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- EMDB-64734: Macimorelin bound growth hormone secretagogue receptor in complex... -
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Open data
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Basic information
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Title | Macimorelin bound growth hormone secretagogue receptor in complex with Gq | ||||||||||||
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![]() | Macimorelin / growth hormone secretagogue receptor / GHSR / GPCR / MEMBRANE PROTEIN/IMMUNE SYSTEM / MEMBRANE PROTEIN-IMMUNE SYSTEM complex | ||||||||||||
Function / homology | ![]() 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 / ghrelin secretion / response to follicle-stimulating hormone ...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 / ghrelin secretion / response to follicle-stimulating hormone / positive regulation of appetite / growth hormone secretion / negative regulation of norepinephrine secretion / positive regulation of eating behavior / positive regulation of small intestine smooth muscle contraction / negative regulation of macrophage apoptotic process / adult feeding behavior / negative regulation of appetite / actin polymerization or depolymerization / positive regulation of multicellular organism growth / cellular response to thyroid hormone stimulus / response to growth hormone / positive regulation of insulin-like growth factor receptor signaling pathway / regulation of postsynapse organization / positive regulation of vascular endothelial cell proliferation / response to food / negative regulation of interleukin-1 beta production / positive regulation of fatty acid metabolic process / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / cellular response to insulin-like growth factor stimulus / regulation of synapse assembly / response to L-glutamate / positive regulation of sprouting angiogenesis / response to dexamethasone / negative regulation of interleukin-6 production / peptide hormone binding / decidualization / negative regulation of tumor necrosis factor production / postsynaptic modulation of chemical synaptic transmission / negative regulation of insulin secretion / response to hormone / hormone-mediated signaling pathway / insulin-like growth factor receptor signaling pathway / Peptide ligand-binding receptors / synaptic membrane / electron transport chain / G protein-coupled receptor activity / Schaffer collateral - CA1 synapse / negative regulation of inflammatory response / Olfactory Signaling Pathway / Activation of the phototransduction cascade / cellular response to insulin stimulus / 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 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 / response to estradiol / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / cellular response to lipopolysaccharide / GTPase binding / retina development in camera-type eye / Ca2+ pathway / 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 / spermatogenesis / G alpha (q) signalling events Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.63 Å | ||||||||||||
![]() | Wang R / Sun J / Liu H / Guo S / Zhang Y / Hu W / Wang J / Zhuang Y / Jiang Y / Xie X ...Wang R / Sun J / Liu H / Guo S / Zhang Y / Hu W / Wang J / Zhuang Y / Jiang Y / Xie X / Xu H / Wang Y | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Molecular recognition of two approved drugs Macimorelin and Anamorelin by the growth hormone secretagogue receptor. Authors: Ruo-Lan Wang / Jun Sun / Heng Liu / Shi-Meng Guo / Yu Zhang / Wen Hu / Jiang Wang / Hong Liu / You-Wen Zhuang / Yi Jiang / Xin Xie / H Eric Xu / Yue Wang / ![]() Abstract: The growth hormone secretagogue receptor (GHSR) plays a critical role in regulating growth hormone release and metabolic homeostasis. Understanding the molecular mechanisms of ligand-GHSR recognition ...The growth hormone secretagogue receptor (GHSR) plays a critical role in regulating growth hormone release and metabolic homeostasis. Understanding the molecular mechanisms of ligand-GHSR recognition is essential for developing therapeutic interventions. In this study, we investigated the molecular recognition mechanisms of two clinically approved drugs: Macimorelin (used for diagnosing adult growth hormone deficiency) and Anamorelin (approved in Japan for cancer cachexia). Using high-resolution cryo-electron microscopy, we determined the structures of GHSR bound to Macimorelin and Anamorelin in complex with G proteins at resolutions of 2.63 Å and 2.52 Å, respectively. We revealed that both drugs occupied a bifurcated binding pocket divided by a conserved salt bridge between E124 and R283. Through systematic mutagenesis and functional studies, we identified the key residues underlying the higher binding affinity of Anamorelin compared to Macimorelin. In addition, structural comparison of GHSR in complex with different G protein subtypes elucidated the mechanisms driving G protein selectivity. Our results provide crucial insights into GHSR-drug interactions and offer valuable guidance for designing more selective and potent GHSR agonists. | ||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 59.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 21.8 KB 21.8 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 8.4 KB | Display | ![]() |
Images | ![]() | 48.2 KB | ||
Filedesc metadata | ![]() | 7.1 KB | ||
Others | ![]() ![]() | 59.4 MB 59.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9v2nMC ![]() 9uy3C M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.73 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_64734_half_map_1.map | ||||||||||||
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Density Histograms |
-Half map: #2
File | emd_64734_half_map_2.map | ||||||||||||
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Density Histograms |
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Sample components
-Entire : Macimorelin bound growth hormone secretagogue receptor in complex...
Entire | Name: Macimorelin bound growth hormone secretagogue receptor in complex with Gq |
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Components |
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-Supramolecule #1: Macimorelin bound growth hormone secretagogue receptor in complex...
Supramolecule | Name: Macimorelin bound growth hormone secretagogue receptor in complex with Gq type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Engineered G-alpha-q subunit
Macromolecule | Name: Engineered G-alpha-q subunit / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 41.855578 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MMGCTLSAED KAAVERSKMI EKQLQKDKQV YRRTLRLLLL GADNSGKSTI VKQMRIYHVN GYSEEECKQY KAVVYSNTIQ SIIAIIRAM GRLKIDFGDS ARADDARQLF VLAGAAEEGF MTAELAGVIK RLWKDSGVQA CFNRSREYQL NDSAAYYLND L DRIAQPNY ...String: MMGCTLSAED KAAVERSKMI EKQLQKDKQV YRRTLRLLLL GADNSGKSTI VKQMRIYHVN GYSEEECKQY KAVVYSNTIQ SIIAIIRAM GRLKIDFGDS ARADDARQLF VLAGAAEEGF MTAELAGVIK RLWKDSGVQA CFNRSREYQL NDSAAYYLND L DRIAQPNY IPTQQDVLRT RVKTSGIFET KFQVDKVNFH MFDVGAQRDE RRKWIQCFND VTAIIFVVDS SDYNRLQEAL ND FKSIWNN RWLRTISVIL FLNKQDLLAE KVLAGKSKIE DYFPEFARYT TPEDATPEPG EDPRVTRAKY FIRKEFVDIS TAS GDGRHI CYPHFTCSVD TENARRIFND CKDIILQMNL REYNLV |
-Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Macromolecule | Name: 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 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 40.226992 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD ...String: MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD TTCALWDIET GQQTTTFTGH TGDVMSLSLA PDTRLFVSGA CDASAKLWDV REGMCRQTFT GHESDINAIC FF PNGNAFA TGSDDATCRL FDLRADQELM TYSHDNIICG ITSVSFSKSG RLLLAGYDDF NCNVWDALKA DRAGVLAGHD NRV SCLGVT DDGMAVATGS WDSFLKIWNG SSGGGGSGGG GSSGVSGWRL FKKIS UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Macromolecule | Name: 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 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #4: NB35
Macromolecule | Name: NB35 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 15.343019 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MAQVQLQESG GGLVQPGGSL RLSCAASGFT FSNYKMNWVR QAPGKGLEWV SDISQSGASI SYTGSVKGRF TISRDNAKNT LYLQMNSLK PEDTAVYYCA RCPAPFTRDC FDVTSTTYAY RGQGTQVTVS SHHHHHHEPE A |
-Macromolecule #5: Soluble cytochrome b562,Growth hormone secretagogue receptor type...
Macromolecule | Name: Soluble cytochrome b562,Growth hormone secretagogue receptor type 1,growth hormone secretagogue receptor type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 76.149734 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MKTIIALSYI FCLVFAHHHH HHHHHHPSRL EEELRRRLTE PADLEDNWET LNDNLKVIEK ADNAAQVKDA LTKMRAAALD AQKATPPKL EDKSPDSPEM KDFRHGFDIL VGQIDDALKL ANEGKVKEAQ AAAEQLKTTR NAYIQKYLMW NATPSEEPGF N LTLADLDW ...String: MKTIIALSYI FCLVFAHHHH HHHHHHPSRL EEELRRRLTE PADLEDNWET LNDNLKVIEK ADNAAQVKDA LTKMRAAALD AQKATPPKL EDKSPDSPEM KDFRHGFDIL VGQIDDALKL ANEGKVKEAQ AAAEQLKTTR NAYIQKYLMW NATPSEEPGF N LTLADLDW DASPGNDSLG DELLQLFPAP LLAGVTATCV ALFVVGIAGN LLTMLVVSRF RELRTTTNLY LSSMAFSDLL IF LCMPLDL VRLWQYRPWN FGDLLCKLFQ FVSESCTYAT VLTITALSVE RYFAICFPLR AKVVVTKGRV KLVIFVIWAV AFC SAGPIF VLVGVEHENG TDPWDTNECR PTEFAVRSGL LTVMVWVSSI FFFLPVFCLT VLYSLIGRKL WRRRRGDAVV GASL RDQNH KQTVKMLAVV VFAFILCWLP FHVGRYLFSK SFEPGSLEIA QISQYCNLVS FVLFYLSAAI NPILYNIMSK KYRVA VFRL LGFEPFSQRK LSTLKDESSR AWTESSINTG SAGSVFTLED FVGDWEQTAA YNLDQVLEQG GVSSLLQNLA VSVTPI QRI VRSGENALKI DIHVIIPYEG LSADQMAQIE EVFKVVYPVD DHHFKVILPY GTLVIDGVTP NMLNYFGRPY EGIAVFD GK KITVTGTLWN GNKIIDERLI TPDGSMLFRV TINS UniProtKB: Soluble cytochrome b562, Growth hormone secretagogue receptor type 1 |
-Macromolecule #6: scFv16
Macromolecule | Name: scFv16 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 32.561281 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: LLVNQSHQGF NKEHTSKMVS AIVLYVLLAA AAHSAFAVQL VESGGGLVQP GGSRKLSCSA SGFAFSSFGM HWVRQAPEKG LEWVAYISS GSGTIYYADT VKGRFTISRD DPKNTLFLQM TSLRSEDTAM YYCVRSIYYY GSSPFDFWGQ GTTLTVSAGG G GSGGGGSG ...String: LLVNQSHQGF NKEHTSKMVS AIVLYVLLAA AAHSAFAVQL VESGGGLVQP GGSRKLSCSA SGFAFSSFGM HWVRQAPEKG LEWVAYISS GSGTIYYADT VKGRFTISRD DPKNTLFLQM TSLRSEDTAM YYCVRSIYYY GSSPFDFWGQ GTTLTVSAGG G GSGGGGSG GGGSADIVMT QATSSVPVTP GESVSISCRS SKSLLHSNGN TYLYWFLQRP GQSPQLLIYR MSNLASGVPD RF SGSGSGT AFTLTISRLE AEDVGVYYCM QHLEYPLTFG AGTKLELVDE NLYFQGASHH HHHHHH |
-Macromolecule #7: Macimorelin
Macromolecule | Name: Macimorelin / type: ligand / ID: 7 / Number of copies: 1 / Formula: A1EQV |
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Molecular weight | Theoretical: 474.555 Da |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.3 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TALOS ARCTICA |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: OTHER |
Electron optics | Illumination mode: OTHER / Imaging mode: OTHER / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |