1OBX

Crystal structure of the complex of PDZ2 of syntenin with an interleukin 5 receptor alpha peptide.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.177 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Molecular Roots of Degenerate Specificity in Syntenin'S Pdz2 Domain: Reassessment of the Pdz Recognition Paradigm

Kang, B.S., Cooper, D.R., Devedjiev, Y., Derewenda, U., Derewenda, Z.S.

(2003) Structure 11: 845

  • DOI: 10.1016/s0969-2126(03)00125-4
  • Primary Citation of Related Structures:  
    1NTE, 1OBX, 1OBY, 1OBZ

  • PubMed Abstract: 

    • Crystal structures of the PDZ2 domain of the scaffolding protein syntenin, both unbound and in complexes with peptides derived from C termini of IL5 receptor (alpha chain) and syndecan, reveal the molecular roots of syntenin's degenerate specificity. Three distinct binding sites (S(0), S(-1), and S(-2)), with affinities for hydrophobic side chains, function in a combinatorial way: S(-1) and S(-2) act together to bind syndecan, while S(0) and S(-1) are involved in the binding of IL5Ralpha ...

    Crystal structures of the PDZ2 domain of the scaffolding protein syntenin, both unbound and in complexes with peptides derived from C termini of IL5 receptor (alpha chain) and syndecan, reveal the molecular roots of syntenin's degenerate specificity. Three distinct binding sites (S(0), S(-1), and S(-2)), with affinities for hydrophobic side chains, function in a combinatorial way: S(-1) and S(-2) act together to bind syndecan, while S(0) and S(-1) are involved in the binding of IL5Ralpha. Neither mode of interaction is consistent with the prior classification scheme, which defined the IL5Ralpha interaction as class I (-S/T-X-phi) and the syndecan interaction as class II (-phi-X-phi). These results, in conjunction with other emerging structural data on PDZ domains, call for a revision of their classification and of the existing model of their mechanism.

    Organizational Affiliation: 

    Department of Molecular Physiology and Biological Physics, The Cancer Center, University of Virginia, Charlottesville, VA 22908, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SYNTENIN 1A79Homo sapiensMutation(s): 0 
Gene Names: SDCBP, MDA9, SYCL
UniProt & NIH Common Fund Data Resources
Find proteins for O00560 (Homo sapiens)
Explore O00560 
Go to UniProtKB:  O00560
PHAROS:  O00560
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO00560
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
INTERLEUKIN 5 RECEPTOR ALPHAB8Homo sapiensMutation(s): 0 
Gene Names: IL5RA, IL5R
UniProt & NIH Common Fund Data Resources
Find proteins for Q01344 (Homo sapiens)
Explore Q01344 
Go to UniProtKB:  Q01344
PHAROS:  Q01344
Entity Groups  
UniProt GroupQ01344
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
E [auth A],
F [auth A]		SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
CO
Query on CO
Download Ideal Coordinates CCD File 
C [auth A],
D [auth A]		COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.177 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.723α = 90
b = 55.978β = 90
c = 51.094γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-07-10
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-08
    Changes: Data collection, Experimental preparation, Other