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- EMDB-44925: Structure of the LM189-Bound beta2AR-Gi Complex -

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Basic information

Entry
Database: EMDB / ID: EMD-44925
TitleStructure of the LM189-Bound beta2AR-Gi Complex
Map dataautosharpened map of lm189 bound b2gi complex
Sample
  • Complex: beta2 adrenergic receptor-Gi protein complex
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • 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: scFv16
    • Protein or peptide: Beta-2 adrenergic receptor
  • Ligand: CHOLESTEROL
  • Ligand: 4-[(1R)-1-hydroxy-2-{[6-(4-phenylbutoxy)hexyl]amino}ethyl]benzene-1,2-diol
  • Ligand: N-[(3R)-4-(4-tert-butylphenyl)-3-({2-[(4-methoxyphenyl)sulfanyl]-5-[methyl(propan-2-yl)sulfamoyl]benzene-1-carbonyl}amino)butanoyl]glycine
KeywordsGPCR / SIGNALING PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


positive regulation of mini excitatory postsynaptic potential / beta2-adrenergic receptor activity / negative regulation of smooth muscle contraction / AMPA selective glutamate receptor signaling pathway / positive regulation of autophagosome maturation / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / heat generation / norepinephrine binding / Adrenoceptors / positive regulation of lipophagy ...positive regulation of mini excitatory postsynaptic potential / beta2-adrenergic receptor activity / negative regulation of smooth muscle contraction / AMPA selective glutamate receptor signaling pathway / positive regulation of autophagosome maturation / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / heat generation / norepinephrine binding / Adrenoceptors / positive regulation of lipophagy / negative regulation of multicellular organism growth / negative regulation of G protein-coupled receptor signaling pathway / endosome to lysosome transport / adrenergic receptor signaling pathway / response to psychosocial stress / diet induced thermogenesis / positive regulation of cAMP/PKA signal transduction / adenylate cyclase binding / smooth muscle contraction / bone resorption / potassium channel regulator activity / positive regulation of bone mineralization / neuronal dense core vesicle / brown fat cell differentiation / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / intercellular bridge / Adenylate cyclase inhibitory pathway / T cell migration / regulation of sodium ion transport / adenylate cyclase-activating adrenergic receptor signaling pathway / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / cellular response to forskolin / receptor-mediated endocytosis / response to cold / regulation of mitotic spindle organization / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / clathrin-coated endocytic vesicle membrane / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / 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 / cellular response to amyloid-beta / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / mitotic spindle / GDP binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / Cargo recognition for clathrin-mediated endocytosis / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / Clathrin-mediated endocytosis / positive regulation of cold-induced thermogenesis / amyloid-beta binding / retina development in camera-type eye / G protein activity / microtubule cytoskeleton / GTPase binding / Ca2+ pathway
Similarity search - Function
Beta 2 adrenoceptor / Adrenoceptor family / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit ...Beta 2 adrenoceptor / Adrenoceptor family / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / 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. / 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
Beta-2 adrenergic 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(i) subunit alpha-1
Similarity search - Component
Biological speciesHomo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsCasiraghi M / Wang H / Kobilka BK
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)NS028471 United States
CitationJournal: Sci Adv / Year: 2025
Title: Structure and dynamics determine G protein coupling specificity at a class A GPCR.
Authors: Marina Casiraghi / Haoqing Wang / Patrick C Brennan / Chris Habrian / Harald Hübner / Maximilian F Schmidt / Luis Maul / Biswaranjan Pani / Sherif M F M Bahriz / Bing Xu / Nico Staffen / ...Authors: Marina Casiraghi / Haoqing Wang / Patrick C Brennan / Chris Habrian / Harald Hübner / Maximilian F Schmidt / Luis Maul / Biswaranjan Pani / Sherif M F M Bahriz / Bing Xu / Nico Staffen / Tufa E Assafa / Bohan Chen / Elizabeth White / Roger K Sunahara / Asuka Inoue / Yang K Xiang / Robert J Lefkowitz / Ehud Y Isacoff / Nathaniel Nucci / Peter Gmeiner / Michael T Lerch / Brian K Kobilka /
Abstract: G protein-coupled receptors (GPCRs) exhibit varying degrees of selectivity for different G protein isoforms. Despite the abundant structures of GPCR-G protein complexes, little is known about the ...G protein-coupled receptors (GPCRs) exhibit varying degrees of selectivity for different G protein isoforms. Despite the abundant structures of GPCR-G protein complexes, little is known about the mechanism of G protein coupling specificity. The β-adrenergic receptor is an example of GPCR with high selectivity for Gαs, the stimulatory G protein for adenylyl cyclase, and much weaker for the Gαi family of G proteins inhibiting adenylyl cyclase. By developing a Gαi-biased agonist (LM189), we provide structural and biophysical evidence supporting that distinct conformations at ICL2 and TM6 are required for coupling of the different G protein subtypes Gαs and Gαi. These results deepen our understanding of G protein specificity and bias and can accelerate the design of ligands that select for preferred signaling pathways.
History
DepositionMay 17, 2024-
Header (metadata) releaseMay 28, 2025-
Map releaseMay 28, 2025-
UpdateMay 28, 2025-
Current statusMay 28, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_44925.png

Downloads & links

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Map

FileDownload / File: emd_44925.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationautosharpened map of lm189 bound b2gi complex
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesX (Sec.)Y (Row.)Z (Col.)
1.11 Å/pix.
x 256 pix.
= 284.416 Å		1.11 Å/pix.
x 256 pix.
= 284.416 Å		1.11 Å/pix.
x 256 pix.
= 284.416 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.111 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 5.47
Minimum - Maximum-35.884166999999998 - 59.126873000000003
Average (Standard dev.)-0.000000000000925 (±1.0)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderZYX
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 284.416 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: half map of lm189 bound b2gi complex

Fileemd_44925_half_map_1.map
Annotationhalf map of lm189 bound b2gi complex
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map of lm189 bound b2gi complex

Fileemd_44925_half_map_2.map
Annotationhalf map of lm189 bound b2gi complex
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : beta2 adrenergic receptor-Gi protein complex

EntireName: beta2 adrenergic receptor-Gi protein complex
Components
  • Complex: beta2 adrenergic receptor-Gi protein complex
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • 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: scFv16
    • Protein or peptide: Beta-2 adrenergic receptor
  • Ligand: CHOLESTEROL
  • Ligand: 4-[(1R)-1-hydroxy-2-{[6-(4-phenylbutoxy)hexyl]amino}ethyl]benzene-1,2-diol
  • Ligand: N-[(3R)-4-(4-tert-butylphenyl)-3-({2-[(4-methoxyphenyl)sulfanyl]-5-[methyl(propan-2-yl)sulfamoyl]benzene-1-carbonyl}amino)butanoyl]glycine

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Supramolecule #1: beta2 adrenergic receptor-Gi protein complex

SupramoleculeName: beta2 adrenergic receptor-Gi protein complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Guanine nucleotide-binding protein G(i) subunit alpha-1

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.415031 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGGQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHESM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCA TDTKNVQFVF DAVTDVIIKN NLKDCGLF

UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1

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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: 37.671102 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: PGSSGSELDQ LRQEAEQLKN QIRDARKACA DATLSQITNN IDPVGRIQMR TRRTLRGHLA KIYAMHWGTD SRLLVSASQD GKLIIWDSY TTNKVHAIPL RSSWVMTCAY APSGNYVACG GLDNICSIYN LKTREGNVRV SRELAGHTGY LSCCRFLDDN Q IVTSSGDT ...String:
PGSSGSELDQ LRQEAEQLKN QIRDARKACA DATLSQITNN IDPVGRIQMR TRRTLRGHLA KIYAMHWGTD SRLLVSASQD GKLIIWDSY TTNKVHAIPL RSSWVMTCAY APSGNYVACG GLDNICSIYN LKTREGNVRV SRELAGHTGY LSCCRFLDDN Q IVTSSGDT TCALWDIETG QQTTTFTGHT GDVMSLSLAP DTRLFVSGAC DASAKLWDVR EGMCRQTFTG HESDINAICF FP NGNAFAT GSDDATCRLF DLRADQELMT YSHDNIICGI TSVSFSKSGR LLLAGYDDFN CNVWDALKAD RAGVLAGHDN RVS CLGVTD DGMAVATGSW DSFLKIWN

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

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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

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

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Macromolecule #4: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 27.784896 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...String:
DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL KAAAHHHHHH HH

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Macromolecule #5: Beta-2 adrenergic receptor

MacromoleculeName: Beta-2 adrenergic receptor / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.767242 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD DDDAMGQPGN GSAFLLAPNR SHAPDHDVEN LYFQGTQQRD EVWVVGMGIV MSLIVLAIVF GNVLVITAI AKFERLQTVT NYFITSLACA DLVMGLAVVP FGAAHILTKT WTFGNFWCEF WTSIDVLCVT ASIETLCVIA V DRYFAITS ...String:
MKTIIALSYI FCLVFADYKD DDDAMGQPGN GSAFLLAPNR SHAPDHDVEN LYFQGTQQRD EVWVVGMGIV MSLIVLAIVF GNVLVITAI AKFERLQTVT NYFITSLACA DLVMGLAVVP FGAAHILTKT WTFGNFWCEF WTSIDVLCVT ASIETLCVIA V DRYFAITS PFKYQSLLTK NKARVIILMV WIVSGLTSFL PIQMHWYRAT HQEAINCYAE ETCCDFFTNQ AYAIASSIVS FY VPLVIMV FVYSRVFQEA KRQLQKIDKS EGRFHVQNLS QVEQDGRTGH GLRRSSKFCL KEHKALKTLG IIMGTFTLCW LPF FIVNIV HVIQDNLIRK EVYILLNWIG YVNSGFNPLI YCRSPDFRIA FQELLCLRRS SLKAYGNGYS SNGNTGEQSG LEVL FQGPY HVEQEKENKL LAEDLPGTED FVGHQGTVPS DNIDSQGRNA STNDSLLETS QVAPA

UniProtKB: Beta-2 adrenergic receptor

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Macromolecule #6: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 6 / Number of copies: 3 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL

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Macromolecule #7: 4-[(1R)-1-hydroxy-2-{[6-(4-phenylbutoxy)hexyl]amino}ethyl]benzene...

MacromoleculeName: 4-[(1R)-1-hydroxy-2-{[6-(4-phenylbutoxy)hexyl]amino}ethyl]benzene-1,2-diol
type: ligand / ID: 7 / Number of copies: 1 / Formula: A1ASM
Molecular weightTheoretical: 401.539 Da

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Macromolecule #8: N-[(3R)-4-(4-tert-butylphenyl)-3-({2-[(4-methoxyphenyl)sulfanyl]-...

MacromoleculeName: N-[(3R)-4-(4-tert-butylphenyl)-3-({2-[(4-methoxyphenyl)sulfanyl]-5-[methyl(propan-2-yl)sulfamoyl]benzene-1-carbonyl}amino)butanoyl]glycine
type: ligand / ID: 8 / Number of copies: 1 / Formula: KBY
Molecular weightTheoretical: 669.851 Da
Chemical component information

ChemComp-KBY:
N-[(3R)-4-(4-tert-butylphenyl)-3-({2-[(4-methoxyphenyl)sulfanyl]-5-[methyl(propan-2-yl)sulfamoyl]benzene-1-carbonyl}amino)butanoyl]glycine

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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: 7
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 52.5 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.7000000000000001 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

3sn6

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 477875
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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