, I.Wild, K.

(2008) J Biol Chem 283: 23113-23120

  • DOI: https://doi.org/10.1074/jbc.M800861200
  • Primary Citation of Related Structures:  
    3D8D, 3D8E, 3D8F

  • PubMed Abstract: 

    The neuronal adaptor protein Fe65 is involved in brain development, Alzheimer disease amyloid precursor protein (APP) signaling, and proteolytic processing of APP. It contains three protein-protein interaction domains, one WW domain, and a unique tandem array of phosphotyrosine-binding (PTB) domains. The N-terminal PTB domain (Fe65-PTB1) was shown to interact with a variety of proteins, including the low density lipoprotein receptor-related protein (LRP-1), the ApoEr2 receptor, and the histone acetyltransferase Tip60. We have determined the crystal structures of human Fe65-PTB1 in its apo- and in a phosphate-bound form at 2.2 and 2.7A resolution, respectively. The overall fold shows a PTB-typical pleckstrin homology domain superfold. Although Fe65-PTB1 has been classified on an evolutionary basis as a Dab-like PTB domain, it contains attributes of other PTB domain subfamilies. The phosphotyrosine-binding pocket resembles IRS-like PTB domains, and the bound phosphate occupies the binding site of the phosphotyrosine (Tyr(P)) within the canonical NPXpY recognition motif. In addition Fe65-PTB1 contains a loop insertion between helix alpha2 and strand beta2(alpha2/beta2 loop) similar to members of the Shc-like PTB domain subfamily. The structural comparison with the Dab1-PTB domain reveals a putative phospholipid-binding site opposite the peptide binding pocket. We suggest Fe65-PTB1 to interact with its target proteins involved in translocation and signaling of APP in a phosphorylation-dependent manner.

  • Organizational Affiliation

    Heidelberg University Biochemistry Center, INF328, D-69120 Heidelberg, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Amyloid beta A4 precursor protein-binding family B member 1
A, B, C, D
148Homo sapiensMutation(s): 0 
Gene Names: APBB1FE65RIR
UniProt & NIH Common Fund Data Resources
Find proteins for O00213 (Homo sapiens)
Explore O00213 
Go to UniProtKB:  O00213
PHAROS:  O00213
GTEx:  ENSG00000166313 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO00213
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.246 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 145.89α = 90
b = 145.89β = 90
c = 79.051γ = 120
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
ADSCdata collection
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-06-10
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-03-20
    Changes: Data collection, Database references