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- EMDB-62129: Cryo-EM structure of GPCR16-Gi2 complex -

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Basic information

Entry
Database: EMDB / ID: EMD-62129
TitleCryo-EM structure of GPCR16-Gi2 complex
Map data
Sample
  • Complex: tas2r16 with gi2
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-2
    • 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: exo-alpha-sialidase,Taste receptor type 2 member 16,LgBiT
  • Ligand: 2-(hydroxymethyl)phenyl beta-D-glucopyranoside
KeywordsTas2R16 / GPCR / Gi2 / Salicin / SIGNALING PROTEIN / SIGNALING PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


bitter taste receptor activity / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / detection of chemical stimulus involved in sensory perception of bitter taste / negative regulation of calcium ion-dependent exocytosis / G protein-coupled adenosine receptor signaling pathway / negative regulation of adenylate cyclase activity / positive regulation of urine volume / ganglioside catabolic process / positive regulation of neural precursor cell proliferation / negative regulation of synaptic transmission ...bitter taste receptor activity / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / detection of chemical stimulus involved in sensory perception of bitter taste / negative regulation of calcium ion-dependent exocytosis / G protein-coupled adenosine receptor signaling pathway / negative regulation of adenylate cyclase activity / positive regulation of urine volume / ganglioside catabolic process / positive regulation of neural precursor cell proliferation / negative regulation of synaptic transmission / Class C/3 (Metabotropic glutamate/pheromone receptors) / oligosaccharide catabolic process / gamma-aminobutyric acid signaling pathway / exo-alpha-sialidase / neuronal dense core vesicle / exo-alpha-sialidase activity / negative regulation of apoptotic signaling pathway / regulation of calcium ion transport / Adenylate cyclase inhibitory pathway / positive regulation of vascular associated smooth muscle cell proliferation / response to nutrient / hippocampal mossy fiber to CA3 synapse / positive regulation of superoxide anion generation / Regulation of insulin secretion / trans-Golgi network / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G protein-coupled receptor activity / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / 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 / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / cell body / GTPase binding / Ca2+ pathway / retina development in camera-type eye / midbody / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / fibroblast proliferation / 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 / positive regulation of ERK1 and ERK2 cascade / ciliary basal body / positive regulation of cell migration / G protein-coupled receptor signaling pathway / external side of plasma membrane / lysosomal membrane / cell division / GTPase activity / intracellular membrane-bounded organelle / positive regulation of cell population proliferation / synapse / centrosome / dendrite / protein-containing complex binding / GTP binding / endoplasmic reticulum / signal transduction / extracellular exosome
Similarity search - Function
: / Taste receptor type 2 / Taste receptor protein (TAS2R) / Glycoside hydrolase, family 33, N-terminal / Trans-sialidase, domain 3 / Sialidase, N-terminal domain / BNR repeat-like domain / Laminin G domain / Laminin G domain / Sialidase family ...: / Taste receptor type 2 / Taste receptor protein (TAS2R) / Glycoside hydrolase, family 33, N-terminal / Trans-sialidase, domain 3 / Sialidase, N-terminal domain / BNR repeat-like domain / Laminin G domain / Laminin G domain / Sialidase family / Sialidase / YSIRK type signal peptide / YSIRK Gram-positive signal peptide / Gram-positive cocci surface proteins LPxTG motif profile. / Sialidase superfamily / LPXTG cell wall anchor domain / 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 / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / Concanavalin A-like lectin/glucanase domain superfamily / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / 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
exo-alpha-sialidase / Guanine nucleotide-binding protein G(i) subunit alpha-2 / 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 / Taste receptor type 2 member 16
Similarity search - Component
Biological speciesHomo sapiens (human) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.77 Å
AuthorsWang X / Zhou C / Wu LJ / Hua T / Liu ZJ
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: To Be Published
Title: Cryo-EM structure of GPCR16-Gi2 complex
Authors: Wang X / Zhou C / Wu LJ / Hua T / Liu ZJ
History
DepositionOct 22, 2024-
Header (metadata) releaseApr 2, 2025-
Map releaseApr 2, 2025-
UpdateApr 2, 2025-
Current statusApr 2, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_62129.png

Downloads & links

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Map

FileDownload / File: emd_62129.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.04 Å/pix.
x 256 pix.
= 266.24 Å		1.04 Å/pix.
x 256 pix.
= 266.24 Å		1.04 Å/pix.
x 256 pix.
= 266.24 Å

Surface

Projections

Slices (1/3)

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Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.04 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.04
Minimum - Maximum-0.0017871031 - 1.8961409
Average (Standard dev.)0.00088677526 (±0.021241838)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 266.24 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_62129_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_62129_half_map_2.map
Projections & Slices
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Histogram

Histogram (log scale)

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Sample components

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Entire : tas2r16 with gi2

EntireName: tas2r16 with gi2
Components
  • Complex: tas2r16 with gi2
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-2
    • 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: exo-alpha-sialidase,Taste receptor type 2 member 16,LgBiT
  • Ligand: 2-(hydroxymethyl)phenyl beta-D-glucopyranoside

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Supramolecule #1: tas2r16 with gi2

SupramoleculeName: tas2r16 with gi2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Guanine nucleotide-binding protein G(i) subunit alpha-2

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-2
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.560895 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGCTVSAEDK AAAERSKMID KNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEDG YSEEECRQYR AVVYSNTIQS IMAIVKAMG NLQIDFADPS RADDARQLFA LSCTAEEQGV LPDDLSGVIR RLWADHGVQA CFGRSREYQL NDSAAYYLND L ERIAQSDY ...String:
MGCTVSAEDK AAAERSKMID KNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEDG YSEEECRQYR AVVYSNTIQS IMAIVKAMG NLQIDFADPS RADDARQLFA LSCTAEEQGV LPDDLSGVIR RLWADHGVQA CFGRSREYQL NDSAAYYLND L ERIAQSDY IPTQQDVLRT RVKTTGIVET HFTFKDLHFK MFDVGAQRSE RKKWIHCFEG VTAIIFCVAL SAYDLVLAED EE MNRMHES MKLFDSICNN KWFTDTSIIL FLNKKDLFEE KITHSPLTIC FPEYTGANKY DEAASYIQSK FEDLNKRKDT KEI YTHFTC STDTKNVQFV FDAVTDVIIK NNLKDCGLF

UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-2

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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: 39.728426 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String:
MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPNG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWNGSSGGG GSGGGGSSGV SGWRLFKKIS

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: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.66682 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 KAAAENLYFQ SHHHHHHHH

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Macromolecule #5: exo-alpha-sialidase,Taste receptor type 2 member 16,LgBiT

MacromoleculeName: exo-alpha-sialidase,Taste receptor type 2 member 16,LgBiT
type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO / EC number: exo-alpha-sialidase
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 113.855758 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD DDDAHHHHHH HHHHENLYFQ SAHHHHHHSS GLEVLFQGPP EGAALTEKTD IFESGRNGNP NKDGIKSYR IPALLKTDKG TLIAGADERR LHSSDWGDIG MVIRRSEDNG KTWGDRVTIT NLRDNPKASD PSIGSPVNID M VLVQDPET ...String:
MKTIIALSYI FCLVFADYKD DDDAHHHHHH HHHHENLYFQ SAHHHHHHSS GLEVLFQGPP EGAALTEKTD IFESGRNGNP NKDGIKSYR IPALLKTDKG TLIAGADERR LHSSDWGDIG MVIRRSEDNG KTWGDRVTIT NLRDNPKASD PSIGSPVNID M VLVQDPET KRIFSIYDMF PEGKGIFGMS SQKEEAYKKI DGKTYQILYR EGEKGAYTIR ENGTVYTPDG KATDYRVVVD PV KPAYSDK GDLYKGDQLL GNIYFTTNKT SPFRIAKDSY LWMSYSDDDG KTWSAPQDIT PMVKADWMKF LGVGPGTGIV LRN GPHKGR ILIPVYTTNN VSHLDGSQSS RVIYSDDHGK TWHAGEAVND NRQVDGQKIH SSTMNNRRAQ NTESTVVQLN NGDV KLFMR GLTGDLQVAT SKDGGVTWEK DIKRYPQVKD VYVQMSAIHT MHEGKEYIIL SNAGGPKREN GMVHLARVEE NGELT WLKH NPIQKGEFAY NSLQELGNGE YGILYEHTEK GQNAYTLSFR KFNWEFLSKN GSGSGIPIQL TVFFMIIYVL ESLTII VQS SLIVAVLGRE WLQVRRLMPV DMILISLGIS RFCLQWASML NNFCSYFNLN YVLCNLTITW EFFNILTFWL NSLLTVF YC IKVSSFTHHI FLWLRWRILR LFPWILLGCL MITCVTIIPS AIGNYIQIQL LTMEHLPRNS TVTDKLENFH QYQFQAHT V ALVIPFILFL ASTIFLMASL TKQIQHHSTG HCNPSMKARF TALRSLAVLF IVFTSYFLTI LITIIGTLFD KRCWLWVWE AFVYAFILMH STSLMLSSPT LKRILKGKCG SGSGGSGSGG SGSGGSGSGS SGGVFTLEDF VGDWEQTAAY NLDQVLEQGG VSSLLQNLA VSVTPIQRIV RSGENALKID IHVIIPYEGL SADQMAQIEE VFKVVYPVDD HHFKVILPYG TLVIDGVTPN M LNYFGRPY EGIAVFDGKK ITVTGTLWNG NKIIDERLIT PDGSMLFRVT INS

UniProtKB: exo-alpha-sialidase, Taste receptor type 2 member 16

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Macromolecule #6: 2-(hydroxymethyl)phenyl beta-D-glucopyranoside

MacromoleculeName: 2-(hydroxymethyl)phenyl beta-D-glucopyranoside / type: ligand / ID: 6 / Number of copies: 1 / Formula: SA0
Molecular weightTheoretical: 286.278 Da
Chemical component information

ChemComp-SA0:
2-(hydroxymethyl)phenyl beta-D-glucopyranoside

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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: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TALOS ARCTICA
Image recordingFilm or detector model: GATAN K3 BIOCONTINUUM (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: 2.0 µm / Nominal defocus min: 1.2 µm
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.77 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 1064319
Initial angle assignmentType: COMMON LINE
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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