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- PDB-9b65: Biased agonist bound CB1-Gi structure -

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Basic information

Entry
Database: PDB / ID: 9b65
TitleBiased agonist bound CB1-Gi structure
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Cannabinoid receptor 1
  • scFv16
KeywordsSIGNALING PROTEIN / G Protein-coupled receptor (GPCR) / G protein / Gi / biased ligand
Function / homology
Function and homology information


cannabinoid signaling pathway / retrograde trans-synaptic signaling by endocannabinoid / cannabinoid receptor activity / regulation of presynaptic cytosolic calcium ion concentration / Class A/1 (Rhodopsin-like receptors) / axonal fasciculation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration ...cannabinoid signaling pathway / retrograde trans-synaptic signaling by endocannabinoid / cannabinoid receptor activity / regulation of presynaptic cytosolic calcium ion concentration / Class A/1 (Rhodopsin-like receptors) / axonal fasciculation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / cellular response to forskolin / regulation of mitotic spindle organization / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / response to peptide hormone / GABA-ergic synapse / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / centriolar satellite / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / adenylate cyclase-activating G protein-coupled receptor 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 / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / 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 / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / GDP binding / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / ADP signalling through P2Y purinoceptor 1 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / 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 / G-protein beta-subunit binding / cellular response to prostaglandin E stimulus / actin cytoskeleton / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / glucose homeostasis / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / growth cone / retina development in camera-type eye / G protein activity / presynaptic membrane / GTPase binding / Ca2+ pathway / fibroblast proliferation / midbody / cell cortex / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / Ras protein signal transduction / mitochondrial outer membrane / Extra-nuclear estrogen signaling / cell population proliferation / ciliary basal body / membrane raft / G protein-coupled receptor signaling pathway / cell division / lysosomal membrane / GTPase activity / synapse / centrosome / GTP binding / protein-containing complex binding
Similarity search - Function
Cannabinoid receptor type 1 / 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 1 / 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 / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / 7 transmembrane receptor (rhodopsin family) / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 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
Chem-KCA / Cannabinoid receptor 1 / 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)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.03 Å
AuthorsRangari, V.A. / O'Brien, E.S. / Kobilka, B.K. / Krishna Kumar, K. / Majumdar, S.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)R34NS126036 United States
CitationJournal: Nature / Year: 2025
Title: A cryptic pocket in CB1 drives peripheral and functional selectivity.
Authors: Vipin Ashok Rangari / Evan S O'Brien / Alexander S Powers / Richard A Slivicki / Zachariah Bertels / Kevin Appourchaux / Deniz Aydin / Nokomis Ramos-Gonzalez / Juliet Mwirigi / Li Lin / ...Authors: Vipin Ashok Rangari / Evan S O'Brien / Alexander S Powers / Richard A Slivicki / Zachariah Bertels / Kevin Appourchaux / Deniz Aydin / Nokomis Ramos-Gonzalez / Juliet Mwirigi / Li Lin / Elizaveta Mangutov / Briana L Sobecks / Yaseen Awad-Agbaria / Manoj B Uphade / Jhoan Aguilar / Teja Nikhil Peddada / Yuki Shiimura / Xi-Ping Huang / Jakayla Folarin-Hines / Maria Payne / Anirudh Kalathil / Balazs R Varga / Brian K Kobilka / Amynah A Pradhan / Michael D Cameron / Kaavya Krishna Kumar / Ron O Dror / Robert W Gereau / Susruta Majumdar /
Abstract: The current opioid overdose epidemic highlights the urgent need to develop safer and more effective treatments for chronic pain. Cannabinoid receptor type 1 (CB1) is a promising non-opioid target for ...The current opioid overdose epidemic highlights the urgent need to develop safer and more effective treatments for chronic pain. Cannabinoid receptor type 1 (CB1) is a promising non-opioid target for pain relief, but its clinical use has been limited by centrally mediated psychoactivity and tolerance. We overcame both issues by designing peripherally restricted CB1 agonists that minimize arrestin recruitment. We achieved these goals by computationally designing positively charged derivatives of the potent CB1 agonist MDMB-Fubinaca. We designed these ligands to occupy a cryptic pocket identified through molecular dynamics simulations-an extended binding pocket that opens rarely and leads to the conserved signalling residue D (ref. ). We used structure determination, pharmacological assays and molecular dynamics simulations to verify the binding modes of these ligands and to determine the molecular mechanism by which they achieve this dampening of arrestin recruitment. Our lead ligand, VIP36, is highly peripherally restricted and demonstrates notable efficacy in three mouse pain models, with 100-fold dose separation between analgesic efficacy and centrally mediated side effects. VIP36 exerts analgesic efficacy through peripheral CB1 receptors and shows limited analgesic tolerance. These results show how targeting a cryptic pocket in a G-protein-coupled receptor can lead to enhanced peripheral selectivity, biased signalling, desired in vivo pharmacology and reduced adverse effects. This has substantial implications for chronic pain treatment but could also revolutionize the design of drugs targeting other G-protein-coupled receptors.
History
DepositionMar 23, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 5, 2025Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Mar 19, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.pdbx_database_id_PubMed / _citation.title ..._citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name / _em_admin.last_update
Revision 1.2Apr 16, 2025Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Guanine nucleotide-binding protein G(i) subunit alpha-1
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
R: Cannabinoid receptor 1
S: scFv16
hetero molecules


Theoretical massNumber of molelcules
Total (without water)169,8086
Polymers169,4115
Non-polymers3971
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABC

#1: Protein Guanine nucleotide-binding protein G(i) subunit alpha-1 / Adenylate cyclase-inhibiting G alpha protein


Mass: 40415.031 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P63096
#2: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 37671.102 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P62873
#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7861.143 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P59768

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Protein / Antibody / Non-polymers , 3 types, 3 molecules RS

#4: Protein Cannabinoid receptor 1 / CB1 / CANN6


Mass: 55678.535 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CNR1, CNR / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P21554
#5: Antibody scFv16


Mass: 27784.896 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Trichoplusia ni (cabbage looper)
#6: Chemical ChemComp-KCA / methyl N-{1-[(4-fluorophenyl)methyl]-1H-indazole-3-carbonyl}-3-methyl-L-valinate


Mass: 397.443 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C22H24FN3O3 / Comment: agonist*YM

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: CB1-Gi complex / Type: COMPLEX / Entity ID: #1-#5 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: DARK FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 58 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.03 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 161137 / Symmetry type: POINT
Atomic model buildingSpace: REAL

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