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- PDB-7rkx: Structure of US27-Gi-scFv16 in CL-state -

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Basic information

Entry
Database: PDB / ID: 7rkx
TitleStructure of US27-Gi-scFv16 in CL-state
Components
  • Antibody fragment scFv16
  • G-protein coupled receptor homolog US27
  • 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
KeywordsMEMBRANE PROTEIN / Viral GPCR / HCMV / cytomegalovirus / G protein complex
Function / homology
Function and homology information


C-C chemokine receptor activity / C-C chemokine binding / T cell migration / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin ...C-C chemokine receptor activity / C-C chemokine binding / T cell migration / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / 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 / cell chemotaxis / Regulation of insulin secretion / G protein-coupled receptor binding / calcium-mediated signaling / virion component / 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-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 / Glucagon signaling in metabolic regulation / response to peptide hormone / G beta:gamma signalling through CDC42 / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / 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 / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / 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 / GPER1 signaling / GDP binding / cellular response to prostaglandin E stimulus / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / 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 / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration / cell cortex / midbody / fibroblast proliferation / G alpha (i) signalling events / G alpha (s) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / immune response / G protein-coupled receptor signaling pathway / external side of plasma membrane / cell division / lysosomal membrane / GTPase activity / virus-mediated perturbation of host defense response / centrosome / synapse / protein-containing complex binding / nucleolus / GTP binding / host cell plasma membrane / magnesium ion binding / signal transduction / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol / cytoplasm
Similarity search - Function
: / G-protein alpha subunit, group I / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain ...: / G-protein alpha subunit, group I / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / 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 / 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
G-protein coupled receptor homolog US27 / 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
Similarity search - Component
Biological speciesHomo sapiens (human)
Mus musculus (house mouse)
Human cytomegalovirus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsTsutsumi, N. / Jude, K.M. / Garcia, K.C.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI125320 United States
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Sci Adv / Year: 2022
Title: Atypical structural snapshots of human cytomegalovirus GPCR interactions with host G proteins
Authors: Tsutsumi, N. / Maeda, S. / Qu, Q. / Voegele, M. / Jude, K.M. / Suomivuori, C.M. / Panova, O. / Waghray, D. / Kato, H.E. / Velasco, A. / Dror, R.O. / Skiniotis, G. / Kobilka, B.K. / Garcia, K.C.
History
DepositionJul 22, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 26, 2022Provider: repository / Type: Initial release
Revision 1.1Nov 13, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update

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Structure visualization

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Assembly

Deposited unit
A: Guanine nucleotide-binding protein G(i) subunit alpha-1
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
D: Antibody fragment scFv16
R: G-protein coupled receptor homolog US27


Theoretical massNumber of molelcules
Total (without water)157,2375
Polymers157,2375
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Guanine nucleotide-binding protein G(i) subunit alpha-1 / Adenylate cyclase-inhibiting G alpha protein


Mass: 40283.836 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P63096
#2: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 37728.152 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P62873
#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7432.554 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P59768
#4: Antibody Antibody fragment scFv16


Mass: 27340.482 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Trichoplusia ni (cabbage looper)
#5: Protein G-protein coupled receptor homolog US27 / HHRF2


Mass: 44451.742 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human cytomegalovirus / Gene: US27 / Production host: Homo sapiens (human) / References: UniProt: P09703
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1US27-Gi-scFv16 complexCOMPLEXall0MULTIPLE SOURCES
2Gi heterotrimerCOMPLEX#1-#31RECOMBINANT
3scFv16COMPLEX#41RECOMBINANT
4US27COMPLEX#51RECOMBINANT
Molecular weight
IDEntity assembly-IDValue (°)Experimental value
120.09 MDaNO
230.03 MDaNO
340.04 MDa
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-IDCellular location
12Homo sapiens (human)9606Membrane
23Mus musculus (house mouse)10090
34Human betaherpesvirus 510359
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Trichoplusia ni (cabbage looper)9606
23Trichoplusia ni (cabbage looper)7111
34Homo sapiens (human)9606
Buffer solutionpH: 7.2
Details: additives: 0.01 % w/v fluorinated octyl maltoside or 0.05 % w/v digitonin
Buffer component
IDConc.NameBuffer-ID
110 mMHepes-sodium salt1
2150 mMsodium chloride1
30.001 % w/vLauryl Maltose Neopentyl Glycol1
40.001 % w/vGlyco-diosgenin1
SpecimenConc.: 4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: 15 mA / Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 293 K / Details: 3 s blotting before plunging

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 105000 X / Calibrated magnification: 57624 X / Nominal defocus max: -2000 nm / Nominal defocus min: -800 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 73 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 3 / Num. of real images: 12233
Details: The data from the three grids were also used to reconstruct the OCL-state US27-Gi-scFv16 complex (7RKY).
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

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Processing

SoftwareName: PHENIX / Version: 1.19.2_4158: / Classification: refinement
EM software
IDNameVersionCategory
2SerialEMimage acquisition
4cryoSPARC3.1CTF correction
9PHENIXmodel refinement
11cryoSPARC3.1final Euler assignment
12cryoSPARC3.1classification
13cryoSPARC3.13D reconstruction
CTF correctionDetails: Final per-particle CTF values were determined by cryoSPARC Local CTF Refinement.
Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 12254340
Details: Including non-proteinous features. The actual number of intact complex particles was ~1,159,618.
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 268877
Details: The resolution estimate was inflated due to the better-defined G protein region compared to the receptor region.
Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0058739
ELECTRON MICROSCOPYf_angle_d0.70811870
ELECTRON MICROSCOPYf_dihedral_angle_d12.433020
ELECTRON MICROSCOPYf_chiral_restr0.0481356
ELECTRON MICROSCOPYf_plane_restr0.0061510

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