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Title | Cryo-EM structure of the g1:Ox-bound human GLP-1R-Gs complex | ||||||||||||||||||||||||||||||||||||
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![]() | g1:Ox / MEMBRANE PROTEIN | ||||||||||||||||||||||||||||||||||||
Function / homology | ![]() adenylate cyclase-activating serotonin receptor signaling pathway / glucagon-like peptide 1 receptor activity / glucagon receptor activity / sensory perception of chemical stimulus / hormone secretion / mu-type opioid receptor binding / positive regulation of blood pressure / corticotropin-releasing hormone receptor 1 binding / G-protein activation / Activation of the phototransduction cascade ...adenylate cyclase-activating serotonin receptor signaling pathway / glucagon-like peptide 1 receptor activity / glucagon receptor activity / sensory perception of chemical stimulus / hormone secretion / mu-type opioid receptor binding / positive regulation of blood pressure / corticotropin-releasing hormone receptor 1 binding / G-protein activation / Activation of the phototransduction cascade / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / post-translational protein targeting to membrane, translocation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / G alpha (z) signalling events / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / beta-2 adrenergic receptor binding / G alpha (i) signalling events / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (12/13) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Adrenaline,noradrenaline inhibits insulin secretion / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Ca2+ pathway / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (z) signalling events / Extra-nuclear estrogen signaling / G alpha (s) signalling events / photoreceptor outer segment membrane / G alpha (q) signalling events / G alpha (i) signalling events / spectrin binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / response to psychosocial stress / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / regulation of heart contraction / alkylglycerophosphoethanolamine phosphodiesterase activity / peptide hormone binding / PKA activation in glucagon signalling / hair follicle placode formation / photoreceptor outer segment / developmental growth / D1 dopamine receptor binding / intracellular transport / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / Hedgehog 'off' state / positive regulation of protein localization to cell cortex / Adenylate cyclase inhibitory pathway / T cell migration / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / D2 dopamine receptor binding / ionotropic glutamate receptor binding / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / negative regulation of blood pressure / insulin-like growth factor receptor binding / photoreceptor inner segment / cardiac muscle cell apoptotic process / cellular response to forskolin / regulation of insulin secretion / cellular response to glucagon stimulus / regulation of mitotic spindle organization / adenylate cyclase activator activity / trans-Golgi network membrane / Regulation of insulin secretion / negative regulation of inflammatory response to antigenic stimulus / positive regulation of cholesterol biosynthetic process / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / bone development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / response to peptide hormone Similarity search - Function | ||||||||||||||||||||||||||||||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() ![]() ![]() | ||||||||||||||||||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.99 Å | ||||||||||||||||||||||||||||||||||||
![]() | Fan S / Li J / Zhuang J / Zhou Q / Mai Y / Lin B / Wang M-W / Wu C | ||||||||||||||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Disulfide-Directed Multicyclic Peptides with N-Terminally Extendable α-Helices for Recognition and Activation of G Protein-Coupled Receptors. Authors: Shihui Fan / Jie Li / Jie Zhuang / Qingtong Zhou / Yiting Mai / Bingni Lin / Ming-Wei Wang / Chuanliu Wu / ![]() Abstract: Many peptide hormones adopt long α-helical structures upon interacting with their cognate receptors but often exhibit flexible conformations when unbound. Strategies that can stabilize long α- ...Many peptide hormones adopt long α-helical structures upon interacting with their cognate receptors but often exhibit flexible conformations when unbound. Strategies that can stabilize long α-helices without disrupting their binding to receptors are still lacking, which hinders progress in their biological applications and drug development. Here, we present an approach that combines rational design with library screening to create and identify a unique disulfide-directed multicyclic peptide (DDMP) scaffold, which could effectively stabilize N-terminally extendable α-helices while displaying exceptional efficiency in disulfide pairing and oxidative folding. This DDMP scaffold was then utilized for stabilizing the α-helical structure of glucagon-like peptide-1 (GLP-1), resulting in a potent GLP-1 receptor (GLP-1R) agonist with a significantly improved α-helicity and proteolytic stability. By incorporating external α-helices into the DDMP scaffold, we can effectively preserve the native N-terminal α-helical structures while allowing for extensive evolution of the C-terminal disulfide-rich domain for enhancing target binding, as demonstrated by the generation of the DDMP-stabilized GLP-1 (g1:Ox). The cryo-electron microscopy structure of the g1:Ox-GLP-1R in complex with heterotrimeric G reveals the molecular basis for the potent binding between g1:Ox and GLP-1R. Specifically, the DDMP moiety establishes additional interactions with the extracellular domain of GLP-1R, which are absent in the case of GLP-1. Thus, this work offers a novel and effective approach for engineering therapeutic peptides and other peptide α-helices, ensuring that both the N- and C-terminal regions remain essential for target recognition and activation. | ||||||||||||||||||||||||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 118 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 23.4 KB 23.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 10.5 KB | Display | ![]() |
Images | ![]() | 68.2 KB | ||
Filedesc metadata | ![]() | 7 KB | ||
Others | ![]() ![]() | 115.9 MB 115.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9j1pMC ![]() 9j5fC ![]() 9j5hC 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: 1.071 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_61077_half_map_1.map | ||||||||||||
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Density Histograms |
-Half map: #1
File | emd_61077_half_map_2.map | ||||||||||||
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Density Histograms |
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Sample components
-Entire : Cryo-EM structure of the g1 Ox-bound human GLP-1R-Gs complex
Entire | Name: Cryo-EM structure of the g1 Ox-bound human GLP-1R-Gs complex |
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Components |
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-Supramolecule #1: Cryo-EM structure of the g1 Ox-bound human GLP-1R-Gs complex
Supramolecule | Name: Cryo-EM structure of the g1 Ox-bound human GLP-1R-Gs complex type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine n...
Macromolecule | Name: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short,Guanine nucleotide-binding protein G(s) subunit alpha isoforms XLas type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 41.879465 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGCTLSAEDK AAVERSKMIE KQLQKDKQVY RATHRLLLLG ADNSGKSTIV KQMRIYHVNG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String: MGCTLSAEDK AAVERSKMIE KQLQKDKQVY RATHRLLLLG ADNSGKSTIV KQMRIYHVNG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTSGIFETK FQVDKVNFHM FDVGAQRDER RKWIQCFNDV TAIIFVVDSS DYNRLQEALN DF KSIWNNR WLRTISVILF LNKQDLLAEK VLAGKSKIED YFPEFARYTT PEDATPEPGE DPRVTRAKYF IRDEFLRIST ASG DGRHYC YPHFTCSVDT ENARRIFNDC RDIIQRMHLR QYELL UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(i) subunit alpha-1, ...UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(s) subunit alpha isoforms XLas |
-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: 37.915496 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 WDSFLKIWN 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: 7.729947 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: ASNNTASIAQ ARKLVEQLKM EANIDRIKVS KAAADLMAYC EAHAKEDPLL TPVPASENPF REKKFFCAIL UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #4: Nanobody-35
Macromolecule | Name: Nanobody-35 / 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: g1:Ox
Macromolecule | Name: g1:Ox / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 5.109745 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: HAEGTFTSDV SSYLEGQAAK CFIAWLINCP GECVPGSACP DVCTNTCPL |
-Macromolecule #6: Glucagon-like peptide 1 receptor
Macromolecule | Name: Glucagon-like peptide 1 receptor / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 50.860801 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: RPQGATVSLW ETVQKWREYR RQCQRSLTED PPPATDLFCN RTFDEYACWP DGEPGSFVNV SCPWYLPWAS SVPQGHVYRF CTAEGLWLQ KDNSSLPWRD LSECEESKRG ERSSPEEQLL FLYIIYTVGY ALSFSALVIA SAILLGFRHL HCTRNYIHLN L FASFILRA ...String: RPQGATVSLW ETVQKWREYR RQCQRSLTED PPPATDLFCN RTFDEYACWP DGEPGSFVNV SCPWYLPWAS SVPQGHVYRF CTAEGLWLQ KDNSSLPWRD LSECEESKRG ERSSPEEQLL FLYIIYTVGY ALSFSALVIA SAILLGFRHL HCTRNYIHLN L FASFILRA LSVFIKDAAL KWMYSTAAQQ HQWDGLLSYQ DSLSCRLVFL LMQYCVAANY YWLLVEGVYL YTLLAFSVLS EQ WIFRLYV SIGWGVPLLF VVPWGIVKYL YEDEGCWTRN SNMNYWLIIR LPILFAIGVN FLIFVRVICI VVSKLKANLM CKT DIKCRL AKSTLTLIPL LGTHEVIFAF VMDEHARGTL RFIKLFTELS FTSFQGLMVA ILYCFVNNEV QLEFRKSWER WRLE HLHIQ RDSSMKPLKC PTSSLSSGAT AGSSMYTATC QASCS UniProtKB: Glucagon-like peptide 1 receptor |
-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: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 80.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: OTHER |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |