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- EMDB-21671: CryoEM Structure of the glucagon receptor with a dual-agonist peptide -

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Basic information

Entry
Database: EMDB / ID: EMD-21671
TitleCryoEM Structure of the glucagon receptor with a dual-agonist peptide
Map datapostprocessed map
Sample
  • Complex: Glucagon Receptor complex
    • Complex: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Receptor activity-modifying protein 3, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Calcitonin gene-related peptide type 1 receptor, Glucagon Receptor
      • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
      • Protein or peptide: Glucagon receptor
    • Complex: Dual-agonist peptide
      • Protein or peptide: Dual-agonist peptide
    • Complex: Nanobody 35
      • Protein or peptide: Nanobody35
Function / homology
Function and homology information


regulation of glycogen metabolic process / glucagon receptor activity / cellular response to glucagon stimulus / response to starvation / exocytosis / peptide hormone binding / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / D1 dopamine receptor binding ...regulation of glycogen metabolic process / glucagon receptor activity / cellular response to glucagon stimulus / response to starvation / exocytosis / peptide hormone binding / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / D1 dopamine receptor binding / intracellular transport / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / adenylate cyclase activator activity / hormone-mediated signaling pathway / cellular response to starvation / response to nutrient / guanyl-nucleotide exchange factor activity / trans-Golgi network membrane / generation of precursor metabolites and energy / G-protein beta/gamma-subunit complex binding / bone development / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / cognition / platelet aggregation / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / regulation of blood pressure / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / sensory perception of smell / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / glucose homeostasis / Ca2+ pathway / positive regulation of cold-induced thermogenesis / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / cell surface receptor signaling pathway / endosome / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / positive regulation of gene expression / protein-containing complex binding / GTP binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
GPCR, family 2, glucagon receptor / GPCR, family 2, glucagon-like peptide-1/glucagon receptor / : / G-protein coupled receptors family 2 signature 1. / Hormone receptor domain / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / GPCR family 2, extracellular hormone receptor domain superfamily / G-protein coupled receptors family 2 signature 2. ...GPCR, family 2, glucagon receptor / GPCR, family 2, glucagon-like peptide-1/glucagon receptor / : / G-protein coupled receptors family 2 signature 1. / Hormone receptor domain / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / GPCR family 2, extracellular hormone receptor domain superfamily / G-protein coupled receptors family 2 signature 2. / GPCR, family 2, secretin-like, conserved site / GPCR, family 2, secretin-like / 7 transmembrane receptor (Secretin family) / GPCR, family 2-like / G-protein coupled receptors family 2 profile 2. / G-protein alpha subunit, group S / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Glucagon receptor / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Similarity search - Component
Biological speciesHomo sapiens (human) / synthetic construct (others) / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsBelousoff MJ / Sexton P / Danev R
Funding support China, Australia, Japan, 10 items
OrganizationGrant numberCountry
Novo Nordisk FoundationNNCAS-2017-1-CC China
National Health and Medical Research Council (NHMRC, Australia)1120919 Australia
National Health and Medical Research Council (NHMRC, Australia)1150083 Australia
National Health and Medical Research Council (NHMRC, Australia)1159006 Australia
Takeda Science Foundation2019 Medical Research Grant Japan
Japan Science and Technology#18069571 Japan
National Science Foundation (NSF, China)2018ZX09711002-002-005 China
National Science Foundation (NSF, China)2018ZX09735-001 China
National Key R&D Program of China2018YFA0507000 China
National Science Foundation (NSF, China)2018ZX09711002-001 China
CitationJournal: J Biol Chem / Year: 2020
Title: Cryo-electron microscopy structure of the glucagon receptor with a dual-agonist peptide.
Authors: Rulue Chang / Xin Zhang / Anna Qiao / Antao Dai / Matthew J Belousoff / Qiuxiang Tan / Lijun Shao / Li Zhong / Guangyao Lin / Yi-Lynn Liang / Limin Ma / Shuo Han / Dehua Yang / Radostin ...Authors: Rulue Chang / Xin Zhang / Anna Qiao / Antao Dai / Matthew J Belousoff / Qiuxiang Tan / Lijun Shao / Li Zhong / Guangyao Lin / Yi-Lynn Liang / Limin Ma / Shuo Han / Dehua Yang / Radostin Danev / Ming-Wei Wang / Denise Wootten / Beili Wu / Patrick M Sexton /
Abstract: Unimolecular dual agonists of the glucagon (GCG) receptor (GCGR) and glucagon-like peptide-1 receptor (GLP-1R) are a new class of drugs that are potentially superior to GLP-1R-specific agonists for ...Unimolecular dual agonists of the glucagon (GCG) receptor (GCGR) and glucagon-like peptide-1 receptor (GLP-1R) are a new class of drugs that are potentially superior to GLP-1R-specific agonists for the management of metabolic disease. The dual-agonist, peptide 15 (P15), is a glutamic acid 16 analog of GCG with GLP-1 peptide substitutions between amino acids 17 and 24 that has potency equivalent to those of the cognate peptide agonists at the GCGR and GLP-1R. Here, we have used cryo-EM to solve the structure of an active P15-GCGR-G complex and compared this structure to our recently published structure of the GCGR-G complex bound to GCG. This comparison revealed that P15 has a reduced interaction with the first extracellular loop (ECL1) and the top of transmembrane segment 1 (TM1) such that there is increased mobility of the GCGR extracellular domain and at the C terminus of the peptide compared with the GCG-bound receptor. We also observed a distinct conformation of ECL3 and could infer increased mobility of the far N-terminal His-1 residue in the P15-bound structure. These regions of conformational variance in the two peptide-bound GCGR structures were also regions that were distinct between GCGR structures and previously published peptide-bound structures of the GLP-1R, suggesting that greater conformational dynamics may contribute to the increased efficacy of P15 in activation of the GLP-1R compared with GCG. The variable domains in this receptor have previously been implicated in biased agonism at the GLP-1R and could result in altered signaling of P15 at the GCGR compared with GCG.
History
DepositionApr 7, 2020-
Header (metadata) releaseMay 27, 2020-
Map releaseMay 27, 2020-
UpdateJul 22, 2020-
Current statusJul 22, 2020Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.01
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.01
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6whc
  • Surface level: 0.01
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_21671.png

Downloads & links

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Map

FileDownload / File: emd_21671.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationpostprocessed map
Voxel sizeX=Y=Z: 0.83 Å
Density
Contour LevelBy AUTHOR: 0.01 / Movie #1: 0.01
Minimum - Maximum-0.03450246 - 0.064458
Average (Standard dev.)0.00016717285 (±0.00168693)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 212.48 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.830.830.83
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z212.480212.480212.480
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ280280280
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.0350.0640.000

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Supplemental data

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Mask #1

Fileemd_21671_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: unsharpened map

Fileemd_21671_additional.map
Annotationunsharpened map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: halfmap 1

Fileemd_21671_half_map_1.map
Annotationhalfmap 1
Projections & Slices
AxesZYX

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Histogram

Histogram (log scale)

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Half map: halfmap 2

Fileemd_21671_half_map_2.map
Annotationhalfmap 2
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Sample components

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Entire : Glucagon Receptor complex

EntireName: Glucagon Receptor complex
Components
  • Complex: Glucagon Receptor complex
    • Complex: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Receptor activity-modifying protein 3, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Calcitonin gene-related peptide type 1 receptor, Glucagon Receptor
      • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
      • Protein or peptide: Glucagon receptor
    • Complex: Dual-agonist peptide
      • Protein or peptide: Dual-agonist peptide
    • Complex: Nanobody 35
      • Protein or peptide: Nanobody35

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Supramolecule #1: Glucagon Receptor complex

SupramoleculeName: Glucagon Receptor complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: Guanine nucleotide-binding protein G(s) subunit alpha isoforms sh...

SupramoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Receptor activity-modifying protein 3, Guanine nucleotide- ...Name: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Receptor activity-modifying protein 3, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Calcitonin gene-related peptide type 1 receptor, Glucagon Receptor
type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#3, #6
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)

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Supramolecule #3: Dual-agonist peptide

SupramoleculeName: Dual-agonist peptide / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #4
Source (natural)Organism: synthetic construct (others)

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Supramolecule #4: Nanobody 35

SupramoleculeName: Nanobody 35 / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #5
Source (natural)Organism: Lama glama (llama)
Recombinant expressionOrganism: Escherichia coli (E. coli)

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Macromolecule #1: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

MacromoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 45.683434 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE ...String:
MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE YQLIDCAQYF LDKIDVIKQA DYVPSDQDLL RCRVLTSGIF ETKFQVDKVN FHMFDVGAQR DERRKWIQCF ND VTAIIFV VASSSYNMVI REDNQTNRLQ AALKLFDSIW NNKWLRDTSV ILFLNKQDLL AEKVLAGKSK IEDYFPEFAR YTT PEDATP EPGEDPRVTR AKYFIRDEFL RISTASGDGR HYCYPHFTCA VDTENIRRVF NDCRDIIQRM HLRQYELL

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Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.41693 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String:
MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPNG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWN

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Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

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Macromolecule #4: Dual-agonist peptide

MacromoleculeName: Dual-agonist peptide / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 3.385689 KDa
SequenceString:
HSQGTFTSDY SKYLDEQAAK EFIAWLMNT

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Macromolecule #5: Nanobody35

MacromoleculeName: Nanobody35 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 15.140742 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
QVQLQESGGG LVQPGGSLRL SCAASGFTFS NYKMNWVRQA PGKGLEWVSD ISQSGASISY TGSVKGRFTI SRDNAKNTLY LQMNSLKPE DTAVYYCARC PAPFTRDCFD VTSTTYAYRG QGTQVTVSSH HHHHHEPEA

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Macromolecule #6: Glucagon receptor

MacromoleculeName: Glucagon receptor / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 54.068703 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MPPCQPQRPL LLLLLLLACQ PQVPSAQVMD FLFEKWKLYG DQCHHNLSLL PPPTELVCNR TFDKYSCWPD TPANTTANIS CPWYLPWHH KVQHRFVFKR CGPDGQWVRG PRGQPWRDAS QCQMDGEEIE VQKEVAKMYS SFQVMYTVGY SLSLGALLLA L AILGGLSK ...String:
MPPCQPQRPL LLLLLLLACQ PQVPSAQVMD FLFEKWKLYG DQCHHNLSLL PPPTELVCNR TFDKYSCWPD TPANTTANIS CPWYLPWHH KVQHRFVFKR CGPDGQWVRG PRGQPWRDAS QCQMDGEEIE VQKEVAKMYS SFQVMYTVGY SLSLGALLLA L AILGGLSK LHCTRNAIHA NLFASFVLKA SSVLVIDGLL RTRYSQKIGD DLSVSTWLSD GAVAGCRVAA VFMQYGIVAN YC WLLVEGL YLHNLLGLAT LPERSFFSLY LGIGWGAPML FVVPWAVVKC LFENVQCWTS NDNMGFWWIL RFPVFLAILI NFF IFVRIV QLLVAKLRAR QMHHTDYKFR LAKSTLTLIP LLGVHEVVFA FVTDEHAQGT LRSAKLFFDL FLSSFQGLLV AVLY CFLNK EVQSELRRRW HRWRLGKVLW EERNTSNHRA SSSPGHGPPS KELQFGRGGG SQDSSAETPL AGGLPRLAES PF

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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

Concentration2.5 mg/mL
BufferpH: 7.4
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Support film - Material: CARBON / Support film - topology: HOLEY ARRAY
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: 58.0 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

Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 175000
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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