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- EMDB-80237: A complex of PTH1R/Gs bound to a PTHrP analogue with five beta-am... -

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Basic information

Entry
Database: EMDB / ID: EMD-80237
TitleA complex of PTH1R/Gs bound to a PTHrP analogue with five beta-amino acids
Map dataconsensus map (sharpened)
Sample
  • Complex: Complex containing PTH1R and Gs heterotrimer
    • Protein or peptide: 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: nanobody 35
    • Protein or peptide: Backbone-modified PTHrP analogue (P14, SPT)
    • Protein or peptide: Parathyroid hormone/parathyroid hormone-related peptide receptor
  • Ligand: water
KeywordsGPCR / g protein / agonist / parathyroid / MEMBRANE PROTEIN
Function / homology
Function and homology information


parathyroid hormone receptor activity / G protein-coupled peptide receptor activity / Class B/2 (Secretin family receptors) / osteoblast development / bone mineralization / positive regulation of inositol phosphate biosynthetic process / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway / adenylate cyclase-activating serotonin receptor signaling pathway / peptide hormone binding / regulation of skeletal muscle contraction ...parathyroid hormone receptor activity / G protein-coupled peptide receptor activity / Class B/2 (Secretin family receptors) / osteoblast development / bone mineralization / positive regulation of inositol phosphate biosynthetic process / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway / adenylate cyclase-activating serotonin receptor signaling pathway / peptide hormone binding / regulation of skeletal muscle contraction / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / chondrocyte differentiation / intracellular transport / bone resorption / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / D1 dopamine receptor binding / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / activation of adenylate cyclase activity / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / cellular response to acidic pH / cell maturation / cellular response to glucagon stimulus / intracellular glucose homeostasis / adenylate cyclase activator activity / positive regulation of insulin secretion involved in cellular response to glucose stimulus / trans-Golgi network membrane / skeletal system development / negative regulation of inflammatory response to antigenic stimulus / response to prostaglandin E / bone development / platelet aggregation / cognition / G protein-coupled receptor activity / G-protein beta/gamma-subunit complex binding / intracellular calcium ion homeostasis / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / positive regulation of insulin secretion / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / sensory perception of smell / Glucagon signaling in metabolic regulation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G beta:gamma signalling through BTK / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / positive regulation of cold-induced thermogenesis / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / adenylate cyclase-activating G protein-coupled receptor signaling pathway / retina development in camera-type eye / GTPase binding / fibroblast proliferation / G protein activity / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / in utero embryonic development / phospholipase C-activating G protein-coupled receptor signaling pathway / basolateral plasma membrane / G alpha (q) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / Ras protein signal transduction / cell surface receptor signaling pathway / signaling receptor complex / Extra-nuclear estrogen signaling / cell population proliferation
Similarity search - Function
GPCR, family 2, parathyroid hormone receptor / G-protein coupled receptors family 2 signature 1. / : / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / Hormone receptor domain / 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, parathyroid hormone receptor / G-protein coupled receptors family 2 signature 1. / : / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / Hormone receptor domain / 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 alpha subunit, group S / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-protein alpha subunit / G-alpha domain profile. / 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 / G protein beta WD-40 repeat protein / 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. / 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(s) subunit alpha isoforms short / Parathyroid hormone/parathyroid hormone-related peptide receptor
Similarity search - Component
Biological speciesHomo sapiens (human) / Lama glama (llama) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.21 Å
AuthorsCary BP / Wootten D / Sexton PM / Gellman SH / Wook TK / Shin J / Gerrard EJ
Funding support Australia, United States, 4 items
OrganizationGrant numberCountry
Australian Research Council (ARC)DE250101183 Australia
National Health and Medical Research Council (NHMRC, Australia)2025694 Australia
National Health and Medical Research Council (NHMRC, Australia)2026300 Australia
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM151985 United States
CitationJournal: J Am Chem Soc / Year: 2026
Title: Altered Intracellular Trafficking as a Mechanism for Prolonged Duration of G Protein-Coupled Receptor Activation.
Authors: Tae Wook Kim / Elliot J Gerrard / Jeeeun Shin / Thomas J Gardella / Denise Wootten / Patrick M Sexton / Brian P Cary / Samuel H Gellman /
Abstract: G protein-coupled receptors (GPCRs) mediate information transfer to cells from the surrounding environment. In most cases, signaling is initiated or amplified when the receptor binds to an agonist, ...G protein-coupled receptors (GPCRs) mediate information transfer to cells from the surrounding environment. In most cases, signaling is initiated or amplified when the receptor binds to an agonist, an event that alters the conformational profile of the receptor. Signal transduction results from interaction between the agonist-receptor complex and cytosolic partners such as G proteins, GPCR kinases (GRKs), and β-arrestins. Changes in agonist structure can lead to "signal bias", i.e., changes in the relative strength of signaling involving different partners. Some GPCRs, including those activated by long peptide hormones, continue to signal after internalization. In these cases, changes in agonist structure can lead to changes in the relative extent of signaling from different sites, e.g., cell surface vs endosomes ("location bias"). Many GPCRs are targets of approved drugs or drug candidates, and tuning signal bias and/or location bias is widely considered to be important for optimizing therapeutic profiles. Here we report another mechanism of modulating outcome via agonist modification: alteration of intracellular trafficking. The synthetic peptide agonist designated SPT, which contains five β-amino acid residues, was previously shown to activate the parathyroid hormone receptor-1 (PTH1R) and cause prolonged signaling in mice by an unknown mechanism. The SPT-PTH1R complex continues to stimulate cAMP production after internalization. We now find that the SPT-PTH1R complex impairs the sorting of early endosomes into recycling endosomes relative to the receptor complexed to the drug teriparatide. These findings suggest that altering intracellular GPCR trafficking patterns represents an unappreciated strategy for achieving prolonged action .
History
DepositionApr 10, 2026-
Header (metadata) releaseJun 3, 2026-
Map releaseJun 3, 2026-
UpdateJun 3, 2026-
Current statusJun 3, 2026Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_80237.png

Downloads & links

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Map

FileDownload / File: emd_80237.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationconsensus map (sharpened)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.88 Å/pix.
x 288 pix.
= 252.864 Å		0.88 Å/pix.
x 288 pix.
= 252.864 Å		0.88 Å/pix.
x 288 pix.
= 252.864 Å

Surface

Projections

Slices (1/3)

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Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.878 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.34
Minimum - Maximum-4.0312953 - 5.511938
Average (Standard dev.)-0.0023196703 (±0.105321154)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 252.86401 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_80237_msk_1.map
Projections & Slices
AxesZYX

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Additional map: consensus map (unsharpened)

Fileemd_80237_additional_1.map
Annotationconsensus map (unsharpened)
Projections & Slices
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Histogram

Histogram (log scale)

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Half map: half-map

Fileemd_80237_half_map_1.map
Annotationhalf-map
Projections & Slices
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Histogram

Histogram (log scale)

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Half map: half-map

Fileemd_80237_half_map_2.map
Annotationhalf-map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : Complex containing PTH1R and Gs heterotrimer

EntireName: Complex containing PTH1R and Gs heterotrimer
Components
  • Complex: Complex containing PTH1R and Gs heterotrimer
    • Protein or peptide: 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: nanobody 35
    • Protein or peptide: Backbone-modified PTHrP analogue (P14, SPT)
    • Protein or peptide: Parathyroid hormone/parathyroid hormone-related peptide receptor
  • Ligand: water

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Supramolecule #1: Complex containing PTH1R and Gs heterotrimer

SupramoleculeName: Complex containing PTH1R and Gs heterotrimer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 150 KDa

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Macromolecule #1: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

MacromoleculeName: 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: 45.699434 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE ...String:
MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE YQLIDCAQYF LDKIDVIKQA DYVPSDQDLL RCRVLTSGIF ETKFQVDKVN FHMFDVGAQR DERRKWIQCF ND VTAIIFV VASSSYNMVI REDNQTNRLQ AALKLFDSIW NNKWLRDTSV ILFLNKQDLL AEKVLAGKSK IEDYFPEFAR YTT PEDATP EPGEDPRVTR AKYFIRDEFL RISTASGDGR HYCYPHFTCS VDTENIRRVF NDCRDIIQRM HLRQYELL

UniProtKB: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

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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: 37.413863 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: QSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String:
QSELDQLRQE 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 KIWN

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: 6.375332 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
NTASIAQARK LVEQLKMEAN IDRIKVSKAA ADLMAYCEAH AKEDPLLTPV PASENPFR

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

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Macromolecule #4: nanobody 35

MacromoleculeName: nanobody 35 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 16.926076 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MKYLLPTAAA GLLLLAAQPA MAQVQLQESG GGLVQPGGSL RLSCAASGFT FSNYKMNWVR QAPGKGLEWV SDISQSGASI SYTGSVKGR FTISRDNAKN TLYLQMNSLK PEDTAVYYCA RCPAPFTRDC FDVTSTTYAY RGQGTQVTVS SHHHHHH

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Macromolecule #5: Backbone-modified PTHrP analogue (P14, SPT)

MacromoleculeName: Backbone-modified PTHrP analogue (P14, SPT) / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 4.266924 KDa
SequenceString:
(B3A)VSEIQ(A1MF6)LHD KGKSIQDLRR RFF(XCP)HHL(XCP)AE (XCP)HTAEI

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Macromolecule #6: Parathyroid hormone/parathyroid hormone-related peptide receptor

MacromoleculeName: Parathyroid hormone/parathyroid hormone-related peptide receptor
type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 69.513758 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MKTIIALSYI FCLVFADYKD DDDLEVLFQG PADDVMTKEE QIFLLHRAQA QCEKRLKEVL QRPASIMESD KGWTSASTSG KPRKDKASG KLYPESEEDK EAPTGSRYRG RPCLPEWDHI LCWPLGAPGE VVAVPCPDYI YDFNHKGHAY RRCDRNGSWE L VPGHNRTW ...String:
MKTIIALSYI FCLVFADYKD DDDLEVLFQG PADDVMTKEE QIFLLHRAQA QCEKRLKEVL QRPASIMESD KGWTSASTSG KPRKDKASG KLYPESEEDK EAPTGSRYRG RPCLPEWDHI LCWPLGAPGE VVAVPCPDYI YDFNHKGHAY RRCDRNGSWE L VPGHNRTW ANYSECVKFL TNETREREVF DRLGMIYTVG YSVSLASLTV AVLILAYFRR LHCTRNYIHM HLFLSFMLRA VS IFVKDAV LYSGATLDEA ERLTEEELRA IAQAPPPPAT AAAGYAGCRV AVTFFLYFLA TNYYWILVEG LYLHSLIFMA FFS EKKYLW GFTVFGWGLP AVFVAVWVSV RATLANTGCW DLSSGNKKWI IQVPILASIV LNFILFINIV RVLATKLRET NAGR CDTRQ QYRKLLKSTL VLMPLFGVHY IVFMATPYTE VSGTLWQVQM HYEMLFNSFQ GFFVAIIYCF CNGEVQAEIK KSWSR WTLA LDFKRKARSG SSSYSYGPMV SHTSVTNVGP RVGLGLPLSP RLLPTATTNG HPQLPGHAKP GTPALETLET TPPAMA APK DDGFLNGSCS GLDEEASGPE RPPALLQEEW ETVMPAGLEV LFQGPHHHHH HHH

UniProtKB: Parathyroid hormone/parathyroid hormone-related peptide receptor

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Macromolecule #7: water

MacromoleculeName: water / type: ligand / ID: 7 / Number of copies: 1 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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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

Concentration5.25 mg/mL
BufferpH: 7.4
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 96 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS GLACIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Number grids imaged: 1 / Number real images: 4887 / Average exposure time: 8.15 sec. / Average electron dose: 49.93 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.4000000000000001 µm / Nominal defocus min: 0.7000000000000001 µm
Sample stageCooling holder cryogen: NITROGEN

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Image processing

Particle selectionNumber selected: 2146791
CTF correctionSoftware - Name: CTFFIND (ver. 4.1.14) / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.21 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 4.1.2) / Number images used: 320200
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.1.2)
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. 4.1.2)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

8flr


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-25nv:
A complex of PTH1R/Gs bound to a PTHrP analogue with five beta-amino acids

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