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- EMDB-35010: Human Consensus Olfactory Receptor OR52c in Complex with Octanoic... -

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Entry
Database: EMDB / ID: EMD-35010
TitleHuman Consensus Olfactory Receptor OR52c in Complex with Octanoic Acid (OCA) and G Protein
Map dataThis is a map of Human consensus olfactory receptor OR52c in complex with octanoic acid and G protein. It is a merged map of receptor-focused and G protein-focused local refinement maps.
Sample
  • Complex: Complex of Consensus Olfactory receptor OR52c in complex with Octanoic acid, G protein and Nanobody 35 (Nb35)
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • 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: Nanobody 35
    • Protein or peptide: Consensus Olfactory Receptor OR52c
  • Ligand: OCTANOIC ACID (CAPRYLIC ACID)
KeywordsOlfactory Receptor / G Protein / MEMBRANE PROTEIN / GPCR / Olfactory GPCR
Function / homology
Function and homology information


PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / D1 dopamine receptor binding / intracellular transport / renal water homeostasis / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / cellular response to glucagon stimulus ...PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / D1 dopamine receptor binding / intracellular transport / renal water homeostasis / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / cellular response to glucagon stimulus / adenylate cyclase activator activity / regulation of insulin secretion / trans-Golgi network membrane / negative regulation of inflammatory response to antigenic stimulus / bone development / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G protein activity / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / platelet aggregation / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / cognition / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / 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 / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / sensory perception of smell / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / positive regulation of cold-induced thermogenesis / retina development in camera-type eye / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / GTP binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
G-protein alpha subunit, group S / 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 ...G-protein alpha subunit, group S / 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 / 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. / WD domain, G-beta repeat / 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
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(s) subunit alpha isoforms short
Similarity search - Component
Biological speciesHomo sapiens (human) / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.97 Å
AuthorsChoi CW / Bae J / Choi H-J / Kim J
Funding support Korea, Republic Of, 1 items
OrganizationGrant numberCountry
Samsung Science and Technology FoundationSSTF-BA1901-09 Korea, Republic Of
CitationJournal: Nat Commun / Year: 2023
Title: Understanding the molecular mechanisms of odorant binding and activation of the human OR52 family.
Authors: Chulwon Choi / Jungnam Bae / Seonghan Kim / Seho Lee / Hyunook Kang / Jinuk Kim / Injin Bang / Kiheon Kim / Won-Ki Huh / Chaok Seok / Hahnbeom Park / Wonpil Im / Hee-Jung Choi /
Abstract: Structural and mechanistic studies on human odorant receptors (ORs), key in olfactory signaling, are challenging because of their low surface expression in heterologous cells. The recent structure of ...Structural and mechanistic studies on human odorant receptors (ORs), key in olfactory signaling, are challenging because of their low surface expression in heterologous cells. The recent structure of OR51E2 bound to propionate provided molecular insight into odorant recognition, but the lack of an inactive OR structure limited understanding of the activation mechanism of ORs upon odorant binding. Here, we determined the cryo-electron microscopy structures of consensus OR52 (OR52), a representative of the OR52 family, in the ligand-free (apo) and octanoate-bound states. The apo structure of OR52 reveals a large opening between transmembrane helices (TMs) 5 and 6. A comparison between the apo and active structures of OR52 demonstrates the inward and outward movements of the extracellular and intracellular segments of TM6, respectively. These results, combined with molecular dynamics simulations and signaling assays, shed light on the molecular mechanisms of odorant binding and activation of the OR52 family.
History
DepositionDec 21, 2022-
Header (metadata) releaseDec 20, 2023-
Map releaseDec 20, 2023-
UpdateDec 20, 2023-
Current statusDec 20, 2023Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

Downloads & links

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Map

FileDownload / File: emd_35010.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationThis is a map of Human consensus olfactory receptor OR52c in complex with octanoic acid and G protein. It is a merged map of receptor-focused and G protein-focused local refinement maps.
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.85 Å/pix.
x 400 pix.
= 340.4 Å
0.85 Å/pix.
x 400 pix.
= 340.4 Å
0.85 Å/pix.
x 400 pix.
= 340.4 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.851 Å
Density
Contour LevelBy AUTHOR: 0.7
Minimum - Maximum-2.7104404 - 5.018383
Average (Standard dev.)0.024314273 (±0.079772666)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 340.4 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: This is a map of Human consensus olfactory...

Fileemd_35010_additional_1.map
AnnotationThis is a map of Human consensus olfactory receptor OR52c in complex with octanoic acid and G protein. It is a receptor-focused local refinement sharp map.
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Additional map: This is a map of Human consensus olfactory...

Fileemd_35010_additional_2.map
AnnotationThis is a map of Human consensus olfactory receptor OR52c in complex with octanoic acid and G protein. It is a receptor-focused local refinement sharp map.
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: This is a map of Human consensus olfactory...

Fileemd_35010_half_map_1.map
AnnotationThis is a map of Human consensus olfactory receptor OR52c in complex with octanoic acid and G protein. It is a half B map of NU-refinement map.
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: This is a map of Human consensus olfactory...

Fileemd_35010_half_map_2.map
AnnotationThis is a map of Human consensus olfactory receptor OR52c in complex with octanoic acid and G protein. It is a half A map of NU-refinement map.
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Sample components

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Entire : Complex of Consensus Olfactory receptor OR52c in complex with Oct...

EntireName: Complex of Consensus Olfactory receptor OR52c in complex with Octanoic acid, G protein and Nanobody 35 (Nb35)
Components
  • Complex: Complex of Consensus Olfactory receptor OR52c in complex with Octanoic acid, G protein and Nanobody 35 (Nb35)
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • 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: Nanobody 35
    • Protein or peptide: Consensus Olfactory Receptor OR52c
  • Ligand: OCTANOIC ACID (CAPRYLIC ACID)

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Supramolecule #1: Complex of Consensus Olfactory receptor OR52c in complex with Oct...

SupramoleculeName: Complex of Consensus Olfactory receptor OR52c in complex with Octanoic acid, G protein and Nanobody 35 (Nb35)
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 140 KDa

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Macromolecule #1: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

MacromoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 45.891809 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: HHHHHHLEVL FQGPGSLGNS KTEDQRNEEK AQREANKKIE KQLQKDKQVY RATHRLLLLG AGESGKSTIV KQMRILHVNG FNGDSEKAT KVQDIKNNLK EAIETIVAAM SNLVPPVELA NPENQFRVDY ILSVMNVPDF DFPPEFYEHA KALWEDEGVR A CYERSNEY ...String:
HHHHHHLEVL FQGPGSLGNS KTEDQRNEEK AQREANKKIE KQLQKDKQVY RATHRLLLLG AGESGKSTIV KQMRILHVNG FNGDSEKAT KVQDIKNNLK EAIETIVAAM SNLVPPVELA NPENQFRVDY ILSVMNVPDF DFPPEFYEHA KALWEDEGVR A CYERSNEY QLIDCAQYFL DKIDVIKQAD YVPSDQDLLR CRVLTSGIFE TKFQVDKVNF HMFDVGGQRD ERRKWIQCFN DV TAIIFVV ASSSYNMVIR EDNQTNRLQE ALNLFKSIWN NRWLRTISVI LFLNKQDLLA EKVLAGKSKI EDYFPEFARY TTP EDATPE PGEDPRVTRA KYFIRDEFLR ISTASGDGRH YCYPHFTCAV DTENIRRVFN DCRDIIQRMH LRQYELL

UniProtKB: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

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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: 39.286891 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: HHHHHHLEVL FQGPGSSGSE LDQLRQEAEQ LKNQIRDARK ACADATLSQI TNNIDPVGRI QMRTRRTLRG HLAKIYAMHW GTDSRLLVS ASQDGKLIIW DSYTTNKVHA IPLRSSWVMT CAYAPSGNYV ACGGLDNICS IYNLKTREGN VRVSRELAGH T GYLSCCRF ...String:
HHHHHHLEVL FQGPGSSGSE LDQLRQEAEQ LKNQIRDARK ACADATLSQI TNNIDPVGRI QMRTRRTLRG HLAKIYAMHW GTDSRLLVS ASQDGKLIIW DSYTTNKVHA IPLRSSWVMT CAYAPSGNYV ACGGLDNICS IYNLKTREGN VRVSRELAGH T GYLSCCRF LDDNQIVTSS GDTTCALWDI ETGQQTTTFT GHTGDVMSLS LAPDTRLFVS GACDASAKLW DVREGMCRQT FT GHESDIN AICFFPNGNA FATGSDDATC RLFDLRADQE LMTYSHDNII CGITSVSFSK SGRLLLAGYD DFNCNVWDAL KAD RAGVLA GHDNRVSCLG VTDDGMAVAT GSWDSFLKIW N

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: 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 #4: Nanobody 35

MacromoleculeName: Nanobody 35 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 15.140742 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
QVQLQESGGG LVQPGGSLRL SCAASGFTFS NYKMNWVRQA PGKGLEWVSD ISQSGASISY TGSVKGRFTI SRDNAKNTLY LQMNSLKPE DTAVYYCARC PAPFTRDCFD VTSTTYAYRG QGTQVTVSSH HHHHHEPEA

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Macromolecule #5: Consensus Olfactory Receptor OR52c

MacromoleculeName: Consensus Olfactory Receptor OR52c / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 36.49775 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DYKDDDDAID MPTSNHTSFH PSSFLLVGIP GLESVHIWIS IPFCAMYLIA LLGNSTLLFV IKTERSLHEP MYYFLAMLAA TDLVLSTST IPKMLAIFWF NLKEISFDAC LTQMFFIHSF TGMESGVLLA MAFDRYVAIC YPLRYTTILT NKVIGKIGMA V VLRAVLLV ...String:
DYKDDDDAID MPTSNHTSFH PSSFLLVGIP GLESVHIWIS IPFCAMYLIA LLGNSTLLFV IKTERSLHEP MYYFLAMLAA TDLVLSTST IPKMLAIFWF NLKEISFDAC LTQMFFIHSF TGMESGVLLA MAFDRYVAIC YPLRYTTILT NKVIGKIGMA V VLRAVLLV IPFPFLLKRL PFCGTNIIPH TYCEHMGVAK LACADIKVNI IYGLFVALLI VGLDVILIAL SYVLILRAVF RL PSQDARL KALSTCGSHI CVILAFYTPA FFSFLTHRFG HHIPPYIHIL LANLYLLVPP MLNPIIYGVK TKQIRERVLK IFF KKK

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Macromolecule #6: OCTANOIC ACID (CAPRYLIC ACID)

MacromoleculeName: OCTANOIC ACID (CAPRYLIC ACID) / type: ligand / ID: 6 / Number of copies: 1 / Formula: OCA
Molecular weightTheoretical: 144.211 Da
Chemical component information

ChemComp-OCA:
OCTANOIC ACID (CAPRYLIC ACID)

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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

Concentration5 mg/mL
BufferpH: 8
Component:
ConcentrationFormulaName
20.0 mMNH2C(CH2OH)3Tris(hydroxymethyl)aminomethane
100.0 mMNaClSodium Chloride
0.005 %C47H88O22Lauryl Maltose Neopentyl Glycol
0.0005 %C31H50O4Cholesteryl hemisuccinate
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 11 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV / Details: blot time 3 seconds.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Digitization - Dimensions - Width: 5760 pixel / Digitization - Dimensions - Height: 4092 pixel / 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: 2.0 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 105000
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Details: Initial 3D model was generated with Ab-initio Reconstruction tool in cryoSPARC software.
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.97 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 126896
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 3.3.2)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 3.3.2)
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL
Output model

PDB-8hti:
Human Consensus Olfactory Receptor OR52c in Complex with Octanoic Acid (OCA) and G Protein

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