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- EMDB-24401: cryo-EM structure of human Gastric inhibitory polypeptide recepto... -

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Basic information

Entry
Database: EMDB / ID: EMD-24401
Titlecryo-EM structure of human Gastric inhibitory polypeptide receptor GIPR bound to tirzepatide
Map data
Sample
  • Complex: cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bound to Tirzepatide, trimeric G protein complex and stabilizing antibodies
    • Complex: Tirzepatide bound to GIP receptor GIPR
      • Protein or peptide: Tirzepatide
      • Protein or peptide: Gastric inhibitory polypeptide receptor
    • Complex: Trimeric stimulatory G protein
      • Protein or peptide: Isoform Gnas-2 of 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: Single-chain variable fragment 16
    • Protein or peptide: nanobody 35
  • Ligand: 2-fluoro-4-[(1R)-6-methoxy-1-methyl-2-{(1S)-1-[4-(propan-2-yl)phenyl]ethyl}-1,2,3,4-tetrahydroisoquinolin-5-yl]-6-[(2-methylpropyl)amino]phenol
Function / homology
Function and homology information


gastric inhibitory peptide receptor activity / glucagon family peptide binding / gastric inhibitory peptide signaling pathway / desensitization of G protein-coupled receptor signaling pathway / positive regulation of cAMP-mediated signaling / endocrine pancreas development / response to fatty acid / G protein-coupled peptide receptor activity / peptide hormone binding / regulation of insulin secretion ...gastric inhibitory peptide receptor activity / glucagon family peptide binding / gastric inhibitory peptide signaling pathway / desensitization of G protein-coupled receptor signaling pathway / positive regulation of cAMP-mediated signaling / endocrine pancreas development / response to fatty acid / G protein-coupled peptide receptor activity / peptide hormone binding / regulation of insulin secretion / response to axon injury / response to glucose / activation of adenylate cyclase activity / response to nutrient / generation of precursor metabolites and energy / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / positive regulation of insulin secretion / 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 / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / response to calcium ion / 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 prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / transmembrane signaling receptor activity / 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 / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / G alpha (i) signalling events / positive regulation of cytosolic calcium ion concentration / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell surface receptor signaling pathway / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol
Similarity search - Function
GPCR, family 2, gastric inhibitory polypeptide receptor / G-protein coupled receptors family 2 signature 1. / Hormone receptor domain / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / GPCR family 2, extracellular hormone receptor domain superfamily / G-protein coupled receptors family 2 signature 2. / GPCR, family 2, secretin-like, conserved site / GPCR, family 2, secretin-like ...GPCR, family 2, gastric inhibitory polypeptide receptor / G-protein coupled receptors family 2 signature 1. / Hormone receptor domain / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / GPCR family 2, extracellular hormone receptor domain superfamily / G-protein coupled receptors family 2 signature 2. / GPCR, family 2, secretin-like, conserved site / GPCR, family 2, secretin-like / 7 transmembrane receptor (Secretin family) / GPCR, family 2-like / G-protein coupled receptors family 2 profile 2. / 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 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
Similarity search - Domain/homology
Gastric inhibitory polypeptide receptor / 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 / Isoform Gnas-2 of Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Similarity search - Component
Biological speciesHomo sapiens (human) / Mus musculus (house mouse) / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.08 Å
AuthorsSun B / Kobilka BK / Sloop KW / Feng D / Kobilka TS
CitationJournal: Proc Natl Acad Sci U S A / Year: 2022
Title: Structural determinants of dual incretin receptor agonism by tirzepatide.
Authors: Bingfa Sun / Francis S Willard / Dan Feng / Jorge Alsina-Fernandez / Qi Chen / Michal Vieth / Joseph D Ho / Aaron D Showalter / Cynthia Stutsman / Liyun Ding / Todd M Suter / James D Dunbar ...Authors: Bingfa Sun / Francis S Willard / Dan Feng / Jorge Alsina-Fernandez / Qi Chen / Michal Vieth / Joseph D Ho / Aaron D Showalter / Cynthia Stutsman / Liyun Ding / Todd M Suter / James D Dunbar / John W Carpenter / Faiz Ahmad Mohammed / Eitaro Aihara / Robert A Brown / Ana B Bueno / Paul J Emmerson / Julie S Moyers / Tong Sun Kobilka / Matthew P Coghlan / Brian K Kobilka / Kyle W Sloop /
Abstract: SignificanceTirzepatide is a dual agonist of the glucose-dependent insulinotropic polypeptide receptor (GIPR) and the glucagon-like peptide-1 receptor (GLP-1R), which are incretin receptors that ...SignificanceTirzepatide is a dual agonist of the glucose-dependent insulinotropic polypeptide receptor (GIPR) and the glucagon-like peptide-1 receptor (GLP-1R), which are incretin receptors that regulate carbohydrate metabolism. This investigational agent has proven superior to selective GLP-1R agonists in clinical trials in subjects with type 2 diabetes mellitus. Intriguingly, although tirzepatide closely resembles native GIP in how it activates the GIPR, it differs markedly from GLP-1 in its activation of the GLP-1R, resulting in less agonist-induced receptor desensitization. We report how cryogenic electron microscopy and molecular dynamics simulations inform the structural basis for the unique pharmacology of tirzepatide. These studies reveal the extent to which fatty acid modification, combined with amino acid sequence, determines the mode of action of a multireceptor agonist.
History
DepositionJul 6, 2021-
Header (metadata) releaseApr 13, 2022-
Map releaseApr 13, 2022-
UpdateApr 13, 2022-
Current statusApr 13, 2022Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_24401.png

Downloads & links

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Map

FileDownload / File: emd_24401.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 0.832 Å
Density
Contour LevelBy AUTHOR: 0.014
Minimum - Maximum-0.058125492 - 0.091047
Average (Standard dev.)6.043662e-05 (±0.0027322932)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 249.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bou...

EntireName: cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bound to Tirzepatide, trimeric G protein complex and stabilizing antibodies
Components
  • Complex: cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bound to Tirzepatide, trimeric G protein complex and stabilizing antibodies
    • Complex: Tirzepatide bound to GIP receptor GIPR
      • Protein or peptide: Tirzepatide
      • Protein or peptide: Gastric inhibitory polypeptide receptor
    • Complex: Trimeric stimulatory G protein
      • Protein or peptide: Isoform Gnas-2 of 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: Single-chain variable fragment 16
    • Protein or peptide: nanobody 35
  • Ligand: 2-fluoro-4-[(1R)-6-methoxy-1-methyl-2-{(1S)-1-[4-(propan-2-yl)phenyl]ethyl}-1,2,3,4-tetrahydroisoquinolin-5-yl]-6-[(2-methylpropyl)amino]phenol

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Supramolecule #1: cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bou...

SupramoleculeName: cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bound to Tirzepatide, trimeric G protein complex and stabilizing antibodies
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Molecular weightTheoretical: 150 KDa

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Supramolecule #2: Tirzepatide bound to GIP receptor GIPR

SupramoleculeName: Tirzepatide bound to GIP receptor GIPR / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #6-#7
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #3: Trimeric stimulatory G protein

SupramoleculeName: Trimeric stimulatory G protein / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #1-#2, #4
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)

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Macromolecule #1: Isoform Gnas-2 of Guanine nucleotide-binding protein G(s) subunit...

MacromoleculeName: Isoform Gnas-2 of 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: 43.385246 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGCTLSAEDK AAVERSKMIE KQLQKDKQVY RATHRLLLLG AGESGKSTIV KQMRILHVNG FNGDSEKATK VQDIKNNLKE AIETIVAAM SNLVPPVELA NPENQFRVDY ILSVMNVPDF DFPPEFYEHA KALWEDEGVR ACYERSNEYQ LIDCAQYFLD K IDVIKQAD ...String:
MGCTLSAEDK AAVERSKMIE KQLQKDKQVY RATHRLLLLG AGESGKSTIV KQMRILHVNG FNGDSEKATK VQDIKNNLKE AIETIVAAM SNLVPPVELA NPENQFRVDY ILSVMNVPDF DFPPEFYEHA KALWEDEGVR ACYERSNEYQ LIDCAQYFLD K IDVIKQAD YVPSDQDLLR CRVLTSGIFE TKFQVDKVNF HMFDVGGQRD ERRKWIQCFN DVTAIIFVVA SSSYNMVIRE DN QTNRLQE ALNLFKSIWN NRWLRTISVI LFLNKQDLLA EKVLAGKSKI EDYFPEFARY TTPEDATPEP GEDPRVTRAK YFI RDEFLR ISTASGDGRH YCYPHFTCAV DTENIRRVFN DCRDIIQRMH LRQYELL

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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: 38.534062 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MHHHHHHGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC R FLDDNQIV ...String:
MHHHHHHGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC R FLDDNQIV TSSGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD IN AICFFPN GNAFATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAG HDNRVS CLGVTDDGMA VATGSWDSFL KIWN

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Macromolecule #3: Single-chain variable fragment 16

MacromoleculeName: Single-chain variable fragment 16 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 31.870629 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFADV QLVESGGGLV QPGGSRKLSC SASGFAFSSF GMHWVRQAPE KGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSEDT AMYYCVRSIY YYGSSPFDFW GQGTTLTVSS G GGGSGGGG ...String:
MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFADV QLVESGGGLV QPGGSRKLSC SASGFAFSSF GMHWVRQAPE KGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSEDT AMYYCVRSIY YYGSSPFDFW GQGTTLTVSS G GGGSGGGG SGGGGSDIVM TQATSSVPVT PGESVSISCR SSKSLLHSNG NTYLYWFLQR PGQSPQLLIY RMSNLASGVP DR FSGSGSG TAFTLTISRL EAEDVGVYYC MQHLEYPLTF GAGTKLELKA AAHHHHHHHH

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Macromolecule #4: 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: 4 / 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

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Macromolecule #5: nanobody 35

MacromoleculeName: nanobody 35 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 17.352498 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MKYLLPTAAA GLLLLAAQPA MAQVQLQESG GGLVQPGGSL RLSCAASGFT FSNYKMNWVR QAPGKGLEWV SDISQSGASI SYTGSVKGR FTISRDNAKN TLYLQMNSLK PEDTAVYYCA RCPAPFTRDC FDVTSTTYAY RGQGTQVTVS SHHHHHHEPE A

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Macromolecule #6: Tirzepatide

MacromoleculeName: Tirzepatide / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 4.07253 KDa
SequenceString:
Y(AIB)EGTFTSDY SI(AIB)LDKIAQK AFVQWLIAGG PSSGAPPPS

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Macromolecule #7: Gastric inhibitory polypeptide receptor

MacromoleculeName: Gastric inhibitory polypeptide receptor / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 52.871801 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DYKDDDDAAA LEVLFQGPRA ETGSKGQTAG ELYQRWERYR RECQETLAAA EPPSGLACNG SFDMYVCWDY AAPNATARAS CPWYLPWHH HVAAGFVLRQ CGSDGQWGLW RDHTQCENPE KNEAFLDQRL ILERLQVMYT VGYSLSLATL LLALLILSLF R RLHCTRNY ...String:
DYKDDDDAAA LEVLFQGPRA ETGSKGQTAG ELYQRWERYR RECQETLAAA EPPSGLACNG SFDMYVCWDY AAPNATARAS CPWYLPWHH HVAAGFVLRQ CGSDGQWGLW RDHTQCENPE KNEAFLDQRL ILERLQVMYT VGYSLSLATL LLALLILSLF R RLHCTRNY IHINLFTSFM LRAAAILSRD RLLPRPGPYL GDQALALWNQ ALAACRTAQI VTQYCVGANY TWLLVEGVYL HS LLVLVGG SEEGHFRYYL LLGWGAPALF VIPWVIVRYL YENTQCWERN EVKAIWWIIR TPILMTILIN FLIFIRILGI LLS KLRTRQ MRCRDYRLRL ARSTLTLVPL LGVHEVVFAP VTEEQARGAL RFAKLGFEIF LSSFQGFLVS VLYCFINKEV QSEI RRGWH HCRLRRSLGE EQRQLPERAF RALPSGSGPG EVPTSRGLSS GTLPGPGNEA SRELESYC

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Macromolecule #8: 2-fluoro-4-[(1R)-6-methoxy-1-methyl-2-{(1S)-1-[4-(propan-2-yl)phe...

MacromoleculeName: 2-fluoro-4-[(1R)-6-methoxy-1-methyl-2-{(1S)-1-[4-(propan-2-yl)phenyl]ethyl}-1,2,3,4-tetrahydroisoquinolin-5-yl]-6-[(2-methylpropyl)amino]phenol
type: ligand / ID: 8 / Number of copies: 1 / Formula: 41Y
Molecular weightTheoretical: 504.679 Da
Chemical component information

ChemComp-41Y:
2-fluoro-4-[(1R)-6-methoxy-1-methyl-2-{(1S)-1-[4-(propan-2-yl)phenyl]ethyl}-1,2,3,4-tetrahydroisoquinolin-5-yl]-6-[(2-methylpropyl)amino]phenol

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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

Concentration10 mg/mL
BufferpH: 7.5
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 293 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Average exposure time: 1.5 sec. / Average electron dose: 53.6 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: RELION (ver. 3.1)
Startup modelType of model: EMDB MAP
EMDB ID:

8653

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.08 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.1) / Number images used: 259349
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE

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Atomic model buiding 1

Initial modelPDB ID:

6vcb

RefinementProtocol: FLEXIBLE FIT
Output model

PDB-7rbt:
cryo-EM structure of human Gastric inhibitory polypeptide receptor GIPR bound to tirzepatide

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