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- EMDB-14517: Chimaera of AP2 with FCHO2 linker domain as a fusion on Cmu2 subunit -

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Basic information

Entry
Database: EMDB / ID: EMD-14517
TitleChimaera of AP2 with FCHO2 linker domain as a fusion on Cmu2 subunit
Map dataLocal resolution filtered overall map
Sample
  • Complex: AP2 core complex
    • Protein or peptide: AP-2 complex subunit alpha-2
    • Protein or peptide: AP-2 complex subunit beta
    • Protein or peptide: AP-2 complex subunit mu
    • Protein or peptide: AP-2 complex subunit sigma
Keywordsadaptor complex / AP2 / trafficking / clathrin / CCP / PROTEIN TRANSPORT
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 FZD4 / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / LDL clearance / Retrograde neurotrophin signalling / Nef Mediated CD8 Down-regulation / Trafficking of GluR2-containing AMPA receptors ...Gap junction degradation / Formation of annular gap junctions / LDL clearance / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / WNT5A-dependent internalization of FZD4 / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / LDL clearance / Retrograde neurotrophin signalling / Nef Mediated CD8 Down-regulation / Trafficking of GluR2-containing AMPA receptors / VLDLR internalisation and degradation / Retrograde neurotrophin signalling / WNT5A-dependent internalization of FZD2, FZD5 and ROR2 / Trafficking of GluR2-containing AMPA receptors / WNT5A-dependent internalization of FZD4 / VLDLR internalisation and degradation / extrinsic component of presynaptic endocytic zone membrane / clathrin adaptor complex / WNT5A-dependent internalization of FZD4 / Recycling pathway of L1 / MHC class II antigen presentation / AP-2 adaptor complex / regulation of vesicle size / postsynaptic neurotransmitter receptor internalization / Cargo recognition for clathrin-mediated endocytosis / Recycling pathway of L1 / Retrograde neurotrophin signalling / clathrin-coated endocytic vesicle / Clathrin-mediated endocytosis / positive regulation of synaptic vesicle endocytosis / Cargo recognition for clathrin-mediated endocytosis / clathrin adaptor activity / Clathrin-mediated endocytosis / LDL clearance / membrane coat / vesicle budding from membrane / clathrin-dependent endocytosis / MHC class II antigen presentation / signal sequence binding / coronary vasculature development / Nef Mediated CD4 Down-regulation / endolysosome membrane / aorta development / ventricular septum development / Neutrophil degranulation / clathrin binding / low-density lipoprotein particle receptor binding / Trafficking of GluR2-containing AMPA receptors / Recycling pathway of L1 / positive regulation of receptor internalization / synaptic vesicle endocytosis / EPH-ephrin mediated repulsion of cells / negative regulation of protein localization to plasma membrane / vesicle-mediated transport / clathrin-coated pit / protein serine/threonine kinase binding / phosphatidylinositol binding / MHC class II antigen presentation / VLDLR internalisation and degradation / kidney development / intracellular protein transport / clathrin-coated endocytic vesicle membrane / terminal bouton / receptor internalization / cytoplasmic side of plasma membrane / kinase binding / disordered domain specific binding / endocytic vesicle membrane / synaptic vesicle / Cargo recognition for clathrin-mediated endocytosis / presynapse / Clathrin-mediated endocytosis / protein-containing complex assembly / cytoplasmic vesicle / Potential therapeutics for SARS / transmembrane transporter binding / postsynapse / protein domain specific binding / synapse / lipid binding / protein-containing complex binding / protein kinase binding / glutamatergic synapse / 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 / Clathrin adaptor, beta-adaptin, appendage, Ig-like subdomain / Beta2-adaptin appendage, C-terminal sub-domain / AP-1/2/4 complex subunit beta / Adaptor protein complex, sigma subunit ...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 / Clathrin adaptor, beta-adaptin, appendage, Ig-like subdomain / Beta2-adaptin appendage, C-terminal sub-domain / AP-1/2/4 complex subunit beta / Adaptor protein complex, sigma subunit / : / Beta-adaptin appendage, C-terminal subdomain / 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 / Clathrin adaptor, alpha/beta/gamma-adaptin, appendage, Ig-like subdomain / Adaptin C-terminal domain / Adaptin C-terminal domain / AP complex, mu/sigma subunit / Clathrin adaptor complex small chain / Adaptor complexes medium subunit family / AP-2 complex subunit mu, C-terminal superfamily / Clathrin/coatomer adaptor, adaptin-like, N-terminal / Adaptin N terminal region / Mu homology domain / Mu homology domain (MHD) profile. / 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
Similarity search - Component
Biological speciesEscherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria) / Rattus norvegicus (Norway rat) / Homo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.16 Å
AuthorsKane Dickson V / Qu K / Owen DJ / Briggs JA / Zaccai NR
Funding support United Kingdom, 1 items
OrganizationGrant numberCountry
Wellcome Trust United Kingdom
CitationJournal: Sci Adv / Year: 2022
Title: FCHO controls AP2's initiating role in endocytosis through a PtdIns(4,5)P-dependent switch.
Authors: Nathan R Zaccai / Zuzana Kadlecova / Veronica Kane Dickson / Kseniya Korobchevskaya / Jan Kamenicky / Oleksiy Kovtun / Perunthottathu K Umasankar / Antoni G Wrobel / Jonathan G G Kaufman / ...Authors: Nathan R Zaccai / Zuzana Kadlecova / Veronica Kane Dickson / Kseniya Korobchevskaya / Jan Kamenicky / Oleksiy Kovtun / Perunthottathu K Umasankar / Antoni G Wrobel / Jonathan G G Kaufman / Sally R Gray / Kun Qu / Philip R Evans / Marco Fritzsche / Filip Sroubek / Stefan Höning / John A G Briggs / Bernard T Kelly / David J Owen / Linton M Traub /
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- ...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.
History
DepositionMar 9, 2022-
Header (metadata) releaseMay 11, 2022-
Map releaseMay 11, 2022-
UpdateJul 17, 2024-
Current statusJul 17, 2024Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_14517.png

Downloads & links

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Map

FileDownload / File: emd_14517.map.gz / Format: CCP4 / Size: 149.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationLocal resolution filtered overall map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.65 Å/pix.
x 340 pix.
= 221.68 Å		0.65 Å/pix.
x 340 pix.
= 221.68 Å		0.65 Å/pix.
x 340 pix.
= 221.68 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.652 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.04
Minimum - Maximum-0.52535814 - 0.6465906
Average (Standard dev.)0.0017413882 (±0.014817049)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions340340340
Spacing340340340
CellA=B=C: 221.68001 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: Half map A

Fileemd_14517_half_map_1.map
AnnotationHalf map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map B

Fileemd_14517_half_map_2.map
AnnotationHalf map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : AP2 core complex

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

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Supramolecule #1: AP2 core complex

SupramoleculeName: AP2 core complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Details: Ternary complex of AP2 core expressed as part of a chimaera with FCHO2 linker (not modelled)
Source (natural)Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
Molecular weightTheoretical: 203 KDa

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Macromolecule #1: AP-2 complex subunit alpha-2

MacromoleculeName: AP-2 complex subunit alpha-2 / 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 'BL21-Gold(DE3)pLysS AG' (bacteria)
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-2

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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 'BL21-Gold(DE3)pLysS AG' (bacteria)
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 'BL21-Gold(DE3)pLysS AG' (bacteria)
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 'BL21-Gold(DE3)pLysS AG' (bacteria)
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

Concentration0.4 mg/mL
BufferpH: 7.6
Details: 50% HKT buffer (10mM Hepes, 10mM Tris 120mM potassium acetate pH 7.2) and 50% Core buffer (10mM Tris, 250mM NaCl, pH 8)
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV
DetailsThis sample was monodisperse.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 47.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.9 µm / Nominal defocus min: 0.9 µm
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 reconstructionResolution.type: BY AUTHOR / Resolution: 4.16 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 143815
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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