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- EMDB-44812: RO76 bound muOR-Gi1-scFv16 complex structure -

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Entry
Database: EMDB / ID: EMD-44812
TitleRO76 bound muOR-Gi1-scFv16 complex structure
Map dataauto sharpened map of RO76 bound muOR-Gi1-scFv16 complex
Sample
  • Complex: RO76 bound muOR-Gi1-scFv16 complex
    • 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: Mu-type opioid receptor
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • Protein or peptide: scFv16
  • Ligand: N-{[3-(hydroxymethyl)phenyl]methyl}-N-[1-(2-phenylethyl)piperidin-4-yl]propanamide
  • Ligand: water
KeywordsGPCR / G protein / opioid receptor / SIGNALING PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


Opioid Signalling / G-protein activation / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / Peptide ligand-binding receptors / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / G alpha (i) signalling events / negative regulation of nitric oxide biosynthetic process ...Opioid Signalling / G-protein activation / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / Peptide ligand-binding receptors / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / G alpha (i) signalling events / negative regulation of nitric oxide biosynthetic process / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / regulation of NMDA receptor activity / positive regulation of neurogenesis / negative regulation of cytosolic calcium ion concentration / transmission of nerve impulse / G-protein alpha-subunit binding / 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 / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / sensory perception of pain / presynaptic modulation of chemical synaptic transmission / cellular response to forskolin / regulation of mitotic spindle organization / Regulation of insulin secretion / locomotory behavior / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / GABA-ergic synapse / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / centriolar satellite / G-protein beta/gamma-subunit complex binding / 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 / 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 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / GDP binding / 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 / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / G alpha (12/13) signalling events / presynapse / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / G protein activity / retina development in camera-type eye / 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 / perikaryon / G alpha (q) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / Ras protein signal transduction / Extra-nuclear estrogen signaling / positive regulation of ERK1 and ERK2 cascade / cell population proliferation / endosome
Similarity search - Function
Mu opioid receptor / Opioid receptor / G-protein alpha subunit, group I / 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. ...Mu opioid receptor / Opioid receptor / G-protein alpha subunit, group I / 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
Mu-type opioid 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 speciesMus musculus (house mouse) / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsWang H / Majumdar S / Kobilka BK
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)DA057790 United States
CitationJournal: ACS Cent Sci / Year: 2024
Title: Signaling Modulation Mediated by Ligand Water Interactions with the Sodium Site at μOR.
Authors: Rohini S Ople / Nokomis Ramos-Gonzalez / Qiongyu Li / Briana L Sobecks / Deniz Aydin / Alexander S Powers / Abdelfattah Faouzi / Benjamin J Polacco / Sarah M Bernhard / Kevin Appourchaux / ...Authors: Rohini S Ople / Nokomis Ramos-Gonzalez / Qiongyu Li / Briana L Sobecks / Deniz Aydin / Alexander S Powers / Abdelfattah Faouzi / Benjamin J Polacco / Sarah M Bernhard / Kevin Appourchaux / Sashrik Sribhashyam / Shainnel O Eans / Bowen A Tsai / Ron O Dror / Balazs R Varga / Haoqing Wang / Ruth Hüttenhain / Jay P McLaughlin / Susruta Majumdar /
Abstract: The mu opioid receptor (μOR) is a target for clinically used analgesics. However, adverse effects, such as respiratory depression and physical dependence, necessitate the development of alternative ...The mu opioid receptor (μOR) is a target for clinically used analgesics. However, adverse effects, such as respiratory depression and physical dependence, necessitate the development of alternative treatments. Recently we reported a novel strategy to design functionally selective opioids by targeting the sodium binding allosteric site in μOR with a supraspinally active analgesic named . Presently, to improve systemic activity of this ligand, we used structure-based design, identifying a new ligand named where the flexible alkyl linker and polar guanidine guano group is swapped with a benzyl alcohol, and the sodium site is targeted indirectly through waters. A cryoEM structure of bound to the μOR-G complex confirmed that interacts with the sodium site residues through a water molecule, unlike which engages the sodium site directly. Signaling assays coupled with APEX based proximity labeling show binding in the sodium pocket modulates receptor efficacy and trafficking. In mice, was systemically active in tail withdrawal assays and showed reduced liabilities compared to those of morphine. In summary, we show that targeting water molecules in the sodium binding pocket may be an avenue to modulate signaling properties of opioids, and which may potentially be extended to other G-protein coupled receptors where this site is conserved.
History
DepositionMay 10, 2024-
Header (metadata) releaseSep 11, 2024-
Map releaseSep 11, 2024-
UpdateMay 21, 2025-
Current statusMay 21, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_44812.png

Downloads & links

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Map

FileDownload / File: emd_44812.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationauto sharpened map of RO76 bound muOR-Gi1-scFv16 complex
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesX (Sec.)Y (Row.)Z (Col.)
0.87 Å/pix.
x 320 pix.
= 277.664 Å		0.87 Å/pix.
x 320 pix.
= 277.664 Å		0.87 Å/pix.
x 320 pix.
= 277.664 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.8677 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 11.1
Minimum - Maximum-32.577198000000003 - 56.068604000000001
Average (Standard dev.)-0.000000000004143 (±1.0)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderZYX
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 277.664 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: half map of RO76 bound muOR-Gi1-scFv16 complex

Fileemd_44812_half_map_1.map
Annotationhalf map of RO76 bound muOR-Gi1-scFv16 complex
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map of RO76 bound muOR-Gi1-scFv16 complex

Fileemd_44812_half_map_2.map
Annotationhalf map of RO76 bound muOR-Gi1-scFv16 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 : RO76 bound muOR-Gi1-scFv16 complex

EntireName: RO76 bound muOR-Gi1-scFv16 complex
Components
  • Complex: RO76 bound muOR-Gi1-scFv16 complex
    • 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: Mu-type opioid receptor
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • Protein or peptide: scFv16
  • Ligand: N-{[3-(hydroxymethyl)phenyl]methyl}-N-[1-(2-phenylethyl)piperidin-4-yl]propanamide
  • Ligand: water

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Supramolecule #1: RO76 bound muOR-Gi1-scFv16 complex

SupramoleculeName: RO76 bound muOR-Gi1-scFv16 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Mus musculus (house mouse)

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Macromolecule #1: 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: 1 / 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 #2: 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: 2 / 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 #3: Mu-type opioid receptor

MacromoleculeName: Mu-type opioid receptor / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 39.995105 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: NISDCSDPLA PASCSPAPGS WLNLSHVDGN QSDPCGPNRT GLGENLYFQG SHSLCPQTGS PSMVTAITIM ALYSIVCVVG LFGNFLVMY VIVRYTKMKT ATNIYIFNLA LADALATSTL PFQSVNYLMG TWPFGNILCK IVISIDYYNM FTSIFTLCTM S VDRYIAVC ...String:
NISDCSDPLA PASCSPAPGS WLNLSHVDGN QSDPCGPNRT GLGENLYFQG SHSLCPQTGS PSMVTAITIM ALYSIVCVVG LFGNFLVMY VIVRYTKMKT ATNIYIFNLA LADALATSTL PFQSVNYLMG TWPFGNILCK IVISIDYYNM FTSIFTLCTM S VDRYIAVC HPVKALDFRT PRNAKIVNVC NWILSSAIGL PVMFMATTKY RQGSIDCTLT FSHPTWYWEN LLKICVFIFA FI MPVLIIT VCYGLMILRL KSVRMLSGSK EKDRNLRRIT RMVLVVVAVF IVCWTPIHIY VIIKALITIP ETTFQTVSWH FCI ALGYTN SCLNPVLYAF LDENFKRCFR EFCIPTSSTI

UniProtKB: Mu-type opioid receptor

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Macromolecule #4: Guanine nucleotide-binding protein G(i) subunit alpha-1

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 4 / 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 #5: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 5 / 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 #6: N-{[3-(hydroxymethyl)phenyl]methyl}-N-[1-(2-phenylethyl)piperidin...

MacromoleculeName: N-{[3-(hydroxymethyl)phenyl]methyl}-N-[1-(2-phenylethyl)piperidin-4-yl]propanamide
type: ligand / ID: 6 / Number of copies: 1 / Formula: A1AQ2
Molecular weightTheoretical: 380.523 Da

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Macromolecule #7: water

MacromoleculeName: water / type: ligand / ID: 7 / Number of copies: 1 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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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: 54.45 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 / 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

Particle selectionNumber selected: 2578269
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7u2l

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 127261
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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