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- EMDB-10747: AP2 core in physiological buffer -

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Basic information

Entry
Database: EMDB / ID: EMD-10747
TitleAP2 core in physiological buffer
Map data
Sample
  • Complex: AP2 core
    • Complex: AP-2 complex subunits alpha and mu
      • Protein or peptide: AP-2 complex subunit alpha
      • Protein or peptide: AP-2 complex subunit mu
    • Complex: AP-2 complex subunit beta
      • Protein or peptide: AP-2 complex subunit beta
    • Complex: AP-2 complex subunit sigma
      • Protein or peptide: AP-2 complex subunit sigma
Keywordsclathrin / clathrin adaptor / ap2 / clathrin assembly / ENDOCYTOSIS
Function / homology
Function and homology information


Gap junction degradation / Formation of annular gap junctions / LDL clearance / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / LDL clearance / WNT5A-dependent internalization of FZD4 / Retrograde neurotrophin signalling / VLDLR internalisation and degradation / Nef Mediated CD8 Down-regulation ...Gap junction degradation / Formation of annular gap junctions / LDL clearance / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / LDL clearance / WNT5A-dependent internalization of FZD4 / Retrograde neurotrophin signalling / VLDLR internalisation and degradation / Nef Mediated CD8 Down-regulation / Trafficking of GluR2-containing AMPA receptors / Retrograde neurotrophin signalling / clathrin adaptor complex / WNT5A-dependent internalization of FZD4 / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / Trafficking of GluR2-containing AMPA receptors / extrinsic component of presynaptic endocytic zone membrane / VLDLR internalisation and degradation / WNT5A-dependent internalization of FZD4 / MHC class II antigen presentation / Recycling pathway of L1 / AP-2 adaptor complex / regulation of vesicle size / postsynaptic neurotransmitter receptor internalization / Recycling pathway of L1 / LDL clearance / Cargo recognition for clathrin-mediated endocytosis / Retrograde neurotrophin signalling / Cargo recognition for clathrin-mediated endocytosis / clathrin-coated endocytic vesicle / Clathrin-mediated endocytosis / clathrin adaptor activity / Clathrin-mediated endocytosis / positive regulation of synaptic vesicle endocytosis / membrane coat / vesicle budding from membrane / clathrin-dependent endocytosis / coronary vasculature development / MHC class II antigen presentation / endolysosome membrane / signal sequence binding / Nef Mediated CD4 Down-regulation / aorta development / ventricular septum development / low-density lipoprotein particle receptor binding / Neutrophil degranulation / clathrin binding / positive regulation of receptor internalization / Trafficking of GluR2-containing AMPA receptors / Recycling pathway of L1 / synaptic vesicle endocytosis / EPH-ephrin mediated repulsion of cells / negative regulation of protein localization to plasma membrane / protein serine/threonine kinase binding / clathrin-coated pit / vesicle-mediated transport / MHC class II antigen presentation / VLDLR internalisation and degradation / phosphatidylinositol binding / kidney development / intracellular protein transport / clathrin-coated endocytic vesicle membrane / kinase binding / terminal bouton / receptor internalization / cytoplasmic side of plasma membrane / disordered domain specific binding / endocytic vesicle membrane / Cargo recognition for clathrin-mediated endocytosis / synaptic vesicle / Clathrin-mediated endocytosis / presynapse / cytoplasmic vesicle / protein-containing complex assembly / postsynapse / transmembrane transporter binding / Potential therapeutics for SARS / protein domain specific binding / intracellular membrane-bounded organelle / lipid binding / glutamatergic synapse / synapse / protein-containing complex binding / protein kinase binding / membrane / plasma membrane / cytosol
Similarity search - Function
AP-2 complex subunit sigma / Clathrin adaptor, alpha-adaptin, appendage, C-terminal subdomain / Adaptor protein complex AP-2, alpha subunit / Alpha adaptin AP2, C-terminal domain / Mu2, C-terminal domain / AP-2 complex subunit mu, N-terminal / Adaptor protein complex, sigma subunit / Clathrin adaptor, beta-adaptin, appendage, Ig-like subdomain / Beta-adaptin appendage, C-terminal subdomain / AP-1/2/4 complex subunit beta ...AP-2 complex subunit sigma / Clathrin adaptor, alpha-adaptin, appendage, C-terminal subdomain / Adaptor protein complex AP-2, alpha subunit / Alpha adaptin AP2, C-terminal domain / Mu2, C-terminal domain / AP-2 complex subunit mu, N-terminal / Adaptor protein complex, sigma subunit / Clathrin adaptor, beta-adaptin, appendage, Ig-like subdomain / Beta-adaptin appendage, C-terminal subdomain / AP-1/2/4 complex subunit beta / Beta2-adaptin appendage, C-terminal sub-domain / Beta2-adaptin appendage, C-terminal sub-domain / AP complex subunit beta / : / Clathrin adaptor complex, small chain / Clathrin adaptor complexes small chain signature. / Clathrin adaptor complexes medium chain signature 1. / Clathrin adaptor, mu subunit / Clathrin adaptor, mu subunit, conserved site / Clathrin adaptor complexes medium chain signature 2. / : / Coatomer/calthrin adaptor appendage, C-terminal subdomain / Adaptor complexes medium subunit family / AP complex, mu/sigma subunit / Clathrin adaptor complex small chain / AP-2 complex subunit mu, C-terminal superfamily / Clathrin adaptor, alpha/beta/gamma-adaptin, appendage, Ig-like subdomain / Mu homology domain / Adaptin C-terminal domain / Mu homology domain (MHD) profile. / Adaptin C-terminal domain / Clathrin/coatomer adaptor, adaptin-like, N-terminal / Adaptin N terminal region / Clathrin adaptor, appendage, Ig-like subdomain superfamily / Longin-like domain superfamily / TBP domain superfamily / Armadillo/beta-catenin-like repeats / Armadillo / Armadillo-like helical / Armadillo-type fold
Similarity search - Domain/homology
AP-2 complex subunit alpha-2 / AP-2 complex subunit sigma / AP-2 complex subunit beta / AP-2 complex subunit mu / AP-2 complex subunit alpha
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat) / Homo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsKane Dickson V / Kovtun O
Funding support United Kingdom, 2 items
OrganizationGrant numberCountry
Wellcome Trust207455/Z/17/Z United Kingdom
Medical Research Council (MRC, United Kingdom)MC_UP_1201/16 United Kingdom
CitationJournal: Sci Adv / Year: 2020
Title: Architecture of the AP2/clathrin coat on the membranes of clathrin-coated vesicles.
Authors: Oleksiy Kovtun / Veronica Kane Dickson / Bernard T Kelly / David J Owen / John A G Briggs /
Abstract: Clathrin-mediated endocytosis (CME) is crucial for modulating the protein composition of a cell's plasma membrane. Clathrin forms a cage-like, polyhedral outer scaffold around a vesicle, to which ...Clathrin-mediated endocytosis (CME) is crucial for modulating the protein composition of a cell's plasma membrane. Clathrin forms a cage-like, polyhedral outer scaffold around a vesicle, to which cargo-selecting clathrin adaptors are attached. Adaptor protein complex (AP2) is the key adaptor in CME. Crystallography has shown AP2 to adopt a range of conformations. Here, we used cryo-electron microscopy, tomography, and subtomogram averaging to determine structures, interactions, and arrangements of clathrin and AP2 at the key steps of coat assembly, from AP2 in solution to membrane-assembled clathrin-coated vesicles (CCVs). AP2 binds cargo and PtdIns(4,5) (phosphatidylinositol 4,5-bisphosphate)-containing membranes via multiple interfaces, undergoing conformational rearrangement from its cytosolic state. The binding mode of AP2 β2 appendage into the clathrin lattice in CCVs and buds implies how the adaptor structurally modulates coat curvature and coat disassembly.
History
DepositionMar 12, 2020-
Header (metadata) releaseJul 29, 2020-
Map releaseJul 29, 2020-
UpdateMay 22, 2024-
Current statusMay 22, 2024Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.9
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.9
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6yae
  • Surface level: 0.9
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10747.png

Downloads & links

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Map

FileDownload / File: emd_10747.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.07 Å/pix.
x 240 pix.
= 256.8 Å		1.07 Å/pix.
x 240 pix.
= 256.8 Å		1.07 Å/pix.
x 240 pix.
= 256.8 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.07 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.9 / Movie #1: 0.9
Minimum - Maximum-2.2413461 - 4.016664
Average (Standard dev.)0.0014063013 (±0.15118398)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 256.80002 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.071.071.07
M x/y/z240240240
origin x/y/z0.0000.0000.000
length x/y/z256.800256.800256.800
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ280280280
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS240240240
D min/max/mean-2.2414.0170.001

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Supplemental data

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Mask #1

Fileemd_10747_msk_1.map
Projections & Slices
AxesZYX

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Histogram (log scale)

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Half map: #1

Fileemd_10747_half_map_1.map
Projections & Slices
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Half map: #2

Fileemd_10747_half_map_2.map
Projections & Slices
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Sample components

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Entire : AP2 core

EntireName: AP2 core
Components
  • Complex: AP2 core
    • Complex: AP-2 complex subunits alpha and mu
      • Protein or peptide: AP-2 complex subunit alpha
      • Protein or peptide: AP-2 complex subunit mu
    • Complex: AP-2 complex subunit beta
      • Protein or peptide: AP-2 complex subunit beta
    • Complex: AP-2 complex subunit sigma
      • Protein or peptide: AP-2 complex subunit sigma

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Supramolecule #1: AP2 core

SupramoleculeName: AP2 core / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Molecular weightTheoretical: 270 KDa

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Supramolecule #2: AP-2 complex subunits alpha and mu

SupramoleculeName: AP-2 complex subunits alpha and mu / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1, #3
Source (natural)Organism: Rattus norvegicus (Norway rat)

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Supramolecule #3: AP-2 complex subunit beta

SupramoleculeName: AP-2 complex subunit beta / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #4: AP-2 complex subunit sigma

SupramoleculeName: AP-2 complex subunit sigma / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #4
Source (natural)Organism: Mus musculus (house mouse)

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Macromolecule #1: AP-2 complex subunit alpha

MacromoleculeName: AP-2 complex subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 69.656297 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MPAVSKGEGM RGLAVFISDI RNCKSKEAEI KRINKELANI RSKFKGDKAL DGYSKKKYVC KLLFIFLLGH DIDFGHMEAV NLLSSNRYT EKQIGYLFIS VLVNSNSELI RLINNAIKND LASRNPTFMG LALHCIANVG SREMAEAFAG EIPKILVAGD T MDSVKQSA ...String:
MPAVSKGEGM RGLAVFISDI RNCKSKEAEI KRINKELANI RSKFKGDKAL DGYSKKKYVC KLLFIFLLGH DIDFGHMEAV NLLSSNRYT EKQIGYLFIS VLVNSNSELI RLINNAIKND LASRNPTFMG LALHCIANVG SREMAEAFAG EIPKILVAGD T MDSVKQSA ALCLLRLYRT SPDLVPMGDW TSRVVHLLND QHLGVVTAAT SLITTLAQKN PEEFKTSVSL AVSRLSRIVT SA STDLQDY TYYFVPAPWL SVKLLRLLQC YPPPEDPAVR GRLTECLETI LNKAQEPPKS KKVQHSNAKN AVLFEAISLI IHH DSEPNL LVRACNQLGQ FLQHRETNLR YLALESMCTL ASSEFSHEAV KTHIETVINA LKTERDVSVR QRAVDLLYAM CDRS NAQQI VAEMLSYLET ADYSIREEIV LKVAILAEKY AVDYTWYVDT ILNLIRIAGD YVSEEVWYRV IQIVINRDDV QGYAA KTVF EALQAPACHE NLVKVGGYIL GEFGNLIAGD PRSSPLIQFN LLHSKFHLCS VPTRALLLST YIKFVNLFPE VKATIQ DVL RSDSQLKNAD VELQQRAVEY LRLSTVASTD ILATVLEEMP PFPERESSIL AKLKKKKG

UniProtKB: AP-2 complex subunit alpha

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Macromolecule #2: AP-2 complex subunit beta

MacromoleculeName: AP-2 complex subunit beta / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 66.953195 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MTDSKYFTTN KKGEIFELKA ELNNEKKEKR KEAVKKVIAA MTVGKDVSSL FPDVVNCMQT DNLELKKLVY LYLMNYAKSQ PDMAIMAVN SFVKDCEDPN PLIRALAVRT MGCIRVDKIT EYLCEPLRKC LKDEDPYVRK TAAVCVAKLH DINAQMVEDQ G FLDSLRDL ...String:
MTDSKYFTTN KKGEIFELKA ELNNEKKEKR KEAVKKVIAA MTVGKDVSSL FPDVVNCMQT DNLELKKLVY LYLMNYAKSQ PDMAIMAVN SFVKDCEDPN PLIRALAVRT MGCIRVDKIT EYLCEPLRKC LKDEDPYVRK TAAVCVAKLH DINAQMVEDQ G FLDSLRDL IADSNPMVVA NAVAALSEIS ESHPNSNLLD LNPQNINKLL TALNECTEWG QIFILDCLSN YNPKDDREAQ SI CERVTPR LSHANSAVVL SAVKVLMKFL ELLPKDSDYY NMLLKKLAPP LVTLLSGEPE VQYVALRNIN LIVQKRPEIL KQE IKVFFV KYNDPIYVKL EKLDIMIRLA SQANIAQVLA ELKEYATEVD VDFVRKAVRA IGRCAIKVEQ SAERCVSTLL DLIQ TKVNY VVQEAIVVIR DIFRKYPNKY ESIIATLCEN LDSLDEPDAR AAMIWIVGEY AERIDNADEL LESFLEGFHD ESTQV QLTL LTAIVKLFLK KPSETQELVQ QVLSLATQDS DNPDLRDRGY IYWRLLSTDP VTAKEVVLSE KPLISEETDL IEPTLL DEL ICHIGSLASV YHKPPNAFVE GSHGIHRK

UniProtKB: AP-2 complex subunit beta

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Macromolecule #3: AP-2 complex subunit mu

MacromoleculeName: AP-2 complex subunit mu / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 49.726641 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MIGGLFIYNH KGEVLISRVY RDDIGRNAVD AFRVNVIHAR QQVRSPVTNI ARTSFFHVKR SNIWLAAVTK QNVNAAMVFE FLYKMCDVM AAYFGKISEE NIKNNFVLIY ELLDEILDFG YPQNSETGAL KTFITQQGIK SQHQTKEEQS QITSQVTGQI G WRREGIKY ...String:
MIGGLFIYNH KGEVLISRVY RDDIGRNAVD AFRVNVIHAR QQVRSPVTNI ARTSFFHVKR SNIWLAAVTK QNVNAAMVFE FLYKMCDVM AAYFGKISEE NIKNNFVLIY ELLDEILDFG YPQNSETGAL KTFITQQGIK SQHQTKEEQS QITSQVTGQI G WRREGIKY RRNELFLDVL ESVNLLMSPQ GQVLSAHVSG RVVMKSYLSG MPECKFGMND KIVIEKQGKG TADETSKSGK QS IAIDDCT FHQCVRLSKF DSERSISFIP PDGEFELMRY RTTKDIILPF RVIPLVREVG RTKLEVKVVI KSNFKPSLLA QKI EVRIPT PLNTSGVQVI CMKGKAKYKA SENAIVWKIK RMAGMKESQI SAEIELLPTN DKKKWARPPI SMNFEVPFAP SGLK VRYLK VFEPKLNYSD HDVIKWVRYI GRSGIYETRC

UniProtKB: AP-2 complex subunit mu

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Macromolecule #4: AP-2 complex subunit sigma

MacromoleculeName: AP-2 complex subunit sigma / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 17.038688 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MIRFILIQNR AGKTRLAKWY MQFDDDEKQK LIEEVHAVVT VRDAKHTNFV EFRNFKIIYR RYAGLYFCIC VDVNDNNLAY LEAIHNFVE VLNEYFHNVC ELDLVFNFYK VYTVVDEMFL AGEIRETSQT KVLKQLLMLQ SLE

UniProtKB: AP-2 complex subunit sigma

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.5 mg/mL
BufferpH: 7.2
VitrificationCryogen name: ETHANE
DetailsThis sample was primarily monodisperse.

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 32.4 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

2vgl

Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 105000
Initial angle assignmentType: OTHER
Final angle assignmentType: MAXIMUM LIKELIHOOD

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