7OIQ

Crystal structure of AP2 Mu2 in complex with FCHO2 WxxPhi motif (C2 crystal form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.186 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

FCHO controls AP2's initiating role in endocytosis through a PtdIns(4,5)P 2 -dependent switch.

Zaccai, N.R.Kadlecova, Z.Dickson, V.K.Korobchevskaya, K.Kamenicky, J.Kovtun, O.Umasankar, P.K.Wrobel, A.G.Kaufman, J.G.G.Gray, S.R.Qu, K.Evans, P.R.Fritzsche, M.Sroubek, F.Honing, S.Briggs, J.A.G.Kelly, B.T.Owen, D.J.Traub, L.M.

(2022) Sci Adv 8: eabn2018-eabn2018

  • DOI: https://doi.org/10.1126/sciadv.abn2018
  • Primary Citation of Related Structures:  
    7OFP, 7OG1, 7OHI, 7OHO, 7OHZ, 7OI5, 7OIQ, 7OIT, 7Z5C

  • PubMed Abstract: 

    Clathrin-mediated endocytosis (CME) is the main mechanism by which mammalian cells control their cell surface proteome. Proper operation of the pivotal CME cargo adaptor AP2 requires membrane-localized Fer/Cip4 homology domain-only proteins (FCHO). Here, live-cell enhanced total internal reflection fluorescence-structured illumination microscopy shows that FCHO marks sites of clathrin-coated pit (CCP) initiation, which mature into uniform-sized CCPs comprising a central patch of AP2 and clathrin corralled by an FCHO/Epidermal growth factor potential receptor substrate number 15 (Eps15) ring. We dissect the network of interactions between the FCHO interdomain linker and AP2, which concentrates, orients, tethers, and partially destabilizes closed AP2 at the plasma membrane. AP2's subsequent membrane deposition drives its opening, which triggers FCHO displacement through steric competition with phosphatidylinositol 4,5-bisphosphate, clathrin, cargo, and CME accessory factors. FCHO can now relocate toward a CCP's outer edge to engage and activate further AP2s to drive CCP growth/maturation.


  • Organizational Affiliation

    CIMR, University of Cambridge, Biomedical Campus, Hills Road, Cambridge CB2 0XY, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
AP-2 complex subunit muA [auth AAA],
B [auth BBB]
285Rattus norvegicusMutation(s): 0 
Gene Names: Ap2m1
UniProt
Find proteins for P84092 (Rattus norvegicus)
Explore P84092 
Go to UniProtKB:  P84092
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP84092
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
F-BAR domain only protein 2C [auth CCC],
D [auth DDD]
11Homo sapiensMutation(s): 0 
Gene Names: FCHO2
UniProt & NIH Common Fund Data Resources
Find proteins for Q0JRZ9 (Homo sapiens)
Explore Q0JRZ9 
Go to UniProtKB:  Q0JRZ9
PHAROS:  Q0JRZ9
GTEx:  ENSG00000157107 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ0JRZ9
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.186 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.888α = 90
b = 64.539β = 111.95
c = 108.439γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PHENIXrefinement
DIALSdata scaling
PHASERphasing
DIALSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom207455/Z/17/Z

Revision History  (Full details and data files)

  • Version 1.0: 2022-06-01
    Type: Initial release
  • Version 1.1: 2024-06-19
    Changes: Data collection, Derived calculations