5WRM

Mu2 subunit of the clathrin adaptor complex AP2 in complex with IRS-1 Y658 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.597 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

IRS-1 acts as an endocytic regulator of IGF-I receptor to facilitate sustained IGF signaling

Yoneyama, Y.Lanzerstorfer, P.Niwa, H.Umehara, T.Shibano, T.Yokoyama, S.Chida, K.Weghuber, J.Hakuno, F.Takahashi, S.I.

(2018) Elife 7: --

  • DOI: 10.7554/eLife.32893
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Insulin-like growth factor-I receptor (IGF-IR) preferentially regulates the long-term IGF activities including growth and metabolism. Kinetics of ligand-dependent IGF-IR endocytosis determines how IGF induces such downstream signaling outputs. Here, ...

    Insulin-like growth factor-I receptor (IGF-IR) preferentially regulates the long-term IGF activities including growth and metabolism. Kinetics of ligand-dependent IGF-IR endocytosis determines how IGF induces such downstream signaling outputs. Here, we find that the insulin receptor substrate (IRS)-1 modulates how long ligand-activated IGF-IR remains at the cell surface before undergoing endocytosis in mammalian cells. IRS-1 interacts with the clathrin adaptor complex AP2. IRS-1, but not an AP2-binding-deficient mutant, delays AP2-mediated IGF-IR endocytosis after the ligand stimulation. Mechanistically, IRS-1 inhibits the recruitment of IGF-IR into clathrin-coated structures; for this reason, IGF-IR avoids rapid endocytosis and prolongs its activity on the cell surface. Accelerating IGF-IR endocytosis via IRS-1 depletion induces the shift from sustained to transient Akt activation and augments FoxO-mediated transcription. Our study establishes a new role for IRS-1 as an endocytic regulator of IGF-IR that ensures sustained IGF bioactivity, independent of its classic role as an adaptor in IGF-IR signaling.


    Organizational Affiliation

    Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Wels, Austria.,PRESTO, Japan Science and Technology Agency, Kawaguchi, Japan.,RIKEN Structural Biology Laboratory, Yokohama, Japan.,RIKEN Systems and Structural Biology Center, Yokohama, Japan.,University of Applied Sciences Upper Austria, Wels, Austria.,RIKEN Center for Life Science Technologies, Yokohama, Japan.,Department of Animal Resource Sciences, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AP-2 complex subunit mu
A
278Rattus norvegicusMutation(s): 0 
Gene Names: Ap2m1
Find proteins for P84092 (Rattus norvegicus)
Go to UniProtKB:  P84092
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Insulin receptor substrate 1
P
8Rattus norvegicusMutation(s): 0 
Gene Names: Irs1 (Irs-1)
Find proteins for P35570 (Rattus norvegicus)
Go to UniProtKB:  P35570
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.597 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.192 
  • Space Group: P 64
Unit Cell:
Length (Å)Angle (°)
a = 125.478α = 90.00
b = 125.478β = 90.00
c = 74.138γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
HKL-2000data processing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-12-06
    Type: Initial release
  • Version 1.1: 2018-12-19
    Type: Data collection, Database references