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- EMDB-24268: Structures of human ghrelin receptor-Gi complexes with ghrelin an... -

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Entry
Database: EMDB / ID: EMD-24268
TitleStructures of human ghrelin receptor-Gi complexes with ghrelin and a synthetic agonist
Map dataCryoEM of GHSR-Gi-MK0677
Sample
  • Complex: Complex of GHSR-Gi-ghrelin
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • 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: Antibody fragment
    • Protein or peptide: Growth hormone secretagogue receptor type 1
  • Ligand: 1-(methanesulfonyl)-1'-(2-methyl-L-alanyl-O-benzyl-D-seryl)-1,2-dihydrospiro[indole-3,4'-piperidine]
  • Ligand: CHOLESTEROL
Function / homology
Function and homology information


growth hormone secretagogue receptor activity / regulation of hindgut contraction / regulation of growth hormone secretion / growth hormone-releasing hormone receptor activity / positive regulation of small intestinal transit / negative regulation of locomotion involved in locomotory behavior / regulation of gastric motility / regulation of transmission of nerve impulse / response to follicle-stimulating hormone / growth hormone secretion ...growth hormone secretagogue receptor activity / regulation of hindgut contraction / regulation of growth hormone secretion / growth hormone-releasing hormone receptor activity / positive regulation of small intestinal transit / negative regulation of locomotion involved in locomotory behavior / regulation of gastric motility / regulation of transmission of nerve impulse / response to follicle-stimulating hormone / growth hormone secretion / ghrelin secretion / positive regulation of eating behavior / negative regulation of norepinephrine secretion / positive regulation of appetite / positive regulation of small intestine smooth muscle contraction / negative regulation of macrophage apoptotic process / adult feeding behavior / negative regulation of appetite / positive regulation of multicellular organism growth / actin polymerization or depolymerization / cellular response to thyroid hormone stimulus / response to growth hormone / positive regulation of insulin-like growth factor receptor signaling pathway / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / negative regulation of interleukin-1 beta production / response to food / positive regulation of vascular endothelial cell proliferation / cellular response to insulin-like growth factor stimulus / regulation of postsynapse organization / response to L-glutamate / regulation of synapse assembly / positive regulation of fatty acid metabolic process / postsynaptic modulation of chemical synaptic transmission / positive regulation of sprouting angiogenesis / response to dexamethasone / peptide hormone binding / negative regulation of interleukin-6 production / negative regulation of tumor necrosis factor production / decidualization / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / negative regulation of insulin secretion / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / hormone-mediated signaling pathway / Peptide ligand-binding receptors / insulin-like growth factor receptor signaling pathway / response to hormone / synaptic membrane / Regulation of insulin secretion / G protein-coupled receptor activity / G protein-coupled receptor binding / Schaffer collateral - CA1 synapse / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-modulating 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 activation / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / response to peptide hormone / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / negative regulation of inflammatory response / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to insulin stimulus / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / GDP binding / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity
Similarity search - Function
Growth hormone secretagogue receptor/motilin receptor / G-protein alpha subunit, group I / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain ...Growth hormone secretagogue receptor/motilin receptor / G-protein alpha subunit, group I / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / 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) / 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(i) subunit alpha-1 / Growth hormone secretagogue receptor type 1
Similarity search - Component
Biological speciesHomo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.7 Å
AuthorsLiu H / Sun D / Sun J / Zhang C
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM128641 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R03TR003306 United States
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)HL143037 United States
CitationJournal: Nat Commun / Year: 2021
Title: Structural basis of human ghrelin receptor signaling by ghrelin and the synthetic agonist ibutamoren.
Authors: Heng Liu / Dapeng Sun / Alexander Myasnikov / Marjorie Damian / Jean-Louis Baneres / Ji Sun / Cheng Zhang /
Abstract: The hunger hormone ghrelin activates the ghrelin receptor GHSR to stimulate food intake and growth hormone secretion and regulate reward signaling. Acylation of ghrelin at Ser3 is required for its ...The hunger hormone ghrelin activates the ghrelin receptor GHSR to stimulate food intake and growth hormone secretion and regulate reward signaling. Acylation of ghrelin at Ser3 is required for its agonistic action on GHSR. Synthetic agonists of GHSR are under clinical evaluation for disorders related to appetite and growth hormone dysregulation. Here, we report high-resolution cryo-EM structures of the GHSR-G signaling complex with ghrelin and the non-peptide agonist ibutamoren as an investigational new drug. Our structures together with mutagenesis data reveal the molecular basis for the binding of ghrelin and ibutamoren. Structural comparison suggests a salt bridge and an aromatic cluster near the agonist-binding pocket as important structural motifs in receptor activation. Notable structural variations of the G and GHSR coupling are observed in our cryo-EM analysis. Our results provide a framework for understanding GHSR signaling and developing new GHSR agonist drugs.
History
DepositionJun 20, 2021-
Header (metadata) releaseDec 15, 2021-
Map releaseDec 15, 2021-
UpdateDec 15, 2021-
Current statusDec 15, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.6
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.6
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7na8
  • Surface level: 0.6
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_24268.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryoEM of GHSR-Gi-MK0677
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 320 pix.
= 264.32 Å
0.83 Å/pix.
x 320 pix.
= 264.32 Å
0.83 Å/pix.
x 320 pix.
= 264.32 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.826 Å
Density
Contour LevelBy AUTHOR: 0.6 / Movie #1: 0.6
Minimum - Maximum-1.6012132 - 3.0930145
Average (Standard dev.)0.0036893033 (±0.07355082)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 264.32 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.8260.8260.826
M x/y/z320320320
origin x/y/z0.0000.0000.000
length x/y/z264.320264.320264.320
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS320320320
D min/max/mean-1.6013.0930.004

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Supplemental data

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Sample components

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Entire : Complex of GHSR-Gi-ghrelin

EntireName: Complex of GHSR-Gi-ghrelin
Components
  • Complex: Complex of GHSR-Gi-ghrelin
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • 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: Antibody fragment
    • Protein or peptide: Growth hormone secretagogue receptor type 1
  • Ligand: 1-(methanesulfonyl)-1'-(2-methyl-L-alanyl-O-benzyl-D-seryl)-1,2-dihydrospiro[indole-3,4'-piperidine]
  • Ligand: CHOLESTEROL

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Supramolecule #1: Complex of GHSR-Gi-ghrelin

SupramoleculeName: Complex of GHSR-Gi-ghrelin / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Insect expression vector pBlueBacmsGCA1His (others)

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

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.429059 KDa
Recombinant expressionOrganism: Insect expression vector pBlueBacmsGCA1His (others)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGGQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHESM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCA TETKNVQFVF DAVTDVIIKN NLKDCGLF

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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: 37.417918 KDa
Recombinant expressionOrganism: Insect expression vector pBlueBacmsGCA1His (others)
SequenceString: MSELDELRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR QGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String:
MSELDELRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR QGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPDG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWN

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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: 7.859173 KDa
Recombinant expressionOrganism: Insect expression vector pBlueBacmsGCA1His (others)
SequenceString:
MASNNTASIA QARKLVQQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASQNP FREKKFFCAI L

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Macromolecule #4: Antibody fragment

MacromoleculeName: Antibody fragment / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 26.236244 KDa
Recombinant expressionOrganism: Insect expression vector pBlueBacmsGCA1His (others)
SequenceString: VQLVESGGGL VQPGGSRKLS CSASGFAFSS FGMHWVRQAP EKGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSED TAMYYCVRSI YYYGSSPFDF WGQGTTLTVS SGGGGSGGGG SGGGGSDIVM TQATSSVPVT PGESVSISCR S SKSLLHSN ...String:
VQLVESGGGL VQPGGSRKLS CSASGFAFSS FGMHWVRQAP EKGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSED TAMYYCVRSI YYYGSSPFDF WGQGTTLTVS SGGGGSGGGG SGGGGSDIVM TQATSSVPVT PGESVSISCR S SKSLLHSN GNTYLYWFLQ RPGQSPQLLI YRMSNLASGV PERFSGSGSG TAFTLTISRL EAEDVGVYYC MQHLEYPLTF GA GTKLEL

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Macromolecule #5: Growth hormone secretagogue receptor type 1

MacromoleculeName: Growth hormone secretagogue receptor type 1 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.392383 KDa
Recombinant expressionOrganism: Insect expression vector pBlueBacmsGCA1His (others)
SequenceString: MWNATPSEEP GFNLTLADLD WDASPGNDSL GDELLQLFPA PLLAGVTATC VALFVVGIAG NLLTMLVVSR FRELRTTTNL YLSSMAFSD LLIFLCMPLD LVRLWQYRPW NFGDLLCKLF QFVSESCTYA KVLTITALSV ERYFAICFPL RAKVVVTKGR V KLVIFVIW ...String:
MWNATPSEEP GFNLTLADLD WDASPGNDSL GDELLQLFPA PLLAGVTATC VALFVVGIAG NLLTMLVVSR FRELRTTTNL YLSSMAFSD LLIFLCMPLD LVRLWQYRPW NFGDLLCKLF QFVSESCTYA KVLTITALSV ERYFAICFPL RAKVVVTKGR V KLVIFVIW AVAFCSAGPI FVLVGVEHEN GTDPWDTNEC RPTEFAVRSG LLTVMVWVSS IFFFLPVFCL TVLYSLIGRK LW RRRRGDA VVGASLRDQN HKQTVKMLAV VVFAFILCWL PFHVGRYLFS KSFEPGSLEI AQISQYCNLV SFVLFYLSAA INP ILYNIM SKKYRVAVFR LLGFEPFSQR KLSTLKDESS RAWTESSINT

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Macromolecule #6: 1-(methanesulfonyl)-1'-(2-methyl-L-alanyl-O-benzyl-D-seryl)-1,2-d...

MacromoleculeName: 1-(methanesulfonyl)-1'-(2-methyl-L-alanyl-O-benzyl-D-seryl)-1,2-dihydrospiro[indole-3,4'-piperidine]
type: ligand / ID: 6 / Number of copies: 1 / Formula: 1KD
Molecular weightTheoretical: 528.664 Da
Chemical component information

ChemComp-1KD:
1-(methanesulfonyl)-1'-(2-methyl-L-alanyl-O-benzyl-D-seryl)-1,2-dihydrospiro[indole-3,4'-piperidine] / agonist, hormone*YM

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Macromolecule #7: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 7 / Number of copies: 1 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL

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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
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 82.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 283300
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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