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- EMDB-65947: Cryo-EM structure of pocket engineered OR52cs in its active state -

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Basic information

Entry
Database: EMDB / ID: EMD-65947
TitleCryo-EM structure of pocket engineered OR52cs in its active state
Map dataComposite map
Sample
  • Complex: Complex of pocket engineered OR52cs and hetertrimeric Gs and Nb35
    • Protein or peptide: Nanobody 35
    • Protein or peptide: Pocket engineered human consensus OR52 (OR52cs)
    • Protein or peptide: mini form Guanine nucleotide-binding protein G(s) subunit alpha
    • 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
  • Ligand: (3~{R})-3-methyl-3-oxidanyl-hexanoic acid
KeywordsOdorant receptor / MEMBRANE PROTEIN / MEMBRANE PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation ...Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G beta:gamma signalling through BTK / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / 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 / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / retina development in camera-type eye / GTPase binding / fibroblast proliferation / Ca2+ pathway / 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 / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol
Similarity search - Function
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, 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 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
Similarity search - Domain/homology
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
Similarity search - Component
Biological speciesHomo sapiens (human) / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.29 Å
AuthorsChoi CW / Choi H-J
Funding support Korea, Republic Of, 2 items
OrganizationGrant numberCountry
Samsung Science and Technology Foundation Korea, Republic Of
National Research Foundation (NRF, Korea) Korea, Republic Of
CitationJournal: To Be Published
Title: The structure of pocket engineered OR52cs in its active state
Authors: Choi CW / Choi H-J
History
DepositionAug 22, 2025-
Header (metadata) releaseJun 17, 2026-
Map releaseJun 17, 2026-
UpdateJun 17, 2026-
Current statusJun 17, 2026Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_65947.png

Downloads & links

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Map

FileDownload / File: emd_65947.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationComposite map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.82 Å/pix.
x 320 pix.
= 263.936 Å		0.82 Å/pix.
x 320 pix.
= 263.936 Å		0.82 Å/pix.
x 320 pix.
= 263.936 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.8248 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.36
Minimum - Maximum-1.7510393 - 3.39607
Average (Standard dev.)0.014972619 (±0.067417905)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 263.936 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : Complex of pocket engineered OR52cs and hetertrimeric Gs and Nb35

EntireName: Complex of pocket engineered OR52cs and hetertrimeric Gs and Nb35
Components
  • Complex: Complex of pocket engineered OR52cs and hetertrimeric Gs and Nb35
    • Protein or peptide: Nanobody 35
    • Protein or peptide: Pocket engineered human consensus OR52 (OR52cs)
    • Protein or peptide: mini form Guanine nucleotide-binding protein G(s) subunit alpha
    • 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
  • Ligand: (3~{R})-3-methyl-3-oxidanyl-hexanoic acid

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Supramolecule #1: Complex of pocket engineered OR52cs and hetertrimeric Gs and Nb35

SupramoleculeName: Complex of pocket engineered OR52cs and hetertrimeric Gs and Nb35
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Nanobody 35

MacromoleculeName: Nanobody 35 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 14.273889 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
VQLQESGGGL VQPGGSLRLS CAASGFTFSN YKMNWVRQAP GKGLEWVSDI SQSGASISYT GSVKGRFTIS RDNAKNTLYL QMNSLKPED TAVYYCARCP APFTRDCFDV TSTTYAYRGQ GTQVTVHHHH H

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Macromolecule #2: Pocket engineered human consensus OR52 (OR52cs)

MacromoleculeName: Pocket engineered human consensus OR52 (OR52cs) / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 36.534812 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DYKDDDDAID MPTSNHTSFH PSSFLLVGIP GLESVHIWIS IPFCAMYLIA LLGNSTLLFV IKTERSLHEP MYYFLAMLAA TDLVLSTST IPKMLAIFWF NLKEISFDAC LTQMFFIHSF TAMESGVLLA MAFDRYVAIC YPLRYTTILT NKVIGKIGMA V VLRAVLLV ...String:
DYKDDDDAID MPTSNHTSFH PSSFLLVGIP GLESVHIWIS IPFCAMYLIA LLGNSTLLFV IKTERSLHEP MYYFLAMLAA TDLVLSTST IPKMLAIFWF NLKEISFDAC LTQMFFIHSF TAMESGVLLA MAFDRYVAIC YPLRYTTILT NKVIGKIGMA V VLRAVLLV IPLPFLLKRL PFCGTNIIPH TYCEHMGVAK LACADIKVNI IYGLFNILLL VGLDVILIAL SYVLILRAVF RL PSQDARL KALSTCGSHI CVILAFYTPA FFSFLTHRFG HHIPPYIHIL LANLYLLVPP MLNPIIYGVK TKQIRERVLK IFF KKK

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Macromolecule #3: mini form Guanine nucleotide-binding protein G(s) subunit alpha

MacromoleculeName: mini form Guanine nucleotide-binding protein G(s) subunit alpha
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.907684 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: NSKTEDQRNE EKAQREANKK IEKQLQKDKQ VYRATHRLLL LGADNSGKST IVKQMRILHG GSGGSGGTSG IFETKFQVDK VNFHMFDVG GQRDERRKWI QCFNDVTAII FVVDSSDYNR LQEALNLFKS IWNNRWLRTI SVILFLNKQD LLAEKVLAGK S KIEDYFPE ...String:
NSKTEDQRNE EKAQREANKK IEKQLQKDKQ VYRATHRLLL LGADNSGKST IVKQMRILHG GSGGSGGTSG IFETKFQVDK VNFHMFDVG GQRDERRKWI QCFNDVTAII FVVDSSDYNR LQEALNLFKS IWNNRWLRTI SVILFLNKQD LLAEKVLAGK S KIEDYFPE FARYTTPEDA TPEPGEDPRV TRAKYFIRDE FLRISTASGD GRHYCYPHFT CAVDTENARR IFNDCRDIIQ RM HLRQYEL L

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Macromolecule #4: 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: 4 / 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 #5: 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: 5 / 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 G(I)/G(S)/G(O) subunit gamma-2

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Macromolecule #6: (3~{R})-3-methyl-3-oxidanyl-hexanoic acid

MacromoleculeName: (3~{R})-3-methyl-3-oxidanyl-hexanoic acid / type: ligand / ID: 6 / Number of copies: 1 / Formula: A1MBN
Molecular weightTheoretical: 146.184 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: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.03 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: OTHER / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: NONE
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.29 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 84454
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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