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- EMDB-12802: Resting state full-length GluA1/A2 heterotertramer in complex wit... -

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Basic information

Entry
Database: EMDB / ID: EMD-12802
TitleResting state full-length GluA1/A2 heterotertramer in complex with TARP gamma 8 and CNIH2
Map dataComposite map of full-length GluA1/A2 heteromer in complex with TARP gamma 8 and CNIH2 at resting state
Sample
  • Complex: GluA1/A2 heterotertramer in complex with auxiliary subunits TARP gamma 8 and CNIH2
    • Protein or peptide: Glutamate receptor 1
    • Protein or peptide: Glutamate receptor 2
    • Protein or peptide: Protein cornichon homolog 2
    • Protein or peptide: Voltage-dependent calcium channel gamma-8 subunit
  • Ligand: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE
  • Ligand: CHOLESTEROL
KeywordsAMPAR / ion channels / neurotransmission / MEMBRANE PROTEIN
Function / homology
Function and homology information


negative regulation of receptor localization to synapse / negative regulation of anterograde synaptic vesicle transport / Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / COPII-mediated vesicle transport / positive regulation of membrane potential / positive regulation of locomotion involved in locomotory behavior ...negative regulation of receptor localization to synapse / negative regulation of anterograde synaptic vesicle transport / Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / COPII-mediated vesicle transport / positive regulation of membrane potential / positive regulation of locomotion involved in locomotory behavior / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / localization within membrane / cellular response to ammonium ion / neurotransmitter receptor transport, postsynaptic endosome to lysosome / neurotransmitter receptor internalization / response to sucrose / L-type voltage-gated calcium channel complex / LGI-ADAM interactions / proximal dendrite / myosin V binding / neuron spine / Trafficking of AMPA receptors / regulation of AMPA receptor activity / cellular response to L-glutamate / protein phosphatase 2B binding / regulation of monoatomic ion transmembrane transport / response to arsenic-containing substance / conditioned place preference / postsynaptic neurotransmitter receptor diffusion trapping / regulation of NMDA receptor activity / cellular response to dsRNA / dendritic spine membrane / Synaptic adhesion-like molecules / beta-2 adrenergic receptor binding / long-term synaptic depression / cellular response to peptide hormone stimulus / response to morphine / protein kinase A binding / neuronal cell body membrane / peptide hormone receptor binding / spine synapse / dendritic spine neck / response to psychosocial stress / spinal cord development / dendritic spine head / Activation of AMPA receptors / channel regulator activity / perisynaptic space / AMPA glutamate receptor activity / transmission of nerve impulse / ligand-gated monoatomic cation channel activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / immunoglobulin binding / behavioral response to pain / AMPA glutamate receptor complex / kainate selective glutamate receptor activity / adenylate cyclase binding / ionotropic glutamate receptor complex / cellular response to glycine / extracellularly glutamate-gated ion channel activity / : / positive regulation of excitatory postsynaptic potential / excitatory synapse / asymmetric synapse / regulation of receptor recycling / regulation of postsynaptic membrane potential / regulation of postsynaptic membrane neurotransmitter receptor levels / calcium channel regulator activity / G-protein alpha-subunit binding / Unblocking of NMDA receptors, glutamate binding and activation / long-term memory / positive regulation of synaptic transmission / postsynaptic density, intracellular component / glutamate receptor binding / voltage-gated calcium channel activity / neuronal action potential / response to electrical stimulus / glutamate-gated receptor activity / synapse assembly / regulation of synaptic transmission, glutamatergic / response to fungicide / cytoskeletal protein binding / vesicle-mediated transport / presynaptic active zone membrane / extracellular ligand-gated monoatomic ion channel activity / dendrite membrane / ionotropic glutamate receptor binding / glutamate-gated calcium ion channel activity / somatodendritic compartment / cellular response to brain-derived neurotrophic factor stimulus / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / ionotropic glutamate receptor signaling pathway / positive regulation of synaptic transmission, glutamatergic / SNARE binding / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / dendritic shaft / regulation of membrane potential / synaptic transmission, glutamatergic
Similarity search - Function
Voltage-dependent calcium channel, gamma-8 subunit / Cornichon / Cornichon, conserved site / Cornichon protein / Cornichon family signature. / Cornichon / : / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily ...Voltage-dependent calcium channel, gamma-8 subunit / Cornichon / Cornichon, conserved site / Cornichon protein / Cornichon family signature. / Cornichon / : / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / : / Ionotropic glutamate receptor / Eukaryotic homologues of bacterial periplasmic substrate binding proteins. / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I
Similarity search - Domain/homology
Glutamate receptor 1 / Glutamate receptor 2 / Protein cornichon homolog 2 / Voltage-dependent calcium channel gamma-8 subunit
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsZhang D / Watson JF / Matthews PM / Cais O / Greger IH
Funding support2 items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_U105174197
Biotechnology and Biological Sciences Research Council (BBSRC)BB/N002113/1
CitationJournal: Nature / Year: 2021
Title: Gating and modulation of a hetero-octameric AMPA glutamate receptor.
Authors: Danyang Zhang / Jake F Watson / Peter M Matthews / Ondrej Cais / Ingo H Greger /
Abstract: AMPA receptors (AMPARs) mediate the majority of excitatory transmission in the brain and enable the synaptic plasticity that underlies learning. A diverse array of AMPAR signalling complexes are ...AMPA receptors (AMPARs) mediate the majority of excitatory transmission in the brain and enable the synaptic plasticity that underlies learning. A diverse array of AMPAR signalling complexes are established by receptor auxiliary subunits, which associate with the AMPAR in various combinations to modulate trafficking, gating and synaptic strength. However, their mechanisms of action are poorly understood. Here we determine cryo-electron microscopy structures of the heteromeric GluA1-GluA2 receptor assembled with both TARP-γ8 and CNIH2, the predominant AMPAR complex in the forebrain, in both resting and active states. Two TARP-γ8 and two CNIH2 subunits insert at distinct sites beneath the ligand-binding domains of the receptor, with site-specific lipids shaping each interaction and affecting the gating regulation of the AMPARs. Activation of the receptor leads to asymmetry between GluA1 and GluA2 along the ion conduction path and an outward expansion of the channel triggers counter-rotations of both auxiliary subunit pairs, promoting the active-state conformation. In addition, both TARP-γ8 and CNIH2 pivot towards the pore exit upon activation, extending their reach for cytoplasmic receptor elements. CNIH2 achieves this through its uniquely extended M2 helix, which has transformed this endoplasmic reticulum-export factor into a powerful AMPAR modulator that is capable of providing hippocampal pyramidal neurons with their integrative synaptic properties.
History
DepositionApr 26, 2021-
Header (metadata) releaseJun 9, 2021-
Map releaseJun 9, 2021-
UpdateNov 13, 2024-
Current statusNov 13, 2024Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.02
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  • Surface view with fitted model
  • Atomic models: PDB-7oca
  • Surface level: 0.02
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_12802.png

Downloads & links

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Map

FileDownload / File: emd_12802.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationComposite map of full-length GluA1/A2 heteromer in complex with TARP gamma 8 and CNIH2 at resting state
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.07 Å/pix.
x 320 pix.
= 342.4 Å		1.07 Å/pix.
x 320 pix.
= 342.4 Å		1.07 Å/pix.
x 320 pix.
= 342.4 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: 0.02 / Movie #1: 0.02
Minimum - Maximum-0.11846892 - 0.19506866
Average (Standard dev.)0.00041069533 (±0.0039709494)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 342.40002 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.071.071.07
M x/y/z320320320
origin x/y/z0.0000.0000.000
length x/y/z342.400342.400342.400
α/β/γ90.00090.00090.000
start NX/NY/NZ727265
NX/NY/NZ157157169
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS320320320
D min/max/mean-0.1180.1950.000

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Supplemental data

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Sample components

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Entire : GluA1/A2 heterotertramer in complex with auxiliary subunits TARP ...

EntireName: GluA1/A2 heterotertramer in complex with auxiliary subunits TARP gamma 8 and CNIH2
Components
  • Complex: GluA1/A2 heterotertramer in complex with auxiliary subunits TARP gamma 8 and CNIH2
    • Protein or peptide: Glutamate receptor 1
    • Protein or peptide: Glutamate receptor 2
    • Protein or peptide: Protein cornichon homolog 2
    • Protein or peptide: Voltage-dependent calcium channel gamma-8 subunit
  • Ligand: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE
  • Ligand: CHOLESTEROL

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Supramolecule #1: GluA1/A2 heterotertramer in complex with auxiliary subunits TARP ...

SupramoleculeName: GluA1/A2 heterotertramer in complex with auxiliary subunits TARP gamma 8 and CNIH2
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 527 KDa

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Macromolecule #1: Glutamate receptor 1

MacromoleculeName: Glutamate receptor 1 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 102.66193 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MPYIFAFFCT GFLGAVVGAD YKDDDDKNFP NNIQIGGLFP NQQSQEHAAF RFALSQLTEP PKLLPQIDIV NISDSFEMTY RFCSQFSKG VYAIFGFYER RTVNMLTSFC GALHVCFITP SFPVDTSNQF VLQLRPELQE ALISIIDHYK WQTFVYIYDA D RGLSVLQR ...String:
MPYIFAFFCT GFLGAVVGAD YKDDDDKNFP NNIQIGGLFP NQQSQEHAAF RFALSQLTEP PKLLPQIDIV NISDSFEMTY RFCSQFSKG VYAIFGFYER RTVNMLTSFC GALHVCFITP SFPVDTSNQF VLQLRPELQE ALISIIDHYK WQTFVYIYDA D RGLSVLQR VLDTAAEKNW QVTAVNILTT TEEGYRMLFQ DLEKKKERLV VVDCESERLN AILGQIVKLE KNGIGYHYIL AN LGFMDID LNKFKESGAN VTGFQLVNYT DTIPARIMQQ WRTSDSRDHT RVDWKRPKYT SALTYDGVKV MAEAFQSLRR QRI DISRRG NAGDCLANPA VPWGQGIDIQ RALQQVRFEG LTGNVQFNEK GRRTNYTLHV IEMKHDGIRK IGYWNEDDKF VPAA TDAQA GGDNSSVQNR TYIVTTILED PYVMLKKNAN QFEGNDRYEG YCVELAAEIA KHVGYSYRLE IVSDGKYGAR DPDTK AWNG MVGELVYGRA DVAVAPLTIT LVREEVIDFS KPFMSLGISI MIKKPQKSKP GVFSFLDPLA YEIWMCIVFA YIGVSV VLF LVSRFSPYEW HSEEFEEGRD QTTSDQSNEF GIFNSLWFSL GAFMQQGCDI SPRSLSGRIV GGVWWFFTLI IISSYTA NL AAFLTVERMV SPIESAEDLA KQTEIAYGTL EAGSTKEFFR RSKIAVFEKM WTYMKSAEPS VFVRTTEEGM IRVRKSKG K YAYLLESTMN EYIEQRKPCD TMKVGGNLDS KGYGIATPKG SALRGPVNLA VLKLSEQGVL DKLKSKWWYD KGECGSKDS GSKDKTSALS LSNVAGVFYI LIGGLGLAML VALIEFCYKS RSESKRMKGF CLIPQQSINE AIRTSTLPRN SGAGASGGGG SGENGRVVS QDFPKSMQSI PCMSHSSGMP LGATGL

UniProtKB: Glutamate receptor 1

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Macromolecule #2: Glutamate receptor 2

MacromoleculeName: Glutamate receptor 2 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 96.247055 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MQKIMHISVL LSPVLWGLIF GVSSNSIQIG GLFPRGADQE YSAFRVGMVQ FSTSEFRLTP HIDNLEVANS FAVTNAFCSQ FSRGVYAIF GFYDKKSVNT ITSFCGTLHV SFITPSFPTD GTHPFVIQMR PDLKGALLSL IEYYQWDKFA YLYDSDRGLS T LQAVLDSA ...String:
MQKIMHISVL LSPVLWGLIF GVSSNSIQIG GLFPRGADQE YSAFRVGMVQ FSTSEFRLTP HIDNLEVANS FAVTNAFCSQ FSRGVYAIF GFYDKKSVNT ITSFCGTLHV SFITPSFPTD GTHPFVIQMR PDLKGALLSL IEYYQWDKFA YLYDSDRGLS T LQAVLDSA AEKKWQVTAI NVGNINNDKK DETYRSLFQD LELKKERRVI LDCERDKVND IVDQVITIGK HVKGYHYIIA NL GFTDGDL LKIQFGGANV SGFQIVDYDD SLVSKFIERW STLEEKEYPG AHTATIKYTS ALTYDAVQVM TEAFRNLRKQ RIE ISRRGN AGDCLANPAV PWGQGVEIER ALKQVQVEGL SGNIKFDQNG KRINYTINIM ELKTNGPRKI GYWSEVDKMV VTLT ELPSG NDTSGLENKT VVVTTILESP YVMMKKNHEM LEGNERYEGY CVDLAAEIAK HCGFKYKLTI VGDGKYGARD ADTKI WNGM VGELVYGKAD IAIAPLTITL VREEVIDFSK PFMSLGISIM IKKPQKSKPG VFSFLDPLAY EIWMCIVFAY IGVSVV LFL VSRFSPYEWH TEEFEDGRET QSSESTNEFG IFNSLWFSLG AFMRQGCDIS PRSLSGRIVG GVWWFFTLII ISSYTAN LA AFLTVERMVS PIESAEDLSK QTEIAYGTLD SGSTKEFFRR SKIAVFDKMW TYMRSAEPSV FVRTTAEGVA RVRKSKGK Y AYLLESTMNE YIEQRKPCDT MKVGGNLDSK GYGIATPKGS SLGTPVNLAV LKLSEQGVLD KLKNKWWYDK GECGAKDSG SKEKTSALSL SNVAGVFYIL VGGLGLAMLV ALIEFCYKSR AEAKRMKVAK NPQNINPSSS

UniProtKB: Glutamate receptor 2

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Macromolecule #3: Protein cornichon homolog 2

MacromoleculeName: Protein cornichon homolog 2 / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 22.000605 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
MAFTFAAFCY MLTLVLCASL IFFVIWHIIA FDELRTDFKN PIDQGNPARA RERLKNIERI CCLLRKLVVP EYSIHGLFCL MFLCAAEWV TLGLNIPLLF YHLWRYFHRP ADGSEVMYDA VSIMNADILN YCQKESWCKL AFYLLSFFYY LYSMVYTLVS F ENLYFQSG GSTETSQVAP AYPYDVPDYA

UniProtKB: Protein cornichon homolog 2

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Macromolecule #4: Voltage-dependent calcium channel gamma-8 subunit

MacromoleculeName: Voltage-dependent calcium channel gamma-8 subunit / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 43.576004 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GESLKRWNEE RGLWCEKGVQ VLLTTIGAFA AFGLMTIAIS TDYWLYTRAL ICNTTNLTAG DDGPPHRGGS GSSEKKDPGG LTHSGLWRI CCLEGLKRGV CVKINHFPED TDYDHDSAEY LLRVVRASSI FPILSAILLL LGGVCVAASR VYKSKRNIIL G AGILFVAA ...String:
GESLKRWNEE RGLWCEKGVQ VLLTTIGAFA AFGLMTIAIS TDYWLYTRAL ICNTTNLTAG DDGPPHRGGS GSSEKKDPGG LTHSGLWRI CCLEGLKRGV CVKINHFPED TDYDHDSAEY LLRVVRASSI FPILSAILLL LGGVCVAASR VYKSKRNIIL G AGILFVAA GLSNIIGVIV YISANAGEPG PKRDEEKKNH YSYGWSFYFG GLSFILAEVI GVLAVNIYIE RSREAHCQSR SD LLKAGGG AGGSGGSGPS AILRLPSYRF RYRRRSRSSS RGSSEASPSR DASPGGPGGP GFASTDISMY TLSRDPSKGS VAA GLASAG GGGGGAGVGA YGGAAGAAGG GGTGSERDRG SSAGFLTLHN AFPKEAASGV TVTVTGPPAA PAPAPPAPAA PAPG TLSKE AAASNTNTLN RKLEVLFQ

UniProtKB: Voltage-dependent calcium channel gamma-8 subunit

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Macromolecule #7: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-s...

MacromoleculeName: 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide
type: ligand / ID: 7 / Number of copies: 4 / Formula: E2Q
Molecular weightTheoretical: 336.28 Da
Chemical component information

ChemComp-E2Q:
6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide / antagonist*YM

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Macromolecule #8: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 8 / Number of copies: 6 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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Macromolecule #9: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE

MacromoleculeName: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / type: ligand / ID: 9 / Number of copies: 46 / Formula: PC1
Molecular weightTheoretical: 790.145 Da
Chemical component information

ChemComp-PC1:
1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / phospholipid*YM

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Macromolecule #10: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 10 / Number of copies: 2 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL

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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

BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 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: EMDB MAP
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 218320
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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