3P1N

Crystal structure of human 14-3-3 sigma in complex with TASK-3 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.149 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A semisynthetic fusicoccane stabilizes a protein-protein interaction and enhances the expression of K+ channels at the cell surface

Anders, C.Higuchi, Y.Koschinsky, K.Bartel, M.Schumacher, B.Thiel, P.Nitta, H.Preisig-Muller, R.Schlichthorl, G.Renigunta, V.Ohkanda, J.Daut, J.Kato, N.Ottmann, C.

(2013) Chem Biol 20: 583-593

  • DOI: https://doi.org/10.1016/j.chembiol.2013.03.015
  • Primary Citation of Related Structures:  
    3P1N, 3P1O, 3P1P, 3P1Q, 3P1R, 3P1S, 3SMK, 3SML, 3SMM, 3SMN, 3SMO, 3SP5, 3SPR, 3UX0, 4FR3

  • PubMed Abstract: 

    Small-molecule stabilization of protein-protein interactions is an emerging field in chemical biology. We show how fusicoccanes, originally identified as fungal toxins acting on plants, promote the interaction of 14-3-3 proteins with the human potassium channel TASK-3 and present a semisynthetic fusicoccane derivative (FC-THF) that targets the 14-3-3 recognition motif (mode 3) in TASK-3. In the presence of FC-THF, the binding of 14-3-3 proteins to TASK-3 was increased 19-fold and protein crystallography provided the atomic details of the effects of FC-THF on this interaction. We also tested the functional effects of FC-THF on TASK channels heterologously expressed in Xenopus oocytes. Incubation with 10 μM FC-THF was found to promote the transport of TASK channels to the cell membrane, leading to a significantly higher density of channels at the surface membrane and increased potassium current.


  • Organizational Affiliation

    Chemical Genomics Centre of the Max-Planck-Society, 44227 Dortmund, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
14-3-3 protein sigma235Homo sapiensMutation(s): 0 
Gene Names: SFN
UniProt & NIH Common Fund Data Resources
Find proteins for P31947 (Homo sapiens)
Explore P31947 
Go to UniProtKB:  P31947
PHAROS:  P31947
GTEx:  ENSG00000175793 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP31947
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
6-mer peptide from Potassium channel subfamily K member 9B [auth P]6N/AMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NPC2 (Homo sapiens)
Explore Q9NPC2 
Go to UniProtKB:  Q9NPC2
PHAROS:  Q9NPC2
GTEx:  ENSG00000169427 
Entity Groups  
UniProt GroupQ9NPC2
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.149 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.22α = 90
b = 112.05β = 90
c = 62.51γ = 90
Software Package:
Software NamePurpose
PROdata collection
PHASERphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-10-12
    Type: Initial release
  • Version 1.1: 2017-06-07
    Changes: Database references
  • Version 1.2: 2023-11-01
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 1.3: 2023-12-06
    Changes: Data collection