2G30

beta appendage of AP2 complexed with ARH peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular Switches Involving the AP-2 beta2 Appendage Regulate Endocytic Cargo Selection and Clathrin Coat Assembly

Edeling, M.A.Mishra, S.K.Keyel, P.A.Steinhauser, A.L.Collins, B.M.Roth, R.Heuser, J.E.Owen, D.J.Traub, L.M.

(2006) Dev.Cell 10: 329-342

  • DOI: 10.1016/j.devcel.2006.01.016

  • PubMed Abstract: 
  • Clathrin-associated sorting proteins (CLASPs) expand the repertoire of endocytic cargo sorted into clathrin-coated vesicles beyond the transmembrane proteins that bind physically to the AP-2 adaptor. LDL and GPCRs are internalized by ARH and beta-arr ...

    Clathrin-associated sorting proteins (CLASPs) expand the repertoire of endocytic cargo sorted into clathrin-coated vesicles beyond the transmembrane proteins that bind physically to the AP-2 adaptor. LDL and GPCRs are internalized by ARH and beta-arrestin, respectively. We show that these two CLASPs bind selectively to the AP-2 beta2 appendage platform via an alpha-helical [DE](n)X(1-2)FXX[FL]XXXR motif, and that this motif also occurs and is functional in the epsins. In beta-arrestin, this motif maintains the endocytosis-incompetent state by binding back on the folded core of the protein in a beta strand conformation. Triggered via a beta-arrestin/GPCR interaction, the motif must be displaced and must undergo a strand to helix transition to enable the beta2 appendage binding that drives GPCR-beta-arrestin complexes into clathrin coats. Another interaction surface on the beta2 appendage sandwich is identified for proteins such as eps15 and clathrin, suggesting a mechanism by which clathrin displaces eps15 to lattice edges during assembly.


    Organizational Affiliation

    Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 2XY, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AP-2 complex subunit beta-1
A
258Homo sapiensMutation(s): 0 
Gene Names: AP2B1 (ADTB2, CLAPB1)
Find proteins for P63010 (Homo sapiens)
Go to Gene View: AP2B1
Go to UniProtKB:  P63010
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
16-mer peptide from Low density lipoprotein receptor adapter protein 1
P
16Homo sapiensMutation(s): 0 
Gene Names: LDLRAP1 (ARH)
Find proteins for Q5SW96 (Homo sapiens)
Go to Gene View: LDLRAP1
Go to UniProtKB:  Q5SW96
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
peptide sequence AAF
S
3N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.215 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 37.750α = 90.00
b = 36.313β = 92.91
c = 98.982γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-03-14
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance