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Basic information

Entry
Database: EMDB / ID: EMD-71429
TitlePCP bound kappa-opioid receptor in complex with Gi1
Map data
Sample
  • Complex: The cryo-EM structure of KOR and PCP Ligand: PCP
    • Protein or peptide: Soluble cytochrome b562,Kappa-type opioid receptor chimera
    • 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: Guanine nucleotide-binding protein G(i) subunit alpha-1
  • Ligand: 1-(PHENYL-1-CYCLOHEXYL)PIPERIDINE
Keywordskappa opioid receptor / SIGNALING PROTEIN
Biological speciesHomo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.63 Å
AuthorsJiang QR / Han JM / Fay JF / Che T
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)R01DA058020 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM143061 United States
CitationJournal: Nat.Struct.Mol.Biol. / Year: 2026
Title: Structural basis of opioid receptor activation by PCP and ketamine.
Authors: Jiang Q / Han J / Fine EJ / Ramos-Gonzalez N / Rangari VA / Ruiz MV / Critz ML / Suomivuori CM / Wang J / Albert TL / Whiddon K / Li K / Robertson MJ / Huang XP / Land BB / Majumdar S / Fay JF / Dror RO / Che T
History
DepositionJun 25, 2025-
Header (metadata) releaseJul 1, 2026-
Map releaseJul 1, 2026-
UpdateJul 1, 2026-
Current statusJul 1, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_71429.png

Downloads & links

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Map

FileReleased
Voxel sizeX=Y=Z: 0.828 Å
Density
Contour LevelBy AUTHOR: 0.055
Minimum - Maximum-0.0771525 - 2.5817964
Average (Standard dev.)0.0012255067 (±0.023882052)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 238.464 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : The cryo-EM structure of KOR and PCP Ligand: PCP

EntireName: The cryo-EM structure of KOR and PCP Ligand: PCP
Components
  • Complex: The cryo-EM structure of KOR and PCP Ligand: PCP
    • Protein or peptide: Soluble cytochrome b562,Kappa-type opioid receptor chimera
    • 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: Guanine nucleotide-binding protein G(i) subunit alpha-1
  • Ligand: 1-(PHENYL-1-CYCLOHEXYL)PIPERIDINE

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Supramolecule #1: The cryo-EM structure of KOR and PCP Ligand: PCP

SupramoleculeName: The cryo-EM structure of KOR and PCP Ligand: PCP / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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

MacromoleculeName: Soluble cytochrome b562,Kappa-type opioid receptor chimera
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 53.793598 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHE NLYFQGGTTM ADLEDNWETL NDNLKVIEKA DNAAQVKDAL TKMRAAALD AQKATPPKLE DKSPDSPEMK DFRHGFDILV GQIDDALKLA NEGKVKEAQA AAEQLKTTRN AYIQKYLGSL E VLFQGPGS ...String:
MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHE NLYFQGGTTM ADLEDNWETL NDNLKVIEKA DNAAQVKDAL TKMRAAALD AQKATPPKLE DKSPDSPEMK DFRHGFDILV GQIDDALKLA NEGKVKEAQA AAEQLKTTRN AYIQKYLGSL E VLFQGPGS GSGISPAIPV IITAVYSVVF VVGLVGNSLV MFVIIRYTKM KTATNIYIFN LALADALVTT TMPFQSTVYL MN SWPFGDV LCKIVLSIDY YNMFTSIFTL TMMSVDRYIA VCHPVKALDF RTPLKAKIIN ICIWLLSSSV GISAIVLGGT KVR EDVDVI ECSLQFPDDD YSWWDLFMKI CVFIFAFVIP VLIIIVCYTL MILRLKSVRL LSGSREKDRN LRRITRLVLV VVAV FVVCW TPIHIFILVE ALGSTSHSTA ALSSYYFCIA LGYTNSSLNP ILYAFLDENF KRCFRDFCFP LKMRMERQST S

UniProtKB: Soluble cytochrome b562, Kappa-type opioid receptor

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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: 39.418086 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR ...String:
MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR FLDDNQIVTS SGDTTCALWD IETGQQTTTF TGHTGDVMSL SLAPDTRLFV SGACDASAKL WDVREGMCRQ TF TGHESDI NAICFFPNGN AFATGSDDAT CRLFDLRADQ ELMTYSHDNI ICGITSVSFS KSGRLLLAGY DDFNCNVWDA LKA DRAGVL AGHDNRVSCL GVTDDGMAVA TGSWDSFLKI WN

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: 8.506765 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI LGSAGSAGSA

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: 32.754652 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFADV QLVESGGGLV QPGGSRKLSC SASGFAFSSF GMHWVRQAPE KGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSEDT AMYYCVRSIY YYGSSPFDFW GQGTTLTVSS G GGGSGGGG ...String:
MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFADV QLVESGGGLV QPGGSRKLSC SASGFAFSSF GMHWVRQAPE KGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSEDT AMYYCVRSIY YYGSSPFDFW GQGTTLTVSS G GGGSGGGG SGGGGSDIVM TQATSSVPVT PGESVSISCR SSKSLLHSNG NTYLYWFLQR PGQSPQLLIY RMSNLASGVP DR FSGSGSG TAFTLTISRL EAEDVGVYYC MQHLEYPLTF GAGTKLELKA AALEVLFQGP HHHHHHHH

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Macromolecule #5: Guanine nucleotide-binding protein G(i) subunit alpha-1

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.414047 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGAQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHASM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKDCGLF

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

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Macromolecule #6: 1-(PHENYL-1-CYCLOHEXYL)PIPERIDINE

MacromoleculeName: 1-(PHENYL-1-CYCLOHEXYL)PIPERIDINE / type: ligand / ID: 6 / Number of copies: 1 / Formula: 1PC
Molecular weightTheoretical: 243.387 Da
Chemical component information

ChemComp-1PC:
1-(PHENYL-1-CYCLOHEXYL)PIPERIDINE

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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 / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI POLARA 300
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.63 µm / Nominal defocus min: 0.11 µm
Experimental equipment
Model: Tecnai Polara / 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:

8dzp

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.63 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 720893
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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