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- EMDB-34279: Cryo-EM structure of LEI-CB2-Gi complex -

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Entry
Database: EMDB / ID: EMD-34279
TitleCryo-EM structure of LEI-CB2-Gi complex
Map data
Sample
  • Complex: Ternary complex of Cannabinoid receptor 2 with Guanine nucleotide-binding protein and Single-chain variable fragment
    • 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 subunit gamma
    • Protein or peptide: Cannabinoid receptor 2
    • Protein or peptide: scFv16
  • Ligand: 1-[[4-[5-fluoranyl-6-[(oxan-4-ylamino)methyl]pyridin-2-yl]phenyl]methyl]-3-(2-methylpropyl)imidazolidine-2,4-dione
KeywordsGPCR / G protein / cryo-EM / membrane protein / STRUCTURAL PROTEIN
Function / homology
Function and homology information


cannabinoid receptor activity / negative regulation of mast cell activation / negative regulation of synaptic transmission, GABAergic / negative regulation of action potential / Class A/1 (Rhodopsin-like receptors) / regulation of metabolic process / leukocyte chemotaxis / extrinsic component of cytoplasmic side of plasma membrane / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / T cell migration ...cannabinoid receptor activity / negative regulation of mast cell activation / negative regulation of synaptic transmission, GABAergic / negative regulation of action potential / Class A/1 (Rhodopsin-like receptors) / regulation of metabolic process / leukocyte chemotaxis / extrinsic component of cytoplasmic side of plasma membrane / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / T cell migration / D2 dopamine receptor binding / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / G protein-coupled serotonin receptor binding / cellular response to forskolin / regulation of mitotic spindle organization / response to amphetamine / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Regulation of insulin secretion / G protein-coupled receptor binding / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Activation of the phototransduction cascade / adenylate cyclase-activating G protein-coupled receptor signaling pathway / 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 / Prostacyclin signalling through prostacyclin receptor / response to peptide hormone / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / GDP binding / cellular response to prostaglandin E stimulus / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / cell cortex / phospholipase C-activating G protein-coupled receptor signaling pathway / midbody / G alpha (i) signalling events / G alpha (s) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / G alpha (q) signalling events / perikaryon / Ras protein signal transduction / response to lipopolysaccharide / cell population proliferation / Extra-nuclear estrogen signaling / inflammatory response / immune response / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / centrosome / dendrite / synapse / protein-containing complex binding / GTP binding / nucleolus / magnesium ion binding / endoplasmic reticulum / signal transduction / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Cannabinoid receptor type 2 / Cannabinoid receptor 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 ...Cannabinoid receptor type 2 / Cannabinoid receptor 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 / 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. / 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
Guanine nucleotide-binding protein subunit gamma / Cannabinoid receptor 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)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.98 Å
AuthorsLiu ZJ / Hua T / Li XT / Chang H / Wu LJ
Funding support China, 2 items
OrganizationGrant numberCountry
National Science Foundation (NSF, China)32022038 China
National Natural Science Foundation of China (NSFC)31870744 China
CitationJournal: Nat Commun / Year: 2023
Title: Structural basis of selective cannabinoid CB receptor activation.
Authors: Xiaoting Li / Hao Chang / Jara Bouma / Laura V de Paus / Partha Mukhopadhyay / Janos Paloczi / Mohammed Mustafa / Cas van der Horst / Sanjay Sunil Kumar / Lijie Wu / Yanan Yu / Richard J B H ...Authors: Xiaoting Li / Hao Chang / Jara Bouma / Laura V de Paus / Partha Mukhopadhyay / Janos Paloczi / Mohammed Mustafa / Cas van der Horst / Sanjay Sunil Kumar / Lijie Wu / Yanan Yu / Richard J B H N van den Berg / Antonius P A Janssen / Aron Lichtman / Zhi-Jie Liu / Pal Pacher / Mario van der Stelt / Laura H Heitman / Tian Hua /
Abstract: Cannabinoid CB receptor (CBR) agonists are investigated as therapeutic agents in the clinic. However, their molecular mode-of-action is not fully understood. Here, we report the discovery of LEI-102, ...Cannabinoid CB receptor (CBR) agonists are investigated as therapeutic agents in the clinic. However, their molecular mode-of-action is not fully understood. Here, we report the discovery of LEI-102, a CBR agonist, used in conjunction with three other CBR ligands (APD371, HU308, and CP55,940) to investigate the selective CBR activation by binding kinetics, site-directed mutagenesis, and cryo-EM studies. We identify key residues for CBR activation. Highly lipophilic HU308 and the endocannabinoids, but not the more polar LEI-102, APD371, and CP55,940, reach the binding pocket through a membrane channel in TM1-TM7. Favorable physico-chemical properties of LEI-102 enable oral efficacy in a chemotherapy-induced nephropathy model. This study delineates the molecular mechanism of CBR activation by selective agonists and highlights the role of lipophilicity in CBR engagement. This may have implications for GPCR drug design and sheds light on their activation by endogenous ligands.
History
DepositionSep 13, 2022-
Header (metadata) releaseMay 10, 2023-
Map releaseMay 10, 2023-
UpdateNov 6, 2024-
Current statusNov 6, 2024Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_34279.png

Downloads & links

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Map

FileDownload / File: emd_34279.map.gz / Format: CCP4 / Size: 34.3 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
1.28 Å/pix.
x 208 pix.
= 266.24 Å		1.28 Å/pix.
x 208 pix.
= 266.24 Å		1.28 Å/pix.
x 208 pix.
= 266.24 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.28 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.18
Minimum - Maximum-0.0016572968 - 1.8580407
Average (Standard dev.)0.0010538709 (±0.023299191)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions208208208
Spacing208208208
CellA=B=C: 266.24 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_34279_half_map_1.map
Projections & Slices
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Density Histograms

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Histogram (log scale)

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Half map: #2

Fileemd_34279_half_map_2.map
Projections & Slices
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Sample components

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Entire : Ternary complex of Cannabinoid receptor 2 with Guanine nucleotide...

EntireName: Ternary complex of Cannabinoid receptor 2 with Guanine nucleotide-binding protein and Single-chain variable fragment
Components
  • Complex: Ternary complex of Cannabinoid receptor 2 with Guanine nucleotide-binding protein and Single-chain variable fragment
    • 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 subunit gamma
    • Protein or peptide: Cannabinoid receptor 2
    • Protein or peptide: scFv16
  • Ligand: 1-[[4-[5-fluoranyl-6-[(oxan-4-ylamino)methyl]pyridin-2-yl]phenyl]methyl]-3-(2-methylpropyl)imidazolidine-2,4-dione

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Supramolecule #1: Ternary complex of Cannabinoid receptor 2 with Guanine nucleotide...

SupramoleculeName: Ternary complex of Cannabinoid receptor 2 with Guanine nucleotide-binding protein and Single-chain variable fragment
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 140 kDa/nm

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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: Spodoptera frugiperda (fall armyworm)
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: 37.41693 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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

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

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Macromolecule #3: Guanine nucleotide-binding protein subunit gamma

MacromoleculeName: Guanine nucleotide-binding protein subunit gamma / 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: Spodoptera frugiperda (fall armyworm)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

UniProtKB: Guanine nucleotide-binding protein subunit gamma

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Macromolecule #4: Cannabinoid receptor 2

MacromoleculeName: Cannabinoid receptor 2 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.541391 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: PMKDYMILSG PQKTAVAVLC TLLGLLSALE NVAVLYLILS SHQLRRKPSY LFIGSLAGAD FLASVVFACS FVNFHVFHGV DSKAVFLLK IGSVTMTFTA SVGSLLLTAI DRYLCLRYPP SYKALLTRGR ALVTLGIMWV LSALVSYLPL MGWTCCPRPC S ELFPLIPN ...String:
PMKDYMILSG PQKTAVAVLC TLLGLLSALE NVAVLYLILS SHQLRRKPSY LFIGSLAGAD FLASVVFACS FVNFHVFHGV DSKAVFLLK IGSVTMTFTA SVGSLLLTAI DRYLCLRYPP SYKALLTRGR ALVTLGIMWV LSALVSYLPL MGWTCCPRPC S ELFPLIPN DYLLSWLLFI AFLFSGIIYT YGHVLWKAHQ HVASLSGHQD RQVPGMARMR LDVRLAKTLG LVLAVLLICW FP VLALMAH SLATTLSDQV KKAFAFCSML CLINSMVNPV IYALRSGEIR SSAHHCLAHW KKCVRGLGSE AKEEAPRSSV TET EADGKI TPWPDSRDLD LSDC

UniProtKB: Cannabinoid receptor 2

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Macromolecule #5: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 27.784896 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 #6: 1-[[4-[5-fluoranyl-6-[(oxan-4-ylamino)methyl]pyridin-2-yl]phenyl]...

MacromoleculeName: 1-[[4-[5-fluoranyl-6-[(oxan-4-ylamino)methyl]pyridin-2-yl]phenyl]methyl]-3-(2-methylpropyl)imidazolidine-2,4-dione
type: ligand / ID: 6 / Number of copies: 1 / Formula: KO8
Molecular weightTheoretical: 454.537 Da
Chemical component information

ChemComp-KO8:
1-[[4-[5-fluoranyl-6-[(oxan-4-ylamino)methyl]pyridin-2-yl]phenyl]methyl]-3-(2-methylpropyl)imidazolidine-2,4-dione

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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: 7.5
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
TemperatureMin: 70.0 K / Max: 70.0 K
Specialist opticsEnergy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 1.5 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
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:

6kpf

Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 2.98 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 762471
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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Atomic model buiding 1

Initial modelPDB ID:

6kpf


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT / Overall B value: 68
Output model

PDB-8gut:
Cryo-EM structure of LEI-CB2-Gi complex

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