1W63

AP1 clathrin adaptor core


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.297 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Clathrin Adaptor Protein 1 Core

Heldwein, E.Macia, E.Wang, J.Yin, H.L.Kirchhausen, T.Harrison, S.C.

(2004) Proc.Natl.Acad.Sci.USA 101: 14108

  • DOI: 10.1073/pnas.0406102101

  • PubMed Abstract: 
  • The heterotetrameric adaptor proteins (AP complexes) link the outer lattice of clathrin-coated vesicles with membrane-anchored cargo molecules. We report the crystal structure of the core of the AP-1 complex, which functions in the trans-Golgi networ ...

    The heterotetrameric adaptor proteins (AP complexes) link the outer lattice of clathrin-coated vesicles with membrane-anchored cargo molecules. We report the crystal structure of the core of the AP-1 complex, which functions in the trans-Golgi network (TGN). Packing of complexes in the crystal generates an exceptionally long (1,135-A) unit-cell axis, but the 6-fold noncrystallographic redundancy yields an excellent map at 4-A resolution. The AP-1 core comprises N-terminal fragments of the two large chains, beta1 and gamma, and the intact medium and small chains, micro1 and sigma1. Its molecular architecture closely resembles that of the core of AP-2, the plasma-membrane-specific adaptor, for which a structure has been determined. Both structures represent an "inactive" conformation with respect to binding of cargo with a tyrosine-based sorting signal. TGN localization of AP-1 depends on the small GTPase, Arf1, and the phosphoinositide, PI-4-P. We show that directed mutations of residues at a particular corner of the gamma chain prevent recruitment to the TGN in cells and diminish PI-4-P-dependent, but not Arf1-dependent, liposome binding in vitro.


    Organizational Affiliation

    Children's Hospital, Howard Hughes Medical Institute, Department of Cell Biology, and CBR Institute for Biomedical Research, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ADAPTER-RELATED PROTEIN COMPLEX 1 GAMMA 1 SUBUNIT
A, C, E, G, I, K
618Mus musculusGene Names: Ap1g1 (Adtg, Clapg1)
Find proteins for P22892 (Mus musculus)
Go to UniProtKB:  P22892
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ADAPTER-RELATED PROTEIN COMPLEX 1 BETA 1 SUBUNIT
B, D, F, H, J, L
584Rattus norvegicusGene Names: Ap1b1 (Adtb1)
Find proteins for P52303 (Rattus norvegicus)
Go to UniProtKB:  P52303
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
ADAPTOR-RELATED PROTEIN COMPLEX 1, MU 1 SUBUNIT
M, N, O, P, R, V
423Mus musculusGene Names: Ap1m1 (Cltnm)
Find proteins for P35585 (Mus musculus)
Go to UniProtKB:  P35585
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
ADAPTER-RELATED PROTEIN COMPLEX 1 SIGMA 1A SUBUNIT
Q, S, T, U, W, X
158Mus musculusGene Names: Ap1s1 (Ap19)
Find proteins for P61967 (Mus musculus)
Go to UniProtKB:  P61967
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.297 
  • Space Group: P 32 1 2
Unit Cell:
Length (Å)Angle (°)
a = 178.140α = 90.00
b = 178.140β = 90.00
c = 1134.990γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
AMoREphasing
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-21
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance