3UA6

Crystal Structure of the Human Fyn SH3 domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.180 

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This is version 1.1 of the entry. See complete history. 


Literature

The promiscuous binding of the Fyn SH3 domain to a peptide from the NS5A protein.

Martin-Garcia, J.M., Luque, I., Ruiz-Sanz, J., Camara-Artigas, A.

(2012) Acta Crystallogr D Biol Crystallogr 68: 1030-1040

  • DOI: 10.1107/S0907444912019798
  • Primary Citation of Related Structures:  
    3UA7, 3UA6

  • PubMed Abstract: 

    • The hepatitis C virus nonstructural 5A (NS5A) protein is a large zinc-binding phosphoprotein that plays an important role in viral RNA replication and is involved in altering signal transduction pathways in the host cell. This protein interacts with Fyn tyrosine kinase in vivo and regulates its kinase activity ...

    The hepatitis C virus nonstructural 5A (NS5A) protein is a large zinc-binding phosphoprotein that plays an important role in viral RNA replication and is involved in altering signal transduction pathways in the host cell. This protein interacts with Fyn tyrosine kinase in vivo and regulates its kinase activity. The 1.5 Å resolution crystal structure of a complex between the SH3 domain of the Fyn tyrosine kinase and the C-terminal proline-rich motif of the NS5A-derived peptide APPIPPPRRKR has been solved. Crystals were obtained in the presence of ZnCl(2) and belonged to the tetragonal space group P4(1)2(1)2. The asymmetric unit is composed of four SH3 domains and two NS5A peptide molecules; only three of the domain molecules contain a bound peptide, while the fourth molecule seems to correspond to a free form of the domain. Additionally, two of the SH3 domains are bound to the same peptide chain and form a ternary complex. The proline-rich motif present in the NS5A protein seems to be important for RNA replication and virus assembly, and the promiscuous interaction of the Fyn SH3 domain with the NS5A C-terminal proline-rich peptide found in this crystallographic structure may be important in the virus infection cycle.

    Organizational Affiliation: 

    Department of Physical Chemistry, Biochemistry and Inorganic Chemistry, University of Almería, Agrifood Campus of International Excellence (ceiA3), Carretera de Sacramento, 04120 Almería, Spain.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase FynA, B64Homo sapiensMutation(s): 0 
Gene Names: FYN
EC: 2.7.10.2
Find proteins for P06241 (Homo sapiens)
Explore P06241 
Go to UniProtKB:  P06241
NIH Common Fund Data Resources
PHAROS:  P06241
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.180 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.293α = 90
b = 47.074β = 98.52
c = 42.467γ = 90
Software Package:
Software NamePurpose
SAINTdata scaling
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
APEXdata collection
SAINTdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-07-25
    Type: Initial release
  • Version 1.1: 2013-01-23
    Changes: Database references