5N7F

MAGI-1 complexed with a pRSK1 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Dynamic control of RSK complexes by phosphoswitch-based regulation.

Gogl, G.Biri-Kovacs, B.Poti, A.L.Vadaszi, H.Szeder, B.Bodor, A.Schlosser, G.Acs, A.Turiak, L.Buday, L.Alexa, A.Nyitray, L.Remenyi, A.

(2018) FEBS J. 285: 46-71

  • DOI: 10.1111/febs.14311
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Assembly and disassembly of protein-protein complexes needs to be dynamically controlled and phosphoswitches based on linear motifs are crucial in this process. Extracellular signal-regulated kinase 2 (ERK2) recognizes a linear-binding motif at the C ...

    Assembly and disassembly of protein-protein complexes needs to be dynamically controlled and phosphoswitches based on linear motifs are crucial in this process. Extracellular signal-regulated kinase 2 (ERK2) recognizes a linear-binding motif at the C-terminal tail (CTT) of ribosomal S6 kinase 1 (RSK1), leading to phosphorylation and subsequent activation of RSK1. The CTT also contains a classical PDZ domain-binding motif which binds RSK substrates (e.g. MAGI-1). We show that autophosphorylation of the disordered CTT promotes the formation of an intramolecular charge clamp, which efficiently masks critical residues and indirectly hinders ERK binding. Thus, RSK1 CTT operates as an autoregulated phosphoswitch: its phosphorylation at specific sites affects its protein-binding capacity and its conformational dynamics. These biochemical feedbacks, which form the structural basis for the rapid dissociation of ERK2-RSK1 and RSK1-PDZ substrate complexes under sustained epidermal growth factor (EGF) stimulation, were structurally characterized and validated in living cells. Overall, conformational changes induced by phosphorylation in disordered regions of protein kinases, coupled to allosteric events occurring in the kinase domain cores, may provide mechanisms that contribute to the emergence of complex signaling activities. In addition, we show that phosphoswitches based on linear motifs can be functionally classified as ON and OFF protein-protein interaction switches or dimmers, depending on the specific positioning of phosphorylation target sites in relation to functional linear-binding motifs. Moreover, interaction of phosphorylated residues with positively charged residues in disordered regions is likely to be a common mechanism of phosphoregulation.


    Organizational Affiliation

    Department of Biochemistry, ELTE Eötvös Loránd University, Budapest, Hungary.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Membrane-associated guanylate kinase, WW and PDZ domain-containing protein 1,Annexin A2
A, B
427Homo sapiensMutation(s): 0 
Gene Names: ANXA2 (ANX2, ANX2L4, CAL1H, LPC2D), MAGI1 (AIP3, BAIAP1, BAP1, TNRC19)
Find proteins for P07355 (Homo sapiens)
Go to Gene View: ANXA2
Go to UniProtKB:  P07355
Find proteins for Q96QZ7 (Homo sapiens)
Go to Gene View: MAGI1
Go to UniProtKB:  Q96QZ7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ribosomal protein S6 kinase alpha-1
C
49Homo sapiensMutation(s): 0 
Gene Names: RPS6KA1 (MAPKAPK1A, RSK1)
EC: 2.7.11.1
Find proteins for Q15418 (Homo sapiens)
Go to Gene View: RPS6KA1
Go to UniProtKB:  Q15418
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
C
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.186 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 60.150α = 90.00
b = 98.560β = 90.00
c = 200.310γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
PHENIXrefinement
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2017-02-20 
  • Released Date: 2017-11-08 
  • Deposition Author(s): Gogl, G., Nyitray, L.

Revision History 

  • Version 1.0: 2017-11-08
    Type: Initial release
  • Version 1.1: 2018-01-17
    Type: Database references