4HMY

Structural basis for recruitment and activation of the AP-1 clathrin adaptor complex by Arf1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 7 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural Basis for Recruitment and Activation of the AP-1 Clathrin Adaptor Complex by Arf1.

Ren, X.Farias, G.G.Canagarajah, B.J.Bonifacino, J.S.Hurley, J.H.

(2013) Cell 152: 755-767

  • DOI: 10.1016/j.cell.2012.12.042

  • PubMed Abstract: 
  • AP-1 is a clathrin adaptor complex that sorts cargo between the trans-Golgi network and endosomes. AP-1 recruitment to these compartments requires Arf1-GTP. The crystal structure of the tetrameric core of AP-1 in complex with Arf1-GTP, together with ...

    AP-1 is a clathrin adaptor complex that sorts cargo between the trans-Golgi network and endosomes. AP-1 recruitment to these compartments requires Arf1-GTP. The crystal structure of the tetrameric core of AP-1 in complex with Arf1-GTP, together with biochemical analyses, shows that Arf1 activates cargo binding by unlocking AP-1. Unlocking is driven by two molecules of Arf1 that bridge two copies of AP-1 at two interaction sites. The GTP-dependent switch I and II regions of Arf1 bind to the N terminus of the β1 subunit of one AP-1 complex, while the back side of Arf1 binds to the central part of the γ subunit trunk of a second AP-1 complex. A third Arf1 interaction site near the N terminus of the γ subunit is important for recruitment, but not activation. These observations lead to a model for the recruitment and activation of AP-1 by Arf1.


    Organizational Affiliation

    Cell Biology and Metabolism Program, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AP-1 complex subunit gamma-1
A
601Mus musculusMutation(s): 0 
Gene Names: Ap1g1 (Adtg, Clapg1)
Find proteins for P22892 (Mus musculus)
Go to UniProtKB:  P22892
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
AP-1 complex subunit beta-1
B
586Homo sapiensMutation(s): 1 
Gene Names: AP1B1 (ADTB1, BAM22, CLAPB2)
Find proteins for Q10567 (Homo sapiens)
Go to Gene View: AP1B1
Go to UniProtKB:  Q10567
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
AP-1 complex subunit mu-1
M
423Mus musculusMutation(s): 0 
Gene Names: Ap1m1 (Cltnm)
Find proteins for P35585 (Mus musculus)
Go to UniProtKB:  P35585
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
AP-1 complex subunit sigma-3
S
154Homo sapiensMutation(s): 0 
Gene Names: AP1S3
Find proteins for Q96PC3 (Homo sapiens)
Go to Gene View: AP1S3
Go to UniProtKB:  Q96PC3
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
ADP-ribosylation factor 1
C
172Homo sapiensMutation(s): 1 
Gene Names: ARF1
Find proteins for P84077 (Homo sapiens)
Go to Gene View: ARF1
Go to UniProtKB:  P84077
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

Download SDF File 
Download CCD File 
C
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 7 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.200 
  • Space Group: P 64
Unit Cell:
Length (Å)Angle (°)
a = 267.500α = 90.00
b = 267.500β = 90.00
c = 191.400γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data collection
CNSphasing
CNSrefinement
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-06
    Type: Initial release