6OXL

CRYO-EM STRUCTURE OF PHOSPHORYLATED AP-2 (mu E302K) BOUND TO NECAP IN THE PRESENCE OF SS DNA


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A structural mechanism for phosphorylation-dependent inactivation of the AP2 complex.

Partlow, E.A.Baker, R.W.Beacham, G.M.Chappie, J.S.Leschziner, A.E.Hollopeter, G.

(2019) Elife 8

  • DOI: 10.7554/eLife.50003
  • Primary Citation of Related Structures:  
    6OWO, 6OXL

  • PubMed Abstract: 
  • Endocytosis of transmembrane proteins is orchestrated by the AP2 clathrin adaptor complex. AP2 dwells in a closed, inactive state in the cytosol, but adopts an open, active conformation on the plasma membrane. Membrane-activated complexes are also phosphorylated, but the significance of this mark is debated ...

    Endocytosis of transmembrane proteins is orchestrated by the AP2 clathrin adaptor complex. AP2 dwells in a closed, inactive state in the cytosol, but adopts an open, active conformation on the plasma membrane. Membrane-activated complexes are also phosphorylated, but the significance of this mark is debated. We recently proposed that NECAP negatively regulates AP2 by binding open and phosphorylated complexes (Beacham et al., 2018). Here, we report high-resolution cryo-EM structures of NECAP bound to phosphorylated AP2. The site of AP2 phosphorylation is directly coordinated by residues of the NECAP PHear domain that are predicted from genetic screens in C. elegans . Using membrane mimetics to generate conformationally open AP2, we find that a second domain of NECAP binds these complexes and cryo-EM reveals both domains of NECAP engaging closed, inactive AP2. Assays in vitro and in vivo confirm these domains cooperate to inactivate AP2. We propose that phosphorylation marks adaptors for inactivation.


    Organizational Affiliation

    Department of Molecular Medicine, Cornell University, New York, United States.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AP-2 complex subunit alpha-2A621Mus musculusMutation(s): 0 
Gene Names: Ap2a2Adtab
UniProt & NIH Common Fund Data Resources
Find proteins for P17427 (Mus musculus)
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Go to UniProtKB:  P17427
IMPC:  MGI:101920
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
AP-2 complex subunit betaB591Mus musculusMutation(s): 0 
Gene Names: Ap2b1Clapb1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9DBG3 (Mus musculus)
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Go to UniProtKB:  Q9DBG3
IMPC:  MGI:1919020
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
AP-2 complex subunit muC [auth M]435Mus musculusMutation(s): 1 
Gene Names: Ap2m1Clapm1
UniProt
Find proteins for P84091 (Mus musculus)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
AP-2 complex subunit sigmaD [auth S]142Rattus norvegicusMutation(s): 0 
Gene Names: Ap2s1Ap17Claps2
UniProt
Find proteins for P62744 (Rattus norvegicus)
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Adaptin ear-binding coat-associated protein 2E [auth N]266Mus musculusMutation(s): 0 
Gene Names: Necap2
UniProt
Find proteins for Q9D1J1 (Mus musculus)
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Go to UniProtKB:  Q9D1J1
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Unknown region of Adaptin ear-binding coat-associated protein 2 Ex-domainF [auth n]7Mus musculusMutation(s): 0 
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
C [auth M]L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01 GM127548-01A1

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-11
    Type: Initial release
  • Version 1.1: 2020-01-08
    Changes: Author supporting evidence