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- EMDB-72001: Inactive-state naloxone-mu opioid receptor nanobody6 complex -

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Basic information

Entry
Database: EMDB / ID: EMD-72001
TitleInactive-state naloxone-mu opioid receptor nanobody6 complex
Map dataInactive-state naloxone-mu opioid receptor nanobody6 complex
Sample
  • Complex: Naloxone-mu opioid receptor in complex with Nb6M, NabFab and AntiFab Nb
    • Protein or peptide: Soluble cytochrome b562,Mu-type opioid receptor
    • Protein or peptide: Nanobody6
    • Protein or peptide: Anti-fab nanobody
    • Protein or peptide: Nab-fab light chain
    • Protein or peptide: Nab-fab heavy chain
  • Ligand: Naloxone
  • Ligand: SODIUM ION
KeywordsG protein coupled receptor / Mu Opioid receptor / Naloxone / MEMBRANE PROTEIN
Function / homology
Function and homology information


Opioid Signalling / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / regulation of cellular response to stress / G protein-coupled opioid receptor signaling pathway / behavioral response to ethanol / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / negative regulation of nitric oxide biosynthetic process / sensory perception ...Opioid Signalling / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / regulation of cellular response to stress / G protein-coupled opioid receptor signaling pathway / behavioral response to ethanol / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / negative regulation of nitric oxide biosynthetic process / sensory perception / neuropeptide binding / regulation of NMDA receptor activity / positive regulation of neurogenesis / negative regulation of cytosolic calcium ion concentration / G-protein alpha-subunit binding / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway / voltage-gated calcium channel activity / MECP2 regulates neuronal receptors and channels / sensory perception of pain / Peptide ligand-binding receptors / electron transport chain / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G-protein activation / G-protein beta-subunit binding / Interleukin-4 and Interleukin-13 signaling / G alpha (i) signalling events / perikaryon / phospholipase C-activating G protein-coupled receptor signaling pathway / periplasmic space / electron transfer activity / positive regulation of ERK1 and ERK2 cascade / endosome / neuron projection / G protein-coupled receptor signaling pathway / iron ion binding / negative regulation of cell population proliferation / axon / heme binding / synapse / dendrite / endoplasmic reticulum / Golgi apparatus / plasma membrane
Similarity search - Function
Mu opioid receptor / Opioid receptor / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / 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)
Similarity search - Domain/homology
Soluble cytochrome b562 / Mu-type opioid receptor
Similarity search - Component
Biological speciesHomo sapiens (human) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsGati C / Khan S / Han GW
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM144965 United States
National Institutes of Health/National Center for Complementary and Integrative Health (NIH/NCCIH)AT012075 United States
CitationJournal: Nature / Year: 2025
Title: Structural snapshots capture nucleotide release at the mu-opioid receptor
Authors: Khan S / Tyson AS / Ranjbar M / Zhang Z / Singh J / Han GW / Gati C
History
DepositionAug 6, 2025-
Header (metadata) releaseNov 12, 2025-
Map releaseNov 12, 2025-
UpdateNov 12, 2025-
Current statusNov 12, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_72001.png

Downloads & links

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Map

FileDownload / File: emd_72001.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationInactive-state naloxone-mu opioid receptor nanobody6 complex
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.29 Å/pix.
x 240 pix.
= 310.56 Å		1.29 Å/pix.
x 240 pix.
= 310.56 Å		1.29 Å/pix.
x 240 pix.
= 310.56 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.294 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.702
Minimum - Maximum-3.9563293 - 9.174792999999999
Average (Standard dev.)0.026594372 (±0.09480458)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 310.56 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : Naloxone-mu opioid receptor in complex with Nb6M, NabFab and Anti...

EntireName: Naloxone-mu opioid receptor in complex with Nb6M, NabFab and AntiFab Nb
Components
  • Complex: Naloxone-mu opioid receptor in complex with Nb6M, NabFab and AntiFab Nb
    • Protein or peptide: Soluble cytochrome b562,Mu-type opioid receptor
    • Protein or peptide: Nanobody6
    • Protein or peptide: Anti-fab nanobody
    • Protein or peptide: Nab-fab light chain
    • Protein or peptide: Nab-fab heavy chain
  • Ligand: Naloxone
  • Ligand: SODIUM ION

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Supramolecule #1: Naloxone-mu opioid receptor in complex with Nb6M, NabFab and Anti...

SupramoleculeName: Naloxone-mu opioid receptor in complex with Nb6M, NabFab and AntiFab Nb
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 130 kDa/nm

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Macromolecule #1: Soluble cytochrome b562,Mu-type opioid receptor

MacromoleculeName: Soluble cytochrome b562,Mu-type opioid receptor / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 69.550344 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD HDGDYKDHDI DYKDDDDKLH HHHHHHHHHL EVLFQGPGSG SADLEDNWET LNDNLKVIEK ADNAAQVKD ALTKMRAAAL DAQKATPPKL EDKSPDSPEM KDFRHGFDIL VGQIDDALKL ANEGKVKEAQ AAAEQLKTTR N AYIQKYLG ...String:
MKTIIALSYI FCLVFADYKD HDGDYKDHDI DYKDDDDKLH HHHHHHHHHL EVLFQGPGSG SADLEDNWET LNDNLKVIEK ADNAAQVKD ALTKMRAAAL DAQKATPPKL EDKSPDSPEM KDFRHGFDIL VGQIDDALKL ANEGKVKEAQ AAAEQLKTTR N AYIQKYLG TGSDSSAAPT NASNCTDALA YSSCSPAPSP GSWVNLSHLD GNLSDPCGPN RTDLGGRDSL CPPTGSPSMI TA ITIMALY SIVCVVGLFG NFLVMYVIVR YTKMKTATNI YIFNLALADA LATSTLPFQS VNYLMGTWPF GTILCKIVIS IDY YNMFTS IFTLCTMSVD RYIAVCHPVK ALDFRTPRNA KIINVCNWIL SSAIGLPVMF MATTKYRQGS IDCTLTFSHP TWYW ENLLK ICVFIFAFIM PVLIITVCYG LMILRLKSVR LLSGSREKDR NLRRITRMVL VVVAVFIVCW TPIHIYVIIK ALVTI PETT FQTVSWHFCI ALGYTNSCLN PVLYAFLDEN FKRCFREFCI PTSSNIEQQN STRIRQNTRD HPSTANTVDR TNHQLE NLE AETAPLPAAA LEVLFQGPGS WSHPQFEKGG GSGGGSGGSS AWSHPQFEKH HHHHHHHHH

UniProtKB: Soluble cytochrome b562, Mu-type opioid receptor

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Macromolecule #2: Nanobody6

MacromoleculeName: Nanobody6 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 14.418919 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
QRQLVESGGG LVQPGGSLRL SCAASGTIFR LYDMGWFRQA PGKEREGVAS ITSGGSTKYA DSVKGRFTIS RDNAKNTVYL QMNSLEPED TAVYYCNAEY RTGIWEELLD GWGKGTPVTV SSHHHHHHEP EA

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Macromolecule #3: Anti-fab nanobody

MacromoleculeName: Anti-fab nanobody / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 13.76411 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MGSQVQLQES GGGLVQPGGS LRLSCAASGR TISRYAMSWF RQAPGKEREF VAVARRSGDG AFYADSVQGR FTVSRDDAKN TVYLQMNSL KPEDTAVYYC AIDSDTFYSG SYDYWGQGTQ VTVSSLE

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Macromolecule #4: Nab-fab light chain

MacromoleculeName: Nab-fab light chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 23.258783 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: SDIQMTQSPS SLSASVGDRV TITCRASQSV SSAVAWYQQK PGKAPKLLIY SASSLYSGVP SRFSGSRSGT DFTLTISSLQ PEDFATYYC QQSSSSLITF GQGTKVEIKR TVAAPSVFIF PPSDSQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD ...String:
SDIQMTQSPS SLSASVGDRV TITCRASQSV SSAVAWYQQK PGKAPKLLIY SASSLYSGVP SRFSGSRSGT DFTLTISSLQ PEDFATYYC QQSSSSLITF GQGTKVEIKR TVAAPSVFIF PPSDSQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD SKDSTYSLSS TLTLSKADYE KHKVYACEVT HQGLSSPVTK SFNRGEC

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Macromolecule #5: Nab-fab heavy chain

MacromoleculeName: Nab-fab heavy chain / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 25.684463 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: EISEVQLVES GGGLVQPGGS LRLSCAASGF NFSYYSIHWV RQAPGKGLEW VAYISSSSSY TSYADSVKGR FTISADTSKN TAYLQMNSL RAEDTAVYYC ARGYQYWQYH ASWYWNGGLD YWGQGTLVTV SSASTKGPSV FPLAPSSKST SGGTAALGCL V KDYFPEPV ...String:
EISEVQLVES GGGLVQPGGS LRLSCAASGF NFSYYSIHWV RQAPGKGLEW VAYISSSSSY TSYADSVKGR FTISADTSKN TAYLQMNSL RAEDTAVYYC ARGYQYWQYH ASWYWNGGLD YWGQGTLVTV SSASTKGPSV FPLAPSSKST SGGTAALGCL V KDYFPEPV TVSWNSGALT SGVHTFPAVL QSSGLYSLSS VVTVPSSSLG TQTYICNVNH KPSNTKVDKK VEPKSCDKTH T

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Macromolecule #6: Naloxone

MacromoleculeName: Naloxone / type: ligand / ID: 6 / Number of copies: 1 / Formula: A1APV
Molecular weightTheoretical: 327.374 Da

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Macromolecule #7: SODIUM ION

MacromoleculeName: SODIUM ION / type: ligand / ID: 7 / Number of copies: 1
Molecular weightTheoretical: 22.99 Da

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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
Component:
ConcentrationFormulaName
40.0 mMHEPESHEPES
100.0 mMNaClsodium chloride
0.00075 %LMNGdetergent
0.00025 %GDNdetergent
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Support film - Material: GOLD / Support film - topology: HOLEY ARRAY
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 298 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Average electron dose: 51.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm
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

CTF correctionSoftware - Name: cryoSPARC (ver. v4.3.1) / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: INSILICO MODEL / In silico model: Ab initio
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. v4.3.1) / Number images used: 180003
Initial angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. v4.3.1)
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. v4.3.1)
Final 3D classificationNumber classes: 2 / Software - Name: cryoSPARC (ver. v4.3.1)

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